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Oxygen toxicity - Wikipedia
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symptoms</span> </div> </a> <button aria-controls="toc-Signs_and_symptoms-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Signs and symptoms subsection</span> </button> <ul id="toc-Signs_and_symptoms-sublist" class="vector-toc-list"> <li id="toc-Central_nervous_system" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Central_nervous_system"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Central nervous system</span> </div> </a> <ul id="toc-Central_nervous_system-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lungs" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Lungs"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Lungs</span> </div> </a> <ul id="toc-Lungs-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Eyes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Eyes"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Eyes</span> </div> </a> <ul id="toc-Eyes-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Causes" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Causes"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Causes</span> </div> </a> <button aria-controls="toc-Causes-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Causes subsection</span> </button> <ul id="toc-Causes-sublist" class="vector-toc-list"> <li id="toc-Central_nervous_system_toxicity" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Central_nervous_system_toxicity"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>Central nervous system toxicity</span> </div> </a> <ul id="toc-Central_nervous_system_toxicity-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lung_toxicity" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Lung_toxicity"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>Lung toxicity</span> </div> </a> <ul id="toc-Lung_toxicity-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ocular_toxicity" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Ocular_toxicity"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>Ocular toxicity</span> </div> </a> <ul id="toc-Ocular_toxicity-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Mechanism" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Mechanism"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Mechanism</span> </div> </a> <ul id="toc-Mechanism-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Diagnosis" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Diagnosis"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Diagnosis</span> </div> </a> <button aria-controls="toc-Diagnosis-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Diagnosis subsection</span> </button> <ul id="toc-Diagnosis-sublist" class="vector-toc-list"> <li id="toc-Differential_diagnosis" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Differential_diagnosis"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Differential diagnosis</span> </div> </a> <ul id="toc-Differential_diagnosis-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Prevention" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Prevention"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Prevention</span> </div> </a> <button aria-controls="toc-Prevention-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Prevention subsection</span> </button> <ul id="toc-Prevention-sublist" class="vector-toc-list"> <li id="toc-Underwater" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Underwater"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.1</span> <span>Underwater</span> </div> </a> <ul id="toc-Underwater-sublist" class="vector-toc-list"> <li id="toc-Screening" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Screening"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.1.1</span> <span>Screening</span> </div> </a> <ul id="toc-Screening-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Hyperbaric_setting" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hyperbaric_setting"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.2</span> <span>Hyperbaric setting</span> </div> </a> <ul id="toc-Hyperbaric_setting-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Normobaric_setting" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Normobaric_setting"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.3</span> <span>Normobaric setting</span> </div> </a> <ul id="toc-Normobaric_setting-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Hypobaric_setting" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Hypobaric_setting"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.4</span> <span>Hypobaric setting</span> </div> </a> <ul id="toc-Hypobaric_setting-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Management" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Management"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Management</span> </div> </a> <button aria-controls="toc-Management-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Management subsection</span> </button> <ul id="toc-Management-sublist" class="vector-toc-list"> <li id="toc-Repetitive_exposure" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Repetitive_exposure"> <div class="vector-toc-text"> <span class="vector-toc-numb">7.1</span> <span>Repetitive exposure</span> </div> </a> <ul id="toc-Repetitive_exposure-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Prognosis" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Prognosis"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Prognosis</span> </div> </a> <ul id="toc-Prognosis-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Epidemiology" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Epidemiology"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Epidemiology</span> </div> </a> <ul id="toc-Epidemiology-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Society_and_culture" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Society_and_culture"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>Society and culture</span> </div> </a> <ul id="toc-Society_and_culture-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sources" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Sources"> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>Sources</span> </div> </a> <ul id="toc-Sources-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Further_reading" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Further_reading"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>Further reading</span> </div> </a> <ul id="toc-Further_reading-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Oxygen toxicity</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 27 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-27" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">27 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%B3%D9%85%D9%85_%D8%A8%D8%A7%D9%84%D8%A3%D9%83%D8%B3%D8%AC%D9%8A%D9%86" title="تسمم بالأكسجين – Arabic" lang="ar" hreflang="ar" data-title="تسمم بالأكسجين" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%85%E0%A6%95%E0%A7%8D%E0%A6%B8%E0%A6%BF%E0%A6%9C%E0%A7%87%E0%A6%A8_%E0%A6%AC%E0%A6%BF%E0%A6%B7%E0%A6%BE%E0%A6%95%E0%A7%8D%E0%A6%A4%E0%A6%A4%E0%A6%BE" title="অক্সিজেন বিষাক্ততা – Bangla" lang="bn" hreflang="bn" data-title="অক্সিজেন বিষাক্ততা" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Efecte_de_Paul_Bert" title="Efecte de Paul Bert – Catalan" lang="ca" hreflang="ca" data-title="Efecte de Paul Bert" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Iltforgiftning" title="Iltforgiftning – Danish" lang="da" hreflang="da" data-title="Iltforgiftning" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Sauerstofftoxikose" title="Sauerstofftoxikose – German" lang="de" hreflang="de" data-title="Sauerstofftoxikose" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Hapniku_toksilisus" title="Hapniku toksilisus – Estonian" lang="et" hreflang="et" data-title="Hapniku toksilisus" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Efecto_de_Paul_Bert" title="Efecto de Paul Bert – Spanish" lang="es" hreflang="es" data-title="Efecto de Paul Bert" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%B3%D9%85%D9%88%D9%85%DB%8C%D8%AA_%D8%A8%D8%A7_%D8%A7%DA%A9%D8%B3%DB%8C%DA%98%D9%86" title="مسمومیت با اکسیژن – Persian" lang="fa" hreflang="fa" data-title="مسمومیت با اکسیژن" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Toxicit%C3%A9_de_l%27oxyg%C3%A8ne" title="Toxicité de l'oxygène – French" lang="fr" hreflang="fr" data-title="Toxicité de l'oxygène" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%82%B0%EC%86%8C_%EC%A4%91%EB%8F%85" title="산소 중독 – Korean" lang="ko" hreflang="ko" data-title="산소 중독" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Toksisitas_oksigen" title="Toksisitas oksigen – Indonesian" lang="id" hreflang="id" data-title="Toksisitas oksigen" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Tossicit%C3%A0_dell%27ossigeno" title="Tossicità dell'ossigeno – Italian" lang="it" hreflang="it" data-title="Tossicità dell'ossigeno" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%A8%D7%A2%D7%9C%D7%AA_%D7%97%D7%9E%D7%A6%D7%9F" title="הרעלת חמצן – Hebrew" lang="he" hreflang="he" data-title="הרעלת חמצן" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Apsinuodijimas_deguonimi" title="Apsinuodijimas deguonimi – Lithuanian" lang="lt" hreflang="lt" data-title="Apsinuodijimas deguonimi" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Ketoksikan_oksigen" title="Ketoksikan oksigen – Malay" lang="ms" hreflang="ms" data-title="Ketoksikan oksigen" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Zuurstofvergiftiging" title="Zuurstofvergiftiging – Dutch" lang="nl" hreflang="nl" data-title="Zuurstofvergiftiging" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%85%B8%E7%B4%A0%E4%B8%AD%E6%AF%92" title="酸素中毒 – Japanese" lang="ja" hreflang="ja" data-title="酸素中毒" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Zatrucie_tlenowe" title="Zatrucie tlenowe – Polish" lang="pl" hreflang="pl" data-title="Zatrucie tlenowe" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Efeito_Paul_Bert" title="Efeito Paul Bert – Portuguese" lang="pt" hreflang="pt" data-title="Efeito Paul Bert" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D0%B8%D1%81%D0%BB%D0%BE%D1%80%D0%BE%D0%B4%D0%BD%D0%BE%D0%B5_%D0%BE%D1%82%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5" title="Кислородное отравление – Russian" lang="ru" hreflang="ru" data-title="Кислородное отравление" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A2%D1%80%D0%BE%D0%B2%D0%B0%D1%9A%D0%B5_%D0%BA%D0%B8%D1%81%D0%B5%D0%BE%D0%BD%D0%B8%D0%BA%D0%BE%D0%BC" title="Тровање кисеоником – Serbian" lang="sr" hreflang="sr" data-title="Тровање кисеоником" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Trovanje_kiseonikom" title="Trovanje kiseonikom – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Trovanje kiseonikom" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Syrgasf%C3%B6rgiftning" title="Syrgasförgiftning – Swedish" lang="sv" hreflang="sv" data-title="Syrgasförgiftning" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B9%80%E0%B8%9B%E0%B9%87%E0%B8%99%E0%B8%9E%E0%B8%B4%E0%B8%A9%E0%B8%88%E0%B8%B2%E0%B8%81%E0%B8%AD%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B4%E0%B9%80%E0%B8%88%E0%B8%99" title="การเป็นพิษจากออกซิเจน – Thai" lang="th" hreflang="th" data-title="การเป็นพิษจากออกซิเจน" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Oksijen_zehirlenmesi" title="Oksijen zehirlenmesi – Turkish" lang="tr" hreflang="tr" data-title="Oksijen zehirlenmesi" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li 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Click here for more information."><img alt="Featured article" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/20px-Cscr-featured.svg.png" decoding="async" width="20" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/30px-Cscr-featured.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/40px-Cscr-featured.svg.png 2x" data-file-width="466" data-file-height="443" /></a></span></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Toxic effects of breathing oxygen at high partial pressures</div> <p class="mw-empty-elt"> </p> <div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Medical condition</div><style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox ib-medical-condition"><tbody><tr><th colspan="2" class="infobox-above" style="background:#ccc">Oxygen toxicity</th></tr><tr><th scope="row" class="infobox-label">Other names</th><td class="infobox-data">Oxygen toxicity syndrome, oxygen intoxication, oxygen poisoning</td></tr><tr style="background-color: #f8f9fa;"><td colspan="2" class="infobox-full-data"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:File-Oxygen_toxicity_testing.jpeg" class="mw-file-description"><img alt="Three men inside a pressure chamber. One is breathing from a mask and the other two are timing and taking notes." src="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/File-Oxygen_toxicity_testing.jpeg/220px-File-Oxygen_toxicity_testing.jpeg" decoding="async" width="220" height="191" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/82/File-Oxygen_toxicity_testing.jpeg/330px-File-Oxygen_toxicity_testing.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/82/File-Oxygen_toxicity_testing.jpeg/440px-File-Oxygen_toxicity_testing.jpeg 2x" data-file-width="888" data-file-height="771" /></a></span></td></tr><tr><td colspan="2" class="infobox-full-data">In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7 <a href="/wiki/Bar_(unit)" title="Bar (unit)">bar</a>. The subject in the centre is breathing 100% oxygen from a mask.<sup id="cite_ref-FOOTNOTEDonald,_Part_I1947_1-0" class="reference"><a href="#cite_note-FOOTNOTEDonald,_Part_I1947-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Medical_specialty" title="Medical specialty">Specialty</a></th><td class="infobox-data"><a href="/wiki/Diving_medicine" title="Diving medicine">Diving medicine</a>, <a href="/wiki/Hyperbaric_medicine" title="Hyperbaric medicine">hyperbaric medicine</a>, <a href="/wiki/Neonatal_medicine" class="mw-redirect" title="Neonatal medicine">neonatal medicine</a>.</td></tr></tbody></table> <p><b>Oxygen toxicity</b> is a condition resulting from the harmful effects of breathing molecular <a href="/wiki/Oxygen" title="Oxygen">oxygen</a> (<span class="chemf nowrap">O<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline"></sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">2</sub></span></span></span>) at increased <a href="/wiki/Partial_pressure" title="Partial pressure">partial pressures</a>. Severe cases can result in <a href="/wiki/Cell_damage" title="Cell damage">cell damage</a> and death, with effects most often seen in the central nervous system, <a href="/wiki/Lung" title="Lung">lungs</a>, and eyes. Historically, the <a href="/wiki/Central_nervous_system" title="Central nervous system">central nervous system</a> condition was called the <a href="/wiki/Paul_Bert" title="Paul Bert">Paul Bert</a> effect, and the pulmonary condition the <a href="/wiki/James_Lorrain_Smith" title="James Lorrain Smith">Lorrain Smith</a> effect, after the researchers who pioneered the discoveries and descriptions in the late 19th century. Oxygen toxicity is a concern for <a href="/wiki/Underwater_diving" title="Underwater diving">underwater divers</a>, those on high concentrations of supplemental oxygen, and those undergoing <a href="/wiki/Hyperbaric_oxygen_therapy" class="mw-redirect" title="Hyperbaric oxygen therapy">hyperbaric oxygen therapy</a>. </p><p>The result of breathing increased partial pressures of oxygen is <a href="/wiki/Hyperoxia" title="Hyperoxia">hyperoxia</a>, an excess of oxygen in body tissues. The body is affected in different ways depending on the type of exposure. Central nervous system toxicity is caused by short exposure to high partial pressures of oxygen at greater than atmospheric pressure. Pulmonary and ocular toxicity result from longer exposure to increased oxygen levels at normal pressure. Symptoms may include disorientation, breathing problems, and vision changes such as <a href="/wiki/Myopia" title="Myopia">myopia</a>. Prolonged exposure to above-normal oxygen partial pressures, or shorter exposures to very high partial pressures, can cause <a href="/wiki/Oxidative_damage" class="mw-redirect" title="Oxidative damage">oxidative damage</a> to <a href="/wiki/Cell_membranes" class="mw-redirect" title="Cell membranes">cell membranes</a>, collapse of the <a href="/wiki/Pulmonary_alveolus" title="Pulmonary alveolus">alveoli</a> in the lungs, <a href="/wiki/Retinal_detachment" title="Retinal detachment">retinal detachment</a>, and <a href="/wiki/Seizures" class="mw-redirect" title="Seizures">seizures</a>. Oxygen toxicity is managed by reducing the exposure to increased oxygen levels. Studies show that, in the long term, a robust recovery from most types of oxygen toxicity is possible. </p><p><a href="/wiki/Medical_guideline" title="Medical guideline">Protocols</a> for avoidance of the effects of hyperoxia exist in fields where oxygen is breathed at higher-than-normal partial pressures, including <a href="/wiki/Underwater_diving" title="Underwater diving">underwater diving</a> using compressed <a href="/wiki/Breathing_gases" class="mw-redirect" title="Breathing gases">breathing gases</a>, hyperbaric medicine, <a href="/wiki/Neonatal_care" class="mw-redirect" title="Neonatal care">neonatal care</a> and <a href="/wiki/Human_spaceflight" title="Human spaceflight">human spaceflight</a>. These protocols have resulted in the increasing rarity of seizures due to oxygen toxicity, with pulmonary and ocular damage being largely confined to the problems of managing premature infants. </p><p>In recent years, oxygen has become available for recreational use in <a href="/wiki/Oxygen_bar" title="Oxygen bar">oxygen bars</a>. The <a href="/wiki/US_Food_and_Drug_Administration" class="mw-redirect" title="US Food and Drug Administration">US Food and Drug Administration</a> has warned those who have conditions such as heart or lung disease not to use oxygen bars. Scuba divers use breathing gases containing up to 100% oxygen, and should have specific training in using such gases. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Classification">Classification</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=1" title="Edit section: Classification"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/File:Clark1974.png" class="mw-file-description" title="Breathing air with high oxygen pressure can lead to several adverse effects."><img alt="The effects of high inspired oxygen pressure: (1) chemical toxicity, pulmonary damage, hypoxemia; (2) retinal damage, erythrocyte hemolysis, liver damage, heart damage, endocrine effects, kidney damage, destruction of any cell; (3) toxic effects on central nervous system, twitching, convulsions, death." src="//upload.wikimedia.org/wikipedia/en/2/25/Clark1974.png" decoding="async" width="700" height="252" class="mw-file-element" data-file-width="700" data-file-height="252" /></a><figcaption>Breathing air with high oxygen pressure can lead to several adverse effects.</figcaption></figure> <p>The effects of oxygen toxicity may be classified by the organs affected, producing three principal forms:<sup id="cite_ref-FOOTNOTEClarkThom2003358–60_2-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003358–60-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Acott_3-0" class="reference"><a href="#cite_note-Acott-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid14232720_4-0" class="reference"><a href="#cite_note-pmid14232720-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <ul><li>Central nervous system, characterised by <a href="/wiki/Seizure" title="Seizure">convulsions</a> followed by unconsciousness, occurring under hyperbaric conditions;</li> <li>Pulmonary (lungs), characterised by difficulty in breathing and pain within the chest, occurring when breathing increased pressures of oxygen for extended periods;</li> <li>Ocular (<a href="/wiki/Retinopathy" title="Retinopathy">retinopathic conditions</a>), characterised by alterations to the eyes, occurring when breathing increased pressures of oxygen for extended periods.</li></ul> <p>Central nervous system oxygen toxicity can cause seizures, brief periods of rigidity followed by convulsions and unconsciousness, and is of concern to divers who encounter greater than atmospheric pressures. Pulmonary oxygen toxicity results in damage to the lungs, causing pain and difficulty in breathing.<sup id="cite_ref-FOOTNOTEClarkThom2003358–60_2-1" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003358–60-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Oxidative damage to the eye may lead to myopia or partial detachment of the <a href="/wiki/Retina" title="Retina">retina</a>. Pulmonary and ocular damage are most likely to occur when supplemental oxygen is administered as part of a treatment, particularly to newborn infants, but are also a concern during hyperbaric oxygen therapy.<sup id="cite_ref-Best_5-0" class="reference"><a href="#cite_note-Best-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Bennett_and_Cooper_2022_6-0" class="reference"><a href="#cite_note-Bennett_and_Cooper_2022-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>Oxidative damage may occur in any cell in the body but the effects on the three most susceptible organs will be the primary concern. It may also be implicated in damage to red blood cells (<a href="/wiki/Haemolysis" class="mw-redirect" title="Haemolysis">haemolysis</a>),<sup id="cite_ref-pmid5782651_7-0" class="reference"><a href="#cite_note-pmid5782651-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid4403030_8-0" class="reference"><a href="#cite_note-pmid4403030-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> the <a href="/wiki/Liver" title="Liver">liver</a>,<sup id="cite_ref-pmid5885427_9-0" class="reference"><a href="#cite_note-pmid5885427-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Cardiac_muscle" title="Cardiac muscle">heart</a>,<sup id="cite_ref-pmid5046798_10-0" class="reference"><a href="#cite_note-pmid5046798-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Endocrine_gland" title="Endocrine gland">endocrine glands</a> (<a href="/wiki/Adrenal_gland" title="Adrenal gland">adrenal glands</a>, <a href="/wiki/Gonad" title="Gonad">gonads</a>, and <a href="/wiki/Thyroid" title="Thyroid">thyroid</a>),<sup id="cite_ref-pmid13228600_11-0" class="reference"><a href="#cite_note-pmid13228600-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid13889254_12-0" class="reference"><a href="#cite_note-pmid13889254-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Gersh_13-0" class="reference"><a href="#cite_note-Gersh-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> or <a href="/wiki/Kidney" title="Kidney">kidneys</a>,<sup id="cite_ref-pmid5155150_14-0" class="reference"><a href="#cite_note-pmid5155150-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> and general damage to <a href="/wiki/Cell_(biology)" title="Cell (biology)">cells</a>.<sup id="cite_ref-FOOTNOTEClarkThom2003358–60_2-2" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003358–60-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid4613232_15-0" class="reference"><a href="#cite_note-pmid4613232-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p><p>In unusual circumstances, effects on other tissues may be observed: it is suspected that during spaceflight, high oxygen concentrations may contribute to bone damage.<sup id="cite_ref-Patel_16-0" class="reference"><a href="#cite_note-Patel-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Hyperoxia can also indirectly cause <a href="/wiki/CO2_retention" class="mw-redirect" title="CO2 retention">carbon dioxide narcosis</a> in patients with lung ailments such as <a href="/wiki/Chronic_obstructive_pulmonary_disease" title="Chronic obstructive pulmonary disease">chronic obstructive pulmonary disease</a> or with central respiratory depression.<sup id="cite_ref-Patel_16-1" class="reference"><a href="#cite_note-Patel-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Hyperventilation" title="Hyperventilation">Hyperventilation</a> of atmospheric air at atmospheric pressures does not cause oxygen toxicity, because sea-level air has a partial pressure of oxygen of 0.21 bar (21 kPa) whereas toxicity does not occur below 0.3 bar (30 kPa).<sup id="cite_ref-FOOTNOTEClarkLambertsen1970159_17-0" class="reference"><a href="#cite_note-FOOTNOTEClarkLambertsen1970159-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Signs_and_symptoms">Signs and symptoms</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=2" title="Edit section: Signs and symptoms"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable" style="float: right; margin-left: 1em; margin-right: 0em;"> <caption>Oxygen poisoning at 90 feet (27 m) in the dry in 36 subjects in order of performance<sup id="cite_ref-FOOTNOTEDonald,_Part_I1947_1-1" class="reference"><a href="#cite_note-FOOTNOTEDonald,_Part_I1947-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th width="60">Exposure (mins.) </th> <th width="50">Num. of subjects </th> <th width="190">Symptoms </th></tr> <tr> <td align="center">96 </td> <td align="center">1 </td> <td>Prolonged dazzle; severe spasmodic vomiting </td></tr> <tr> <td align="center">60–69 </td> <td align="center">3 </td> <td>Severe lip-twitching; euphoria; nausea and vertigo; arm twitch </td></tr> <tr> <td align="center">50–55 </td> <td align="center">4 </td> <td>Severe lip-twitching; dazzle; blubbering of lips; fell asleep; dazed </td></tr> <tr> <td align="center">31–35 </td> <td align="center">4 </td> <td>Nausea, vertigo, lip-twitching; convulsed </td></tr> <tr> <td align="center">21–30 </td> <td align="center">6 </td> <td>Convulsed; drowsiness; severe lip-twitching; epigastric aura; twitch L arm; amnesia </td></tr> <tr> <td align="center">16–20 </td> <td align="center">8 </td> <td>Convulsed; vertigo and severe lip twitching; epigastric aura; spasmodic respiration; </td></tr> <tr> <td align="center">11–15 </td> <td align="center">4 </td> <td>Inspiratory predominance; lip-twitching and syncope; nausea and confusion </td></tr> <tr> <td align="center">6–10 </td> <td align="center">6 </td> <td>Dazed and lip-twitching; paraesthesiae; vertigo; "Diaphragmatic spasm"; severe nausea </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Central_nervous_system">Central nervous system</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=3" title="Edit section: Central nervous system"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Central_nervous_system" title="Central nervous system">Central nervous system</a> oxygen toxicity manifests as symptoms such as visual changes (especially <a href="/wiki/Tunnel_vision" title="Tunnel vision">tunnel vision</a>), ringing in the ears (<a href="/wiki/Tinnitus" title="Tinnitus">tinnitus</a>), <a href="/wiki/Nausea" title="Nausea">nausea</a>, twitching (especially of the face), behavioural changes (irritability, <a href="/wiki/Anxiety" title="Anxiety">anxiety</a>, confusion), and <a href="/wiki/Vertigo_(medical)" class="mw-redirect" title="Vertigo (medical)">dizziness</a>. This may be followed by a <a href="/wiki/Tonic%E2%80%93clonic_seizure" class="mw-redirect" title="Tonic–clonic seizure">tonic–clonic seizure</a> consisting of two phases: intense muscle contraction occurs for several seconds (tonic phase); followed by rapid spasms of alternate muscle relaxation and contraction producing convulsive jerking (<a href="/wiki/Clonus" title="Clonus">clonic</a> phase). The seizure ends with a period of unconsciousness (the <a href="/wiki/Postictal_state" title="Postictal state">postictal state</a>).<sup id="cite_ref-FOOTNOTEClarkThom2003376_18-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003376-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3_19-0" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> The onset of seizure depends upon the partial pressure of oxygen in the <a href="/wiki/Breathing_gas" title="Breathing gas">breathing gas</a> and exposure duration. However, exposure time before onset is unpredictable, as tests have shown a wide variation, both amongst individuals, and in the same individual from day to day.<sup id="cite_ref-FOOTNOTEClarkThom2003376_18-1" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003376-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201122vol._4,_ch._18_20-0" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201122vol._4,_ch._18-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Bitterman_21-0" class="reference"><a href="#cite_note-Bitterman-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> In addition, many external factors, such as underwater immersion, exposure to cold, and exercise will decrease the time to onset of central nervous system symptoms.<sup id="cite_ref-FOOTNOTEDonald,_Part_I1947_1-2" class="reference"><a href="#cite_note-FOOTNOTEDonald,_Part_I1947-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Decrease of tolerance is closely linked to retention of <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a>.<sup id="cite_ref-FOOTNOTELang200182_22-0" class="reference"><a href="#cite_note-FOOTNOTELang200182-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-rebreather2.0_23-0" class="reference"><a href="#cite_note-rebreather2.0-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-padi_24-0" class="reference"><a href="#cite_note-padi-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> Other factors, such as darkness and <a href="/wiki/Caffeine" title="Caffeine">caffeine</a>, increase tolerance in test animals, but these effects have not been proven in humans.<sup id="cite_ref-pmid3705247_25-0" class="reference"><a href="#cite_note-pmid3705247-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid8574677_26-0" class="reference"><a href="#cite_note-pmid8574677-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Lungs">Lungs</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=4" title="Edit section: Lungs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Exposure to oxygen pressures greater than 0.5 bar, such as during diving, oxygen prebreathing prior to flight, or hyperbaric therapy is associated with the onset of pulmonary toxicity symptoms.<sup id="cite_ref-Loveman_2017_27-0" class="reference"><a href="#cite_note-Loveman_2017-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> Pulmonary toxicity symptoms result from an inflammation that starts in the airways leading to the lungs and then spreads into the lungs (<a href="/wiki/Tracheobronchial_tree" class="mw-redirect" title="Tracheobronchial tree">tracheobronchial tree</a>). The symptoms appear in the upper chest region (<a href="/wiki/Human_sternum" class="mw-redirect" title="Human sternum">substernal</a> and <a href="/wiki/Carina_of_trachea" title="Carina of trachea">carinal</a> regions).<sup id="cite_ref-FOOTNOTEClarkThom2003383_28-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003383-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid4948324_29-0" class="reference"><a href="#cite_note-pmid4948324-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid4929472_30-0" class="reference"><a href="#cite_note-pmid4929472-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> This begins as a mild tickle on inhalation and progresses to frequent coughing.<sup id="cite_ref-FOOTNOTEClarkThom2003383_28-1" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003383-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> If breathing increased partial pressures of oxygen continues, subjects experience a mild burning on inhalation along with uncontrollable coughing and occasional shortness of breath (<a href="/wiki/Dyspnea" class="mw-redirect" title="Dyspnea">dyspnea</a>).<sup id="cite_ref-FOOTNOTEClarkThom2003383_28-2" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003383-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> Physical findings related to pulmonary toxicity have included bubbling sounds heard through a <a href="/wiki/Stethoscope" title="Stethoscope">stethoscope</a> (bubbling <a href="/wiki/Rales" class="mw-redirect" title="Rales">rales</a>), fever, and increased blood flow to the lining of the nose (<a href="/wiki/Hyperaemia" title="Hyperaemia">hyperaemia</a> of the nasal <a href="/wiki/Mucosa" class="mw-redirect" title="Mucosa">mucosa</a>).<sup id="cite_ref-pmid4929472_30-1" class="reference"><a href="#cite_note-pmid4929472-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> Initially, there is an exudative phase that results in <a href="/wiki/Pulmonary_edema" title="Pulmonary edema">Pulmonary edema</a>. An increase in the width of the interstitial space may be seen in histological examination.<sup id="cite_ref-Loveman_2017_27-1" class="reference"><a href="#cite_note-Loveman_2017-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> X-rays of the lungs show little change in the short term, but extended exposure leads to increasing diffuse shadowing throughout both lungs.<sup id="cite_ref-FOOTNOTEClarkThom2003383_28-3" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003383-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Spirometry" title="Spirometry">Pulmonary function measurements</a> are reduced, as indicated by a reduction in the amount of air that the lungs can hold (<a href="/wiki/Vital_capacity" title="Vital capacity">vital capacity</a>) and changes in expiratory function and lung elasticity.<sup id="cite_ref-pmid4929472_30-2" class="reference"><a href="#cite_note-pmid4929472-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEClarkThom2003386–87_31-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003386–87-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> Lung diffusing capacity decreases leading eventually to hypoxaemia.<sup id="cite_ref-Loveman_2017_27-2" class="reference"><a href="#cite_note-Loveman_2017-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> Tests in animals have indicated a variation in tolerance similar to that found in central nervous system toxicity, as well as significant variations between species. When the exposure to oxygen above 0.5 bar (50 kPa) is intermittent, it permits the lungs to recover and delays the onset of toxicity.<sup id="cite_ref-Smith_32-0" class="reference"><a href="#cite_note-Smith-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> A similar progression is common to all mammalian species.<sup id="cite_ref-Loveman_2017_27-3" class="reference"><a href="#cite_note-Loveman_2017-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> If death from hypoxaemia has not occurred after exposure for several days a proliferative phase occurs, developing a chronic thickening of the alveolar membrane and a decrement in lung diffusing capacity. These changes are mostly reversible on return to normoxia, but the time required for complete recovery is not known.<sup id="cite_ref-Loveman_2017_27-4" class="reference"><a href="#cite_note-Loveman_2017-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Eyes">Eyes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=5" title="Edit section: Eyes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In premature babies, signs of damage to the eye (<a href="/wiki/Retinopathy_of_prematurity" title="Retinopathy of prematurity">retinopathy of prematurity</a>, or ROP) are observed via an <a href="/wiki/Ophthalmoscope" class="mw-redirect" title="Ophthalmoscope">ophthalmoscope</a> as a demarcation between the <a href="https://en.wiktionary.org/wiki/vascularize" class="extiw" title="wikt:vascularize">vascularised</a> and non-vascularised regions of an infant's retina. The degree of this demarcation is used to designate four stages: (I) the demarcation is a line; (II) the demarcation becomes a ridge; (III) growth of new blood vessels occurs around the ridge; (IV) the retina begins to detach from the inner wall of the eye (<a href="/wiki/Choroid" title="Choroid">choroid</a>).<sup id="cite_ref-Best_5-1" class="reference"><a href="#cite_note-Best-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Causes">Causes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=6" title="Edit section: Causes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Oxygen toxicity is caused by hyperoxia, exposure to oxygen at partial pressures greater than those to which the body is normally exposed. This occurs in three principal settings: underwater diving,<sup id="cite_ref-NOAA_Diving_Manual_2001_33-0" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> hyperbaric oxygen therapy,<sup id="cite_ref-smerz_34-0" class="reference"><a href="#cite_note-smerz-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> and the provision of supplemental oxygen, in critical care,<sup id="cite_ref-Hochberg_et_al_2021_35-0" class="reference"><a href="#cite_note-Hochberg_et_al_2021-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> and for long-term treatment of chronic disorders, and particularly to premature infants.<sup id="cite_ref-Gilbert_36-0" class="reference"><a href="#cite_note-Gilbert-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> In each case, the <a href="/wiki/Risk_factors" class="mw-redirect" title="Risk factors">risk factors</a> are markedly different.<sup id="cite_ref-NOAA_Diving_Manual_2001_33-1" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-smerz_34-1" class="reference"><a href="#cite_note-smerz-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Gilbert_36-1" class="reference"><a href="#cite_note-Gilbert-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </p><p>Under normal or reduced ambient pressures, the effects of hyperoxia are initially restricted to the lungs, which are directly exposed, but after prolonged exposure or at hyperbaric pressures, other organs can be at risk. At normal partial pressures of inhaled oxygen, most of the oxygen transported in the blood is carried by haemoglobin, but the amount of dissolved oxygen will increase at partial pressures of arterial oxygen exceeding 100 millimetres of mercury (0.13 bar), when oxyhemoglobin saturation is nearly complete. At higher concentrations the effects of hyperoxia are more widespread in the body tissues beyond the lungs.<sup id="cite_ref-Helmerhorst_et_al_2015_37-0" class="reference"><a href="#cite_note-Helmerhorst_et_al_2015-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Central_nervous_system_toxicity">Central nervous system toxicity</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=7" title="Edit section: Central nervous system toxicity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Technical_diving" title="Technical diving">Technical diving</a></div> <p>Exposures, from minutes to a few hours, to partial pressures of oxygen above about 1.6 <a href="/wiki/Bar_(unit)" title="Bar (unit)">bars</a> (160 <a href="/wiki/Pascal_(unit)" title="Pascal (unit)">kPa</a>)—about eight times normal atmospheric partial pressure—are usually associated with central nervous system oxygen toxicity and are most likely to occur among patients undergoing hyperbaric oxygen therapy and divers. Since sea level atmospheric pressure is about 1 bar (100 kPa), central nervous system toxicity can only occur under <a href="/wiki/Hyperbaric" class="mw-redirect" title="Hyperbaric">hyperbaric</a> conditions, where <a href="/wiki/Ambient_pressure" title="Ambient pressure">ambient pressure</a> is above normal.<sup id="cite_ref-smerz_34-2" class="reference"><a href="#cite_note-smerz-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-hampson215-9_38-0" class="reference"><a href="#cite_note-hampson215-9-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> Divers breathing air at depths beyond 60 m (200 ft) face an increasing risk of an oxygen toxicity "hit" (seizure). Divers breathing a gas mixture enriched with oxygen, such as <a href="/wiki/Nitrox" title="Nitrox">nitrox</a>, similarly increase the risk of a seizure at shallower depths, should they descend below the <a href="/wiki/Maximum_operating_depth" title="Maximum operating depth">maximum operating depth</a> accepted for the mixture.<sup id="cite_ref-FOOTNOTELang20017_39-0" class="reference"><a href="#cite_note-FOOTNOTELang20017-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> CNS toxicity is aggravated by a high partial pressure of carbon dioxide, stress, fatigue and cold, all of which are much more likely in diving than in hyperbaric therapy.<sup id="cite_ref-Cooper_et_al_2022_40-0" class="reference"><a href="#cite_note-Cooper_et_al_2022-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Lung_toxicity">Lung toxicity</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=8" title="Edit section: Lung toxicity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pulmonary_toxicity_tolerance_curves.svg" class="mw-file-description"><img alt="A graph of pulmonary toxicity tolerance curves. The X axis is labelled "Duration of oxygen breathing (hours)", and ranges from 0 to 30 hours. The Y axis is labelled "Inspired oxygen partial pressure (bars)", and ranges from 0.0 to 5.0 bars. The chart shows three curves at -2%, -8% and -20% lung capacity, starting at 5.0 bars of pressure and decreasing to between 0.5 and just under 1.5 bars, and displays a heightened decrease in lung capacity related to an increase in duration." src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Pulmonary_toxicity_tolerance_curves.svg/400px-Pulmonary_toxicity_tolerance_curves.svg.png" decoding="async" width="400" height="299" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Pulmonary_toxicity_tolerance_curves.svg/600px-Pulmonary_toxicity_tolerance_curves.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Pulmonary_toxicity_tolerance_curves.svg/800px-Pulmonary_toxicity_tolerance_curves.svg.png 2x" data-file-width="697" data-file-height="521" /></a><figcaption>The curves show typical decrement in lung vital capacity when breathing oxygen. Lambertsen concluded in 1987 that 0.5 bar (50 kPa) could be tolerated indefinitely.</figcaption></figure> <p>The lungs and the remainder of the <a href="/wiki/Respiratory_tract" title="Respiratory tract">respiratory tract</a> are exposed to the highest concentration of oxygen in the human body and are therefore the first organs to show toxicity. Pulmonary toxicity occurs only with exposure to partial pressures of oxygen greater than 0.5 bar (50 kPa), corresponding to an oxygen fraction of 50% at normal atmospheric pressure. The earliest signs of pulmonary toxicity begin with evidence of tracheobronchitis, or inflammation of the upper airways, after an asymptomatic period between 4 and 22 hours at greater than 95% oxygen,<sup id="cite_ref-Bitterman2009_41-0" class="reference"><a href="#cite_note-Bitterman2009-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> with some studies suggesting symptoms usually begin after approximately 14 hours at this level of oxygen.<sup id="cite_ref-Jackson_42-0" class="reference"><a href="#cite_note-Jackson-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> </p><p>At partial pressures of oxygen of 2 to 3 bar (200 to 300 kPa)—100% oxygen at 2 to 3 times atmospheric pressure—these symptoms may begin as early as 3 hours into exposure to oxygen.<sup id="cite_ref-Bitterman2009_41-1" class="reference"><a href="#cite_note-Bitterman2009-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> Experiments on rats breathing oxygen at pressures between 1 and 3 bars (100 and 300 kPa) suggest that pulmonary manifestations of oxygen toxicity may not be the same for <a href="https://en.wiktionary.org/wiki/normobaric" class="extiw" title="wikt:normobaric">normobaric</a> conditions as they are for <a href="/wiki/Hyperbaric_medicine" title="Hyperbaric medicine">hyperbaric</a> conditions.<sup id="cite_ref-pmid17416738_43-0" class="reference"><a href="#cite_note-pmid17416738-43"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> Evidence of decline in lung function as measured by pulmonary function testing can occur as quickly as 24 hours of continuous exposure to 100% oxygen,<sup id="cite_ref-Jackson_42-1" class="reference"><a href="#cite_note-Jackson-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> with evidence of <a href="/wiki/Diffuse_alveolar_damage" title="Diffuse alveolar damage">diffuse alveolar damage</a> and the onset of <a href="/wiki/Acute_respiratory_distress_syndrome" title="Acute respiratory distress syndrome">acute respiratory distress syndrome</a> usually occurring after 48 hours on 100% oxygen.<sup id="cite_ref-Bitterman2009_41-2" class="reference"><a href="#cite_note-Bitterman2009-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> Breathing 100% oxygen also eventually leads to collapse of the <a href="/wiki/Pulmonary_alveolus" title="Pulmonary alveolus">alveoli</a> (<a href="/wiki/Atelectasis" title="Atelectasis">atelectasis</a>), while—at the same partial pressure of oxygen—the presence of significant partial pressures of inert gases, typically nitrogen, will prevent this effect.<sup id="cite_ref-Wittner_44-0" class="reference"><a href="#cite_note-Wittner-44"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup> </p><p>Preterm newborns are known to be at higher risk for <a href="/wiki/Bronchopulmonary_dysplasia" title="Bronchopulmonary dysplasia">bronchopulmonary dysplasia</a> with extended exposure to high concentrations of oxygen.<sup id="cite_ref-Bancalari_45-0" class="reference"><a href="#cite_note-Bancalari-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> Other groups at higher risk for oxygen toxicity are patients on <a href="/wiki/Mechanical_ventilation" title="Mechanical ventilation">mechanical ventilation</a> with exposure to levels of oxygen greater than 50%, and patients exposed to chemicals that increase risk for oxygen toxicity such the chemotherapeutic agent <a href="/wiki/Bleomycin" title="Bleomycin">bleomycin</a>.<sup id="cite_ref-Jackson_42-2" class="reference"><a href="#cite_note-Jackson-42"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup> Therefore, current guidelines for patients on mechanical ventilation in <a href="/wiki/Intensive_care" class="mw-redirect" title="Intensive care">intensive care</a> recommend keeping oxygen concentration less than 60%.<sup id="cite_ref-Bitterman2009_41-3" class="reference"><a href="#cite_note-Bitterman2009-41"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> Likewise, divers who undergo treatment of <a href="/wiki/Decompression_sickness" title="Decompression sickness">decompression sickness</a> are at increased risk of oxygen toxicity as treatment entails exposure to long periods of oxygen breathing under hyperbaric conditions, in addition to any oxygen exposure during the dive.<sup id="cite_ref-smerz_34-3" class="reference"><a href="#cite_note-smerz-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Ocular_toxicity">Ocular toxicity</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=9" title="Edit section: Ocular toxicity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Retinopathy_of_prematurity" title="Retinopathy of prematurity">Retinopathy of prematurity</a></div> <p>Prolonged exposure to high inspired fractions of oxygen causes damage to the <a href="/wiki/Retina" title="Retina">retina</a>.<sup id="cite_ref-NEDU47_46-0" class="reference"><a href="#cite_note-NEDU47-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid754368_47-0" class="reference"><a href="#cite_note-pmid754368-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid1701697_48-0" class="reference"><a href="#cite_note-pmid1701697-48"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> Damage to the developing eye of infants exposed to high oxygen fraction at normal pressure has a different mechanism and effect from the eye damage experienced by adult divers under hyperbaric conditions.<sup id="cite_ref-pmid9603802_49-0" class="reference"><a href="#cite_note-pmid9603802-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Butler_50-0" class="reference"><a href="#cite_note-Butler-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> Hyperoxia may be a contributing factor for the disorder called retrolental fibroplasia or retinopathy of prematurity (ROP) in infants.<sup id="cite_ref-pmid9603802_49-1" class="reference"><a href="#cite_note-pmid9603802-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nichols_51-0" class="reference"><a href="#cite_note-Nichols-51"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> In preterm infants, the retina is often not fully vascularised. Retinopathy of prematurity occurs when the development of the retinal vasculature is arrested and then proceeds abnormally. Associated with the growth of these new vessels is <a href="/wiki/Granulation_tissue" title="Granulation tissue">fibrous tissue</a> (scar tissue) that may contract to cause retinal detachment. Supplemental oxygen exposure, while a <a href="/wiki/Risk_factor" title="Risk factor">risk factor</a>, is not the main risk factor for development of this disease. Restricting supplemental oxygen use does not necessarily reduce the rate of retinopathy of prematurity, and may raise the risk of hypoxia-related systemic complications.<sup id="cite_ref-pmid9603802_49-2" class="reference"><a href="#cite_note-pmid9603802-49"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> </p><p>Hyperoxic <a href="/wiki/Myopia" title="Myopia">myopia</a> has occurred in closed circuit oxygen rebreather divers with prolonged exposures.<sup id="cite_ref-Butler_50-1" class="reference"><a href="#cite_note-Butler-50"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-shykoff3492_52-0" class="reference"><a href="#cite_note-shykoff3492-52"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid18500077_53-0" class="reference"><a href="#cite_note-pmid18500077-53"><span class="cite-bracket">[</span>53<span class="cite-bracket">]</span></a></sup> It also occurs frequently in those undergoing repeated hyperbaric oxygen therapy.<sup id="cite_ref-pmid754368_47-1" class="reference"><a href="#cite_note-pmid754368-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-myopialength_54-0" class="reference"><a href="#cite_note-myopialength-54"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup> This is due to an increase in the refractive power of the <a href="/wiki/Lens_(anatomy)" class="mw-redirect" title="Lens (anatomy)">lens</a>, since axial length and <a href="/wiki/Keratometer" title="Keratometer">keratometry</a> readings do not reveal a <a href="/wiki/Cornea" title="Cornea">corneal</a> or length basis for a myopic shift.<sup id="cite_ref-myopialength_54-1" class="reference"><a href="#cite_note-myopialength-54"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid16358652_55-0" class="reference"><a href="#cite_note-pmid16358652-55"><span class="cite-bracket">[</span>55<span class="cite-bracket">]</span></a></sup> It is usually reversible with time.<sup id="cite_ref-pmid754368_47-2" class="reference"><a href="#cite_note-pmid754368-47"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-myopialength_54-2" class="reference"><a href="#cite_note-myopialength-54"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup> </p><p>A possible side effect of hyperbaric oxygen therapy is the initial or further development of <a href="/wiki/Cataract" title="Cataract">cataracts</a>, which are an increase in opacity of the lens of the eye which reduces visual acuity, and can eventually result in blindness. This is a rare event, associated with lifetime exposure to raised oxygen concentration, and may be under-reported as it develops very slowly. The cause is not fully understood, but evidence suggests that raised oxygen levels may cause accelerated deterioration of the <a href="/wiki/Vitreous_humour" class="mw-redirect" title="Vitreous humour">vitreous humour</a> due to degradation of lens crystallins by cross-linking, forming aggregates capable of scattering light. This may be an end-state development of the more commonly observed myopic shift associated with hyperbaric treatment.<sup id="cite_ref-Bennett_and_Cooper_2022_6-1" class="reference"><a href="#cite_note-Bennett_and_Cooper_2022-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Mechanism">Mechanism</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=10" title="Edit section: Mechanism"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main articles: <a href="/wiki/Reactive_oxygen_species" title="Reactive oxygen species">Reactive oxygen species</a> and <a href="/wiki/Oxidative_stress" title="Oxidative stress">Oxidative stress</a></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Lipid_peroxidation.svg" class="mw-file-description"><img alt="An unsaturated lipid reacts with a hydroxyl radical to form a lipid radical (initiation), which then reacts with di-oxygen, forming a lipid peroxyl radical. This then reacts with another unsaturated lipid, yielding a lipid peroxide and another lipid radical, which can continue the reaction (propagation)." src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Lipid_peroxidation.svg/300px-Lipid_peroxidation.svg.png" decoding="async" width="300" height="253" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Lipid_peroxidation.svg/450px-Lipid_peroxidation.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9e/Lipid_peroxidation.svg/600px-Lipid_peroxidation.svg.png 2x" data-file-width="1690" data-file-height="1425" /></a><figcaption>The lipid peroxidation mechanism shows a single radical initiating a chain reaction which converts unsaturated lipids to lipid peroxides.</figcaption></figure> <p>The biochemical basis for the toxicity of oxygen is the partial reduction of oxygen by one or two electrons to form reactive oxygen species,<sup id="cite_ref-FOOTNOTEClarkThom2003360_56-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003360-56"><span class="cite-bracket">[</span>56<span class="cite-bracket">]</span></a></sup> which are natural by-products of the normal <a href="/wiki/Metabolism" title="Metabolism">metabolism</a> of oxygen and have important roles in <a href="/wiki/Cell_signalling" class="mw-redirect" title="Cell signalling">cell signalling</a>.<sup id="cite_ref-pmid16809515_57-0" class="reference"><a href="#cite_note-pmid16809515-57"><span class="cite-bracket">[</span>57<span class="cite-bracket">]</span></a></sup> One species produced by the body, the <a href="/wiki/Superoxide" title="Superoxide">superoxide</a> anion (<span class="chemf nowrap">O<span class="nowrap"><span style="display:inline-block;margin-bottom:-0.3em;vertical-align:-0.4em;line-height:1em;font-size:80%;text-align:left"><sup style="font-size:inherit;line-height:inherit;vertical-align:baseline">−</sup><br /><sub style="font-size:inherit;line-height:inherit;vertical-align:baseline">2</sub></span></span></span>),<sup id="cite_ref-pmid1316738_58-0" class="reference"><a href="#cite_note-pmid1316738-58"><span class="cite-bracket">[</span>58<span class="cite-bracket">]</span></a></sup> is possibly involved in iron acquisition.<sup id="cite_ref-pmid12791678_59-0" class="reference"><a href="#cite_note-pmid12791678-59"><span class="cite-bracket">[</span>59<span class="cite-bracket">]</span></a></sup> Higher than normal concentrations of oxygen lead to increased levels of reactive oxygen species.<sup id="cite_ref-Fridovich_60-0" class="reference"><a href="#cite_note-Fridovich-60"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> Oxygen is necessary for cell metabolism, and the blood supplies it to all parts of the body. When oxygen is breathed at high partial pressures, a hyperoxic condition will rapidly spread, with the most vascularised tissues being most vulnerable. During times of environmental stress, levels of reactive oxygen species can increase dramatically, which can damage cell structures and produce <a href="/wiki/Oxidative_stress" title="Oxidative stress">oxidative stress</a>.<sup id="cite_ref-Bitterman_21-1" class="reference"><a href="#cite_note-Bitterman-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid18549826_61-0" class="reference"><a href="#cite_note-pmid18549826-61"><span class="cite-bracket">[</span>61<span class="cite-bracket">]</span></a></sup> </p><p>While all the reaction mechanisms of these species within the body are not yet fully understood,<sup id="cite_ref-Imlay2003_62-0" class="reference"><a href="#cite_note-Imlay2003-62"><span class="cite-bracket">[</span>62<span class="cite-bracket">]</span></a></sup> one of the most reactive products of oxidative stress is the <a href="/wiki/Hydroxyl_radical" title="Hydroxyl radical">hydroxyl radical</a> (<span class="chemf nowrap">·OH</span>), which can initiate a damaging chain reaction of <a href="/wiki/Lipid_peroxidation" title="Lipid peroxidation">lipid peroxidation</a> in the unsaturated <a href="/wiki/Lipids" class="mw-redirect" title="Lipids">lipids</a> within <a href="/wiki/Cell_membranes" class="mw-redirect" title="Cell membranes">cell membranes</a>.<sup id="cite_ref-Bowen_63-0" class="reference"><a href="#cite_note-Bowen-63"><span class="cite-bracket">[</span>63<span class="cite-bracket">]</span></a></sup> High concentrations of oxygen also increase the formation of other <a href="/wiki/Free_radical" class="mw-redirect" title="Free radical">free radicals</a>, such as <a href="/wiki/Nitric_oxide" title="Nitric oxide">nitric oxide</a>, <a href="/wiki/Peroxynitrite" title="Peroxynitrite">peroxynitrite</a>, and <a href="/wiki/Trioxidane" title="Trioxidane">trioxidane</a>, which harm <a href="/wiki/DNA" title="DNA">DNA</a> and other biomolecules.<sup id="cite_ref-Bitterman_21-2" class="reference"><a href="#cite_note-Bitterman-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid1329105_64-0" class="reference"><a href="#cite_note-pmid1329105-64"><span class="cite-bracket">[</span>64<span class="cite-bracket">]</span></a></sup> Although the body has many <a href="/wiki/Antioxidant" title="Antioxidant">antioxidant</a> systems such as <a href="/wiki/Glutathione" title="Glutathione">glutathione</a> that guard against oxidative stress, these systems are eventually overwhelmed at very high concentrations of free oxygen, and the rate of cell damage exceeds the capacity of the systems that prevent or repair it.<sup id="cite_ref-pmid2825395_65-0" class="reference"><a href="#cite_note-pmid2825395-65"><span class="cite-bracket">[</span>65<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid10372426_66-0" class="reference"><a href="#cite_note-pmid10372426-66"><span class="cite-bracket">[</span>66<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid15485085_67-0" class="reference"><a href="#cite_note-pmid15485085-67"><span class="cite-bracket">[</span>67<span class="cite-bracket">]</span></a></sup> Cell damage and cell death then result.<sup id="cite_ref-pmid1886163_68-0" class="reference"><a href="#cite_note-pmid1886163-68"><span class="cite-bracket">[</span>68<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Diagnosis">Diagnosis</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=11" title="Edit section: Diagnosis"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Diagnosis of central nervous system oxygen toxicity in divers prior to seizure is difficult as the symptoms of visual disturbance, ear problems, dizziness, confusion and nausea can be due to many factors common to the underwater environment such as <a href="/wiki/Nitrogen_narcosis" title="Nitrogen narcosis">narcosis</a>, congestion and coldness. However, these symptoms may be helpful in diagnosing the first stages of oxygen toxicity in patients undergoing hyperbaric oxygen therapy. In either case, unless there is a prior history of <a href="/wiki/Epilepsy" title="Epilepsy">epilepsy</a> or tests indicate <a href="/wiki/Hypoglycemia" title="Hypoglycemia">hypoglycaemia</a>, a seizure occurring in the setting of breathing oxygen at partial pressures greater than 1.4 bar (140 kPa) suggests a diagnosis of oxygen toxicity.<sup id="cite_ref-NBDHMT_69-0" class="reference"><a href="#cite_note-NBDHMT-69"><span class="cite-bracket">[</span>69<span class="cite-bracket">]</span></a></sup> </p><p>Diagnosis of bronchopulmonary dysplasia in newborn infants with breathing difficulties is difficult in the first few weeks. However, if the infant's breathing does not improve during this time, <a href="/wiki/Blood_tests" class="mw-redirect" title="Blood tests">blood tests</a> and <a href="/wiki/X-rays" class="mw-redirect" title="X-rays">x-rays</a> may be used to confirm bronchopulmonary dysplasia. In addition, an <a href="/wiki/Echocardiogram" class="mw-redirect" title="Echocardiogram">echocardiogram</a> can help to eliminate other possible causes such as <a href="/wiki/Congenital_heart_defects" class="mw-redirect" title="Congenital heart defects">congenital heart defects</a> or <a href="/wiki/Pulmonary_arterial_hypertension" title="Pulmonary arterial hypertension">pulmonary arterial hypertension</a>.<sup id="cite_ref-nih_bpd_Diagnosis_70-0" class="reference"><a href="#cite_note-nih_bpd_Diagnosis-70"><span class="cite-bracket">[</span>70<span class="cite-bracket">]</span></a></sup> </p><p>The diagnosis of retinopathy of prematurity in infants is typically suggested by the clinical setting. Prematurity, low birth weight, and a history of oxygen exposure are the principal indicators, while no hereditary factors have been shown to yield a pattern.<sup id="cite_ref-FOOTNOTERegilloBrownFlynn1998178_71-0" class="reference"><a href="#cite_note-FOOTNOTERegilloBrownFlynn1998178-71"><span class="cite-bracket">[</span>71<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Differential_diagnosis">Differential diagnosis</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=12" title="Edit section: Differential diagnosis"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Clinical diagnosis can be confirmed with arterial oxygen levels.<sup id="cite_ref-Cooper_et_al_2022_40-1" class="reference"><a href="#cite_note-Cooper_et_al_2022-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> A number of other conditions can be confused with oxygen toxicity, these include:<sup id="cite_ref-Cooper_et_al_2022_40-2" class="reference"><a href="#cite_note-Cooper_et_al_2022-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </p> <ul><li><a href="/wiki/Carbon_monoxide_poisoning" title="Carbon monoxide poisoning">Carbon monoxide poisoning</a></li> <li>Cerebrovascular event (<a href="/wiki/Stroke" title="Stroke">stroke</a>)</li> <li><a href="/wiki/Envenomation" title="Envenomation">Envenomation</a> or <a href="/wiki/Toxin" title="Toxin">toxin</a> ingestion</li> <li><a href="/wiki/Hypercapnia" title="Hypercapnia">Hypercapnia</a> (Carbon dioxide narcosis)</li> <li><a href="/wiki/Hyperventilation" title="Hyperventilation">Hyperventilation</a></li> <li><a href="/wiki/Hypoglycemia" title="Hypoglycemia">Hypoglycemia</a></li> <li><a href="/wiki/Infection" title="Infection">Infection</a></li> <li><a href="/wiki/Migraine" title="Migraine">Migraine</a></li> <li><a href="/wiki/Multiple_sclerosis" title="Multiple sclerosis">Multiple sclerosis</a></li> <li>Seizure disorder (<a href="/wiki/Epilepsy" title="Epilepsy">epilepsy</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Prevention">Prevention</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=13" title="Edit section: Prevention"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Cylinder_mod.jpg" class="mw-file-description"><img alt="Closeup of a diving cylinder with a band reading "NITROX". A hand-printed label at the neck reads "MOD 28m 36% O2", with the 28 in much larger size." src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Cylinder_mod.jpg/220px-Cylinder_mod.jpg" decoding="async" width="220" height="264" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Cylinder_mod.jpg/330px-Cylinder_mod.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Cylinder_mod.jpg/440px-Cylinder_mod.jpg 2x" data-file-width="1536" data-file-height="1844" /></a><figcaption>The label on the diving cylinder shows that it contains oxygen-rich gas (36%) and is boldly marked with a maximum operating depth of 28 metres (92 ft)</figcaption></figure> <p>The prevention of oxygen toxicity depends entirely on the setting. Both underwater and in space, proper precautions can eliminate the most pernicious effects. Premature infants commonly require supplemental oxygen to treat complications of preterm birth. In this case prevention of bronchopulmonary dysplasia and retinopathy of prematurity must be carried out without compromising a supply of oxygen adequate to preserve the infant's life.<sup id="cite_ref-Nursing_guidelines_72-0" class="reference"><a href="#cite_note-Nursing_guidelines-72"><span class="cite-bracket">[</span>72<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Underwater">Underwater</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=14" title="Edit section: Underwater"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Maximum_operating_depth" title="Maximum operating depth">Maximum operating depth</a>, <a href="/wiki/Scuba_gas_planning" title="Scuba gas planning">Scuba gas planning</a>, <a href="/wiki/Rebreather_diving" title="Rebreather diving">Rebreather diving</a>, and <a href="/wiki/Saturation_diving" title="Saturation diving">Saturation diving</a></div> <p>Oxygen toxicity is a catastrophic hazard in <a href="/wiki/Scuba_diving" title="Scuba diving">scuba diving</a>, because a seizure results in high risk of death by drowning.<sup id="cite_ref-FOOTNOTELang20017_39-1" class="reference"><a href="#cite_note-FOOTNOTELang20017-39"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Doolette_and_Mitchell_2018_73-0" class="reference"><a href="#cite_note-Doolette_and_Mitchell_2018-73"><span class="cite-bracket">[</span>73<span class="cite-bracket">]</span></a></sup> The seizure may occur suddenly and with no warning symptoms.<sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3_19-1" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> The effects are sudden convulsions and unconsciousness, during which victims can lose their <a href="/wiki/Diving_regulator" title="Diving regulator">regulator</a> and drown.<sup id="cite_ref-Mitchell2012_74-0" class="reference"><a href="#cite_note-Mitchell2012-74"><span class="cite-bracket">[</span>74<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEClarkThom2003375_75-0" class="reference"><a href="#cite_note-FOOTNOTEClarkThom2003375-75"><span class="cite-bracket">[</span>75<span class="cite-bracket">]</span></a></sup> One of the advantages of a <a href="/wiki/Full-face_diving_mask" title="Full-face diving mask">full-face diving mask</a> is prevention of regulator loss in the event of a seizure. Mouthpiece retaining straps are a relatively inexpensive alternative with a similar but less effective function.<sup id="cite_ref-Doolette_and_Mitchell_2018_73-1" class="reference"><a href="#cite_note-Doolette_and_Mitchell_2018-73"><span class="cite-bracket">[</span>73<span class="cite-bracket">]</span></a></sup> As there is an increased risk of central nervous system oxygen toxicity on deep dives, long dives and dives where oxygen-rich breathing gases are used, divers are taught to calculate a <a href="/wiki/Maximum_operating_depth" title="Maximum operating depth">maximum operating depth</a> for oxygen-rich <a href="/wiki/Breathing_gas" title="Breathing gas">breathing gases</a>, and cylinders containing such mixtures should be clearly marked with that depth.<sup id="cite_ref-padi_24-1" class="reference"><a href="#cite_note-padi-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTELang2001195_76-0" class="reference"><a href="#cite_note-FOOTNOTELang2001195-76"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> </p><p>The risk of seizure appears to be a function of dose – a cumulative combination of partial pressure and duration. The threshold for oxygen partial pressure below which seizures never occur has not been established, and may depend on many variables, some of them personal. The risk to a specific person can vary considerably depending on individual sensitivity, level of exercise, and carbon dioxide retention, which is influenced by work of breathing.<sup id="cite_ref-Doolette_and_Mitchell_2018_73-2" class="reference"><a href="#cite_note-Doolette_and_Mitchell_2018-73"><span class="cite-bracket">[</span>73<span class="cite-bracket">]</span></a></sup> </p><p>In some <a href="/wiki/Diver_training" title="Diver training">diver training</a> courses for modes of diving in which exposure may reach levels with significant risk, divers are taught to plan and monitor what is called the 'oxygen clock' of their dives.<sup id="cite_ref-FOOTNOTELang2001195_76-1" class="reference"><a href="#cite_note-FOOTNOTELang2001195-76"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> This is a notional alarm clock, which ticks more quickly at increased oxygen pressure and is set to activate at the maximum single exposure limit recommended in the <a href="/wiki/National_Oceanic_and_Atmospheric_Administration" title="National Oceanic and Atmospheric Administration">National Oceanic and Atmospheric Administration</a> Diving Manual.<sup id="cite_ref-padi_24-2" class="reference"><a href="#cite_note-padi-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTELang2001195_76-2" class="reference"><a href="#cite_note-FOOTNOTELang2001195-76"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> For the following partial pressures of oxygen the limits are: 45 minutes at 1.6 bar (160 kPa), 120 minutes at 1.5 bar (150 kPa), 150 minutes at 1.4 bar (140 kPa), 180 minutes at 1.3 bar (130 kPa) and 210 minutes at 1.2 bar (120 kPa), but it is impossible to predict with any reliability whether or when toxicity symptoms will occur.<sup id="cite_ref-Butler3727183_77-0" class="reference"><a href="#cite_note-Butler3727183-77"><span class="cite-bracket">[</span>77<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Butler15233156_78-0" class="reference"><a href="#cite_note-Butler15233156-78"><span class="cite-bracket">[</span>78<span class="cite-bracket">]</span></a></sup> Many <a href="/wiki/Nitrox" title="Nitrox">nitrox</a>-capable <a href="/wiki/Dive_computer" title="Dive computer">dive computers</a> calculate an oxygen loading and can track it across multiple dives. The aim is to avoid activating the alarm by reducing the partial pressure of oxygen in the breathing gas or by reducing the time spent breathing gas of greater oxygen partial pressure. As the partial pressure of oxygen increases with the fraction of oxygen in the breathing gas and the depth of the dive, the diver obtains more time on the oxygen clock by diving at a shallower depth, by breathing a less oxygen-rich gas, or by shortening the duration of exposure to oxygen-rich gases.<sup id="cite_ref-FOOTNOTEClarkLambertsen1970157–62_79-0" class="reference"><a href="#cite_note-FOOTNOTEClarkLambertsen1970157–62-79"><span class="cite-bracket">[</span>79<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Baker2000_80-0" class="reference"><a href="#cite_note-Baker2000-80"><span class="cite-bracket">[</span>80<span class="cite-bracket">]</span></a></sup> This function is provided by some technical diving decompression computers and rebreather control and monitoring hardware.<sup id="cite_ref-Perdix_81-0" class="reference"><a href="#cite_note-Perdix-81"><span class="cite-bracket">[</span>81<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ap_vision_82-0" class="reference"><a href="#cite_note-ap_vision-82"><span class="cite-bracket">[</span>82<span class="cite-bracket">]</span></a></sup> </p><p>Diving below 56 m (184 ft) on air would expose a diver to increasing danger of oxygen toxicity as the partial pressure of oxygen exceeds 1.4 bar (140 kPa), so a gas mixture should be used which contains less than 21% oxygen (termed a hypoxic mixture). Increasing the proportion of <a href="/wiki/Nitrogen" title="Nitrogen">nitrogen</a> is not viable, since it would produce a strongly <a href="/wiki/Nitrogen_narcosis" title="Nitrogen narcosis">narcotic</a> mixture. However, <a href="/wiki/Helium" title="Helium">helium</a> is not narcotic, and a usable mixture may be <a href="/wiki/Gas_blending" title="Gas blending">blended</a> either by completely replacing nitrogen with helium (the resulting mix is called <a href="/wiki/Heliox" title="Heliox">heliox</a>), or by replacing part of the nitrogen with helium, producing a <a href="/wiki/Trimix_(breathing_gas)" title="Trimix (breathing gas)">trimix</a>.<sup id="cite_ref-FOOTNOTEHamiltonThalmann2003475,_479_83-0" class="reference"><a href="#cite_note-FOOTNOTEHamiltonThalmann2003475,_479-83"><span class="cite-bracket">[</span>83<span class="cite-bracket">]</span></a></sup> </p><p>Pulmonary oxygen toxicity is an entirely avoidable event while diving. The limited duration and naturally intermittent nature of most diving makes this a relatively rare (and even then, reversible) complication for divers.<sup id="cite_ref-FOOTNOTEClarkLambertsen1970270_84-0" class="reference"><a href="#cite_note-FOOTNOTEClarkLambertsen1970270-84"><span class="cite-bracket">[</span>84<span class="cite-bracket">]</span></a></sup> Established guidelines enable divers to calculate when they are at risk of pulmonary toxicity.<sup id="cite_ref-repex1_85-0" class="reference"><a href="#cite_note-repex1-85"><span class="cite-bracket">[</span>85<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-repex2_86-0" class="reference"><a href="#cite_note-repex2-86"><span class="cite-bracket">[</span>86<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-spums_87-0" class="reference"><a href="#cite_note-spums-87"><span class="cite-bracket">[</span>87<span class="cite-bracket">]</span></a></sup> In <a href="/wiki/Saturation_diving" title="Saturation diving">saturation diving</a> it can be avoided by limiting the oxygen content of gas in living areas to below 0.4 bar.<sup id="cite_ref-EOW_88-0" class="reference"><a href="#cite_note-EOW-88"><span class="cite-bracket">[</span>88<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Screening">Screening</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=15" title="Edit section: Screening"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The intention of screening using an <a href="/w/index.php?title=Oxygen_tolerance_test&action=edit&redlink=1" class="new" title="Oxygen tolerance test (page does not exist)">oxygen tolerance test</a> is to identify divers with low tolerance to high partial pressures of hyperbaric oxygen who may be more prone to oxygen convulsions during diving operations or during hyperbaric treatment for decompression sickness. The value of this test has been questioned, and statistical studies have shown low incidence of seizures during standard hyperbaric treatment schedules, so some navies have discontinued its use, though an others continue to require the test for all candidate divers.<sup id="cite_ref-Ghosh_et_al_2015_89-0" class="reference"><a href="#cite_note-Ghosh_et_al_2015-89"><span class="cite-bracket">[</span>89<span class="cite-bracket">]</span></a></sup> </p><p>The variability in tolerance and other variable factors such as workload have resulted in the U.S. Navy abandoning screening for oxygen tolerance. Of the 6,250 oxygen-tolerance tests performed between 1976 and 1997, only 6 episodes of oxygen toxicity were observed (0.1%).<sup id="cite_ref-Gould_90-0" class="reference"><a href="#cite_note-Gould-90"><span class="cite-bracket">[</span>90<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid3705251_91-0" class="reference"><a href="#cite_note-pmid3705251-91"><span class="cite-bracket">[</span>91<span class="cite-bracket">]</span></a></sup> </p><p>The oxygen tolerance test used by the <a href="/wiki/Indian_Navy" title="Indian Navy">Indian Navy</a>, which follows recommendations of the <a href="/wiki/US_Navy" class="mw-redirect" title="US Navy">US Navy</a> and US National Oceanic and Atmospheric Administration, is to breathe 100% oxygen delivered by BIBS mask at an ambient pressure of 2.8 bar absolute (18 msw) for 30 minutes, at rest in a dry hyperbaric chamber. No symptoms of CNS oxygen toxicity may be observed by the attendant.<sup id="cite_ref-Ghosh_et_al_2015_89-1" class="reference"><a href="#cite_note-Ghosh_et_al_2015-89"><span class="cite-bracket">[</span>89<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Hyperbaric_setting">Hyperbaric setting</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=16" title="Edit section: Hyperbaric setting"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The presence of a fever or a history of seizure is a relative contraindication to hyperbaric oxygen treatment.<sup id="cite_ref-Latham2008_92-0" class="reference"><a href="#cite_note-Latham2008-92"><span class="cite-bracket">[</span>92<span class="cite-bracket">]</span></a></sup> The schedules used for treatment of <a href="/wiki/Decompression_illness" title="Decompression illness">decompression illness</a> allow for periods of breathing air rather than 100% oxygen (air breaks) to reduce the chance of seizure or lung damage. The U.S. Navy uses treatment tables based on periods alternating between 100% oxygen and air. For example, USN table 6 requires 75 minutes (three periods of 20 minutes oxygen/5 minutes air) at an ambient pressure of 2.8 <a href="/wiki/Atmosphere_(unit)" class="mw-redirect" title="Atmosphere (unit)">standard atmospheres</a> (280 kPa), equivalent to a depth of 18 metres (60 ft). This is followed by a slow reduction in pressure to 1.9 atm (190 kPa) over 30 minutes on oxygen. The patient then remains at that pressure for a further 150 minutes, consisting of two periods of 15 minutes air/60 minutes oxygen, before the pressure is reduced to atmospheric over 30 minutes on oxygen.<sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201141vol._5,_ch._20_93-0" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201141vol._5,_ch._20-93"><span class="cite-bracket">[</span>93<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Vitamin_E" title="Vitamin E">Vitamin E</a> and <a href="/wiki/Selenium" title="Selenium">selenium</a> were proposed and later rejected as a potential method of protection against pulmonary oxygen toxicity.<sup id="cite_ref-Schatte_94-0" class="reference"><a href="#cite_note-Schatte-94"><span class="cite-bracket">[</span>94<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid1852722_95-0" class="reference"><a href="#cite_note-pmid1852722-95"><span class="cite-bracket">[</span>95<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-GUEdvd_96-0" class="reference"><a href="#cite_note-GUEdvd-96"><span class="cite-bracket">[</span>96<span class="cite-bracket">]</span></a></sup> There is however some experimental evidence in rats that vitamin E and selenium aid in preventing <i><a href="/wiki/In_vivo" title="In vivo">in vivo</a></i> <a href="/wiki/Lipid_peroxidation" title="Lipid peroxidation">lipid peroxidation</a> and free radical damage, and therefore prevent retinal changes following repetitive hyperbaric oxygen exposures.<sup id="cite_ref-pmid2744583_97-0" class="reference"><a href="#cite_note-pmid2744583-97"><span class="cite-bracket">[</span>97<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Normobaric_setting">Normobaric setting</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=17" title="Edit section: Normobaric setting"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Bronchopulmonary_dysplasia" title="Bronchopulmonary dysplasia">Bronchopulmonary dysplasia</a> is reversible in the early stages by use of break periods on lower pressures of oxygen, but it may eventually result in irreversible lung injury if allowed to progress to severe damage. One or two days of exposure without oxygen breaks are needed to cause such damage.<sup id="cite_ref-Patel_16-2" class="reference"><a href="#cite_note-Patel-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Retinopathy_of_prematurity" title="Retinopathy of prematurity">Retinopathy of prematurity</a> is largely preventable by screening. Current guidelines require that all babies of less than 32 weeks <a href="/wiki/Gestational_age_(obstetrics)" class="mw-redirect" title="Gestational age (obstetrics)">gestational age</a> or having a birth weight less than 1.5 kg (3.3 lb) should be screened for retinopathy of prematurity at least every two weeks.<sup id="cite_ref-rcpch_98-0" class="reference"><a href="#cite_note-rcpch-98"><span class="cite-bracket">[</span>98<span class="cite-bracket">]</span></a></sup> The <i>National Cooperative Study</i> in 1954 showed a causal link between supplemental oxygen and retinopathy of prematurity, but subsequent curtailment of supplemental oxygen caused an increase in infant mortality. To balance the risks of <a href="/wiki/Hypoxia_(medical)" class="mw-redirect" title="Hypoxia (medical)">hypoxia</a> and retinopathy of prematurity, modern protocols now require monitoring of blood oxygen levels in premature infants receiving oxygen.<sup id="cite_ref-Silverman_99-0" class="reference"><a href="#cite_note-Silverman-99"><span class="cite-bracket">[</span>99<span class="cite-bracket">]</span></a></sup> </p><p>Careful titration of dosage to minimise delivered concentration while achieving the desired level of oxygenation will both minimise the risk of oxygen toxicity damage and the amount of oxygen used for long term therapy.<sup id="cite_ref-Helmerhorst_et_al_2015_37-1" class="reference"><a href="#cite_note-Helmerhorst_et_al_2015-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> A typical target for oxygen saturation when receiving oxygen therapy, would be in the range of 91-95%, in both term and preterm infants.<sup id="cite_ref-Nursing_guidelines_72-1" class="reference"><a href="#cite_note-Nursing_guidelines-72"><span class="cite-bracket">[</span>72<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Hypobaric_setting">Hypobaric setting</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=18" title="Edit section: Hypobaric setting"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In low-pressure environments oxygen toxicity may be avoided since the toxicity is caused by high partial pressure of oxygen, not by high oxygen fraction. This is illustrated by the use of pure oxygen in spacesuits, which must operate at low pressure, and a high oxygen fraction and cabin pressure lower than normal atmospheric pressure in early spacecraft, for example, the <a href="/wiki/Project_Gemini" title="Project Gemini">Gemini</a> and <a href="/wiki/Apollo_spacecraft" class="mw-redirect" title="Apollo spacecraft">Apollo spacecraft</a>.<sup id="cite_ref-pmid2730484_100-0" class="reference"><a href="#cite_note-pmid2730484-100"><span class="cite-bracket">[</span>100<span class="cite-bracket">]</span></a></sup> In such applications as <a href="/wiki/Extra-vehicular_activity" class="mw-redirect" title="Extra-vehicular activity">extra-vehicular activity</a>, high-fraction oxygen is non-toxic, even at breathing mixture fractions approaching 100%, because the oxygen partial pressure is not allowed to <a href="/wiki/Chronic_toxicity" title="Chronic toxicity">chronically</a> exceed 0.3 bar (4.4 psi).<sup id="cite_ref-pmid2730484_100-1" class="reference"><a href="#cite_note-pmid2730484-100"><span class="cite-bracket">[</span>100<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Management">Management</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=19" title="Edit section: Management"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Human_eye_cross_section_detached_retina.svg" class="mw-file-description"><img alt="Cross-section diagram of an eye, showing the pupil (left), the choroid lens (in yellow, around the eye's perimeter), the retina (in red, below the choroid lens and around most of the eye's right-hand perimeter) and the optic nerve (bottom right, leading off from the retina in red)." src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Human_eye_cross_section_detached_retina.svg/220px-Human_eye_cross_section_detached_retina.svg.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Human_eye_cross_section_detached_retina.svg/330px-Human_eye_cross_section_detached_retina.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Human_eye_cross_section_detached_retina.svg/440px-Human_eye_cross_section_detached_retina.svg.png 2x" data-file-width="500" data-file-height="400" /></a><figcaption>The retina (red) is detached at the top of the eye.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Human_eye_cross_section_scleral_buckle.svg" class="mw-file-description"><img alt="Cross-section diagram of an eye, now showing scleral buckle, in blue, pressing in on the top and bottom of the eye, pressing the choroid lens and the retina together." src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Human_eye_cross_section_scleral_buckle.svg/220px-Human_eye_cross_section_scleral_buckle.svg.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Human_eye_cross_section_scleral_buckle.svg/330px-Human_eye_cross_section_scleral_buckle.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/43/Human_eye_cross_section_scleral_buckle.svg/440px-Human_eye_cross_section_scleral_buckle.svg.png 2x" data-file-width="500" data-file-height="400" /></a><figcaption>The silicone band (<a href="/wiki/Scleral_buckle" title="Scleral buckle">scleral buckle</a>, blue) is placed around the eye. This brings the wall of the eye into contact with the detached retina, allowing the retina to re-attach.</figcaption></figure> <p>During hyperbaric oxygen therapy, the patient will usually breathe 100% oxygen from a mask while inside a hyperbaric chamber pressurised with air to about 2.8 bar (280 kPa). Seizures during the therapy are managed by removing the mask from the patient, thereby dropping the partial pressure of oxygen inspired below 0.6 bar (60 kPa).<sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3_19-2" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201144vol._1,_ch._3-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p><p>A seizure underwater requires that the diver be brought to the surface as soon as practicable. Although for many years the recommendation has been not to raise the diver during the seizure itself, owing to the danger of <a href="/wiki/Arterial_gas_embolism" class="mw-redirect" title="Arterial gas embolism">arterial gas embolism</a> (AGE),<sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201145vol._1,_ch._3_101-0" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201145vol._1,_ch._3-101"><span class="cite-bracket">[</span>101<span class="cite-bracket">]</span></a></sup> there is some evidence that the glottis does not fully obstruct the airway.<sup id="cite_ref-RBW2008_102-0" class="reference"><a href="#cite_note-RBW2008-102"><span class="cite-bracket">[</span>102<span class="cite-bracket">]</span></a></sup> This has led to the current recommendation by the Diving Committee of the Undersea and Hyperbaric Medical Society that a diver should be raised during the seizure's clonic (convulsive) phase if the regulator is not in the diver's mouth—as the danger of drowning is then greater than that of AGE—but the ascent should be delayed until the end of the clonic phase otherwise.<sup id="cite_ref-Mitchell2012_74-1" class="reference"><a href="#cite_note-Mitchell2012-74"><span class="cite-bracket">[</span>74<span class="cite-bracket">]</span></a></sup> Rescuers ensure that their own safety is not compromised during the convulsive phase. They then ensure that where the victim's air supply is established it is maintained, and carry out a <a href="/wiki/Controlled_buoyant_lift" class="mw-redirect" title="Controlled buoyant lift">controlled buoyant lift</a>. Lifting an unconscious body is taught by most recreational <a href="/wiki/Diver_training" title="Diver training">diver training</a> agencies as an advanced skill, and for professional divers it is a basic skill, as it is one of the primary functions of the <a href="/wiki/Standby_diver" class="mw-redirect" title="Standby diver">standby diver</a>. Upon reaching the surface, emergency services are always contacted as there is a possibility of further complications requiring medical attention.<sup id="cite_ref-DANoxtox_103-0" class="reference"><a href="#cite_note-DANoxtox-103"><span class="cite-bracket">[</span>103<span class="cite-bracket">]</span></a></sup> If symptoms develop other than a seizure underwater the diver should immediately switch to a gas with a lower oxygen fraction or ascend to a shallower depth if decompression obligations allow. If a chamber is available at the surface, surface decompression is a recommended option. The U.S. Navy has published procedures for completing decompression stops where a recompression chamber is not immediately available.<sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201137–39vol._2,_ch._9_104-0" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201137–39vol._2,_ch._9-104"><span class="cite-bracket">[</span>104<span class="cite-bracket">]</span></a></sup> Some dive computers will recalculate decompression requirements for alternative mixtures provided the actual gas setting is activated.<sup id="cite_ref-Perdix_81-1" class="reference"><a href="#cite_note-Perdix-81"><span class="cite-bracket">[</span>81<span class="cite-bracket">]</span></a></sup> </p><p>The occurrence of symptoms of bronchopulmonary dysplasia or acute respiratory distress syndrome is treated by lowering the fraction of oxygen administered, along with a reduction in the periods of exposure and an increase in the break periods where normal air is supplied. Where supplemental oxygen is required for treatment of another disease (particularly in infants), a <a href="/wiki/Ventilator" title="Ventilator">ventilator</a> may be needed to ensure that the lung tissue remains inflated. Reductions in pressure and exposure will be made progressively, and medications such as <a href="/wiki/Bronchodilators" class="mw-redirect" title="Bronchodilators">bronchodilators</a> and <a href="/wiki/Pulmonary_surfactant" title="Pulmonary surfactant">pulmonary surfactants</a> may be used.<sup id="cite_ref-MPBPD_105-0" class="reference"><a href="#cite_note-MPBPD-105"><span class="cite-bracket">[</span>105<span class="cite-bracket">]</span></a></sup> </p><p>Divers manage the risk of pulmonary damage by limiting exposure to levels shown to be generally acceptable by experimental evidence, using a system of accumulated <span title="See entry on this page at § oxygen toxicity unit" class="glossary-link-internal" style="border-bottom: 1px dashed #86a1ff; color:initial;"><a href="/wiki/Glossary_of_underwater_diving_terminology:_H%E2%80%93O#oxygen_toxicity_unit" title="Glossary of underwater diving terminology: H–O">oxygen toxicity unit</a></span>s which are based on exposure time at specified partial pressures. In the event of emergency treatment for decompression illness, it may be necessary to exceed normal exposure limits to manage more critical symptoms.<sup id="cite_ref-NOAA_Diving_Manual_2001_33-2" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </p><p>Retinopathy of prematurity may <a href="/wiki/Regression_(medicine)" title="Regression (medicine)">regress</a> spontaneously, but should the disease progress beyond a threshold (defined as five contiguous or eight cumulative hours of <a href="/wiki/Retinopathy_of_prematurity#International_classification" title="Retinopathy of prematurity">stage 3 retinopathy of prematurity</a>), both <a href="/wiki/Cryosurgery" title="Cryosurgery">cryosurgery</a> and <a href="/wiki/Laser_surgery" title="Laser surgery">laser surgery</a> have been shown to reduce the risk of blindness as an outcome. Where the disease has progressed further, techniques such as <a href="/wiki/Scleral_buckle" title="Scleral buckle">scleral buckling</a> and <a href="/wiki/Vitrectomy" title="Vitrectomy">vitrectomy</a> surgery may assist in re-attaching the retina.<sup id="cite_ref-FOOTNOTERegilloBrownFlynn1998184_106-0" class="reference"><a href="#cite_note-FOOTNOTERegilloBrownFlynn1998184-106"><span class="cite-bracket">[</span>106<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Repetitive_exposure">Repetitive exposure</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=20" title="Edit section: Repetitive exposure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Repeated exposure to potentially toxic oxygen concentrations in breathing gas is fairly common in hyperbaric activity, particularly in <a href="/wiki/Hyperbaric_medicine" title="Hyperbaric medicine">hyperbaric medicine</a>, <a href="/wiki/Saturation_diving" title="Saturation diving">saturation diving</a>, <a href="/wiki/Underwater_habitat" title="Underwater habitat">underwater habitats</a>, and repetitive <a href="/wiki/Decompression_diving" class="mw-redirect" title="Decompression diving">decompression diving</a>. Research at the <a href="/wiki/National_Oceanic_and_Atmospheric_Administration" title="National Oceanic and Atmospheric Administration">National Oceanic and Atmospheric Administration</a> (NOAA) by <a href="/wiki/Robert_William_Hamilton_Jr." title="Robert William Hamilton Jr.">R.W. Hamilton</a> and others determined acceptable levels of exposure for single and repeated exposures. A distinction is made between acceptable exposure for acute and chronic toxicity, but these are really the extremes of a possible continuous range of exposures. A further distinction can be made between routine exposure and exposure required for emergency treatment, where a higher risk of oxygen toxicity may be justified to achieve a reduction of a more critical injury, particularly when in a relatively safe controlled and monitored environment.<sup id="cite_ref-NOAA_Diving_Manual_2001_33-3" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201141vol._5,_ch._20_93-1" class="reference"><a href="#cite_note-FOOTNOTEU.S._Navy_Diving_Manual201141vol._5,_ch._20-93"><span class="cite-bracket">[</span>93<span class="cite-bracket">]</span></a></sup> </p><p>The Repex (repetitive exposure) method, developed in 1988, allows oxygen toxicity dosage to be calculated using a single dose value equivalent to 1 minute of 100% oxygen at atmospheric pressure called an Oxygen Tolerance Unit (OTU), and is used to avoid toxic effects over several days of operational exposure. Some dive computers will automatically track the dosage based on measured depth and selected gas mixture. The limits allow a greater exposure when the person has not been exposed recently, and daily allowable dose decreases with an increase in consecutive days with exposure.<sup id="cite_ref-NOAA_Diving_Manual_2001_33-4" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> These values may not be fully supported by current data.<sup id="cite_ref-Arieli_2019_107-0" class="reference"><a href="#cite_note-Arieli_2019-107"><span class="cite-bracket">[</span>107<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <caption>NOAA REPEX limits for whole-body exposure in multiple day oxygen exposures<sup id="cite_ref-NOAA_Diving_Manual_2001_33-5" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Days of exposure</th> <th>average daily dose (OTU)</th> <th>total dose (OTU) </th></tr> <tr> <td>1</td> <td>850</td> <td>850 </td></tr> <tr> <td>2</td> <td>700</td> <td>1400 </td></tr> <tr> <td>3</td> <td>620</td> <td>1860 </td></tr> <tr> <td>4</td> <td>525</td> <td>2100 </td></tr> <tr> <td>5</td> <td>460</td> <td>2300 </td></tr> <tr> <td>6</td> <td>420</td> <td>2520 </td></tr> <tr> <td>7</td> <td>380</td> <td>2660 </td></tr> <tr> <td>8</td> <td>350</td> <td>2800 </td></tr> <tr> <td>9</td> <td>330</td> <td>2970 </td></tr> <tr> <td>10</td> <td>310</td> <td>3100 </td></tr> <tr> <td>11 to 30</td> <td>300</td> <td>as calculated </td></tr></tbody></table> <table class="wikitable"> <caption>Oxygen toxicity units per minute at varying partial pressure<sup id="cite_ref-NOAA_Diving_Manual_2001_33-6" class="reference"><a href="#cite_note-NOAA_Diving_Manual_2001-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>P<sub>O<sub>2</sub></sub> (atm)</th> <th>OTU per minute </th></tr> <tr> <td>0.50</td> <td>0.00 </td></tr> <tr> <td>0.55</td> <td>0.15 </td></tr> <tr> <td>0.60</td> <td>0.27 </td></tr> <tr> <td>0.65</td> <td>0.37 </td></tr> <tr> <td>0.70</td> <td>0.47 </td></tr> <tr> <td>0.75</td> <td>0.56 </td></tr> <tr> <td>0.80</td> <td>0.65 </td></tr> <tr> <td>0.85</td> <td>0.74 </td></tr> <tr> <td>0.90</td> <td>0.83 </td></tr> <tr> <td>0.95</td> <td>0.92 </td></tr> <tr> <td>1.00</td> <td>1.00 </td></tr> <tr> <td>1.05</td> <td>1.08 </td></tr> <tr> <td>1.10</td> <td>1.16 </td></tr> <tr> <td>1.15</td> <td>1.24 </td></tr> <tr> <td>1.20</td> <td>1.32 </td></tr> <tr> <td>1.25</td> <td>1.40 </td></tr> <tr> <td>1.30</td> <td>1.48 </td></tr> <tr> <td>1.35</td> <td>1.55 </td></tr> <tr> <td>1.40</td> <td>1.63 </td></tr> <tr> <td>1.45</td> <td>1.70 </td></tr> <tr> <td>1.50</td> <td>1.78 </td></tr> <tr> <td>1.55</td> <td>1.85 </td></tr> <tr> <td>1.60</td> <td>1.92 </td></tr> <tr> <td>1.65</td> <td>2.00 </td></tr> <tr> <td>1.70</td> <td>2.07 </td></tr> <tr> <td>1.75</td> <td>2.14 </td></tr> <tr> <td>1.80</td> <td>2.21 </td></tr> <tr> <td>1.85</td> <td>2.28 </td></tr> <tr> <td>1.90</td> <td>2.35 </td></tr> <tr> <td>1.95</td> <td>2.42 </td></tr> <tr> <td>2.00</td> <td>2.49 </td></tr></tbody></table> <p>A more recent proposal uses a simple power equation, Toxicity Index (TI) = t<sup>2</sup> × P<sub>O<sub>2</sub></sub><sup>c</sup>, where t is time and c is the power term. This was derived from the chemical reactions producing reactive oxygen or nitrogen species, and has been shown to give good predictions for CNS toxicity with c = 6.8 and for pulmonary toxicity for c = 4.57.<sup id="cite_ref-Arieli_2019_107-1" class="reference"><a href="#cite_note-Arieli_2019-107"><span class="cite-bracket">[</span>107<span class="cite-bracket">]</span></a></sup> </p><p>For pulmonary toxicity, time is in hours, and P<sub>O<sub>2</sub></sub> in atmospheres absolute, TI should be limited to 250. </p><p>For CNS toxicity, time is in minutes, P<sub>O<sub>2</sub></sub> in atmospheres absolute, and a TI of 26,108 indicates a 1% risk. </p> <div class="mw-heading mw-heading2"><h2 id="Prognosis">Prognosis</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=21" title="Edit section: Prognosis"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Although the convulsions caused by central nervous system oxygen toxicity may lead to incidental injury to the victim, it remained uncertain for many years whether damage to the nervous system following the seizure could occur and several studies searched for evidence of such damage. An overview of these studies by Bitterman in 2004 concluded that following removal of breathing gas containing high fractions of oxygen, no long-term neurological damage from the seizure remains.<sup id="cite_ref-Bitterman_21-3" class="reference"><a href="#cite_note-Bitterman-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FennRahn_108-0" class="reference"><a href="#cite_note-FennRahn-108"><span class="cite-bracket">[</span>108<span class="cite-bracket">]</span></a></sup> </p><p>The majority of infants who have survived following an incidence of bronchopulmonary dysplasia will eventually recover near-normal lung function, since lungs continue to grow during the first 5–7 years and the damage caused by bronchopulmonary dysplasia is to some extent reversible (even in adults). However, they are likely to be more susceptible to respiratory infections for the rest of their lives and the severity of later infections is often greater than that in their peers.<sup id="cite_ref-nih_bpd_WhatIs_109-0" class="reference"><a href="#cite_note-nih_bpd_WhatIs-109"><span class="cite-bracket">[</span>109<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-kidshealth_110-0" class="reference"><a href="#cite_note-kidshealth-110"><span class="cite-bracket">[</span>110<span class="cite-bracket">]</span></a></sup> </p><p>Retinopathy of prematurity (ROP) in infants frequently regresses without intervention and eyesight may be normal in later years. Where the disease has progressed to the stages requiring surgery, the outcomes are generally good for the treatment of stage 3 ROP, but are much worse for the later stages. Although surgery is usually successful in restoring the anatomy of the eye, damage to the nervous system by the progression of the disease leads to comparatively poorer results in restoring vision. The presence of other complicating diseases also reduces the likelihood of a favourable outcome.<sup id="cite_ref-FOOTNOTERegilloBrownFlynn1998190_111-0" class="reference"><a href="#cite_note-FOOTNOTERegilloBrownFlynn1998190-111"><span class="cite-bracket">[</span>111<span class="cite-bracket">]</span></a></sup> </p><p>Provision of supplementary oxygen remains of life-saving importance in critical care, and can increase survival in some chronic conditions, but hyperoxia and the formation of reactive oxygen species is involved in the pathogenesis of several life-threatening diseases. The toxic effects of hyperoxia are particularly prevalent in the pulmonary compartment, and cerebral and coronary circulations are at risk when vascular changes occur. Long-term hyperoxia harms the immune responses and susceptibility to infectious complications and tissue injury are increased.<sup id="cite_ref-Helmerhorst_et_al_2015_37-2" class="reference"><a href="#cite_note-Helmerhorst_et_al_2015-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Epidemiology">Epidemiology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=22" title="Edit section: Epidemiology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Incidence_of_ROP.svg" class="mw-file-description"><img alt="Percentage of severe visual impairment and blindness due to ROP in children in Schools for the Blind in different regions of the world: Europe 6–17%; Latin America 4.1–38.6%; Eastern Europe 25.9%; Asia 16.9%; Africa 10.6%." src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Incidence_of_ROP.svg/400px-Incidence_of_ROP.svg.png" decoding="async" width="400" height="320" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Incidence_of_ROP.svg/600px-Incidence_of_ROP.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/Incidence_of_ROP.svg/800px-Incidence_of_ROP.svg.png 2x" data-file-width="400" data-file-height="320" /></a><figcaption>Retinopathy of prematurity (ROP) in 1997 was more common in middle income countries where neonatal intensive care services were increasing; but greater awareness of the problem, leading to preventive measures, had not yet occurred.<sup id="cite_ref-Gilbert_36-2" class="reference"><a href="#cite_note-Gilbert-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup></figcaption></figure> <p>The incidence of central nervous system toxicity among divers has decreased since the Second World War, as protocols have developed to limit exposure and partial pressure of oxygen inspired. In 1947, Donald recommended limiting the depth allowed for breathing pure oxygen to 7.6 m (25 ft), which equates to an oxygen partial pressure of 1.8 bar (180 kPa).<sup id="cite_ref-FOOTNOTEDonald,_Part_II1947_112-0" class="reference"><a href="#cite_note-FOOTNOTEDonald,_Part_II1947-112"><span class="cite-bracket">[</span>112<span class="cite-bracket">]</span></a></sup> Over time this limit has been reduced, until today a limit of 1.4 bar (140 kPa) during a recreational dive and 1.6 bar (160 kPa) during shallow decompression stops is generally recommended,<sup id="cite_ref-FOOTNOTELang2001183_113-0" class="reference"><a href="#cite_note-FOOTNOTELang2001183-113"><span class="cite-bracket">[</span>113<span class="cite-bracket">]</span></a></sup> though military divers using oxygen rebreathers may operate to greater depths for limited periods, at greater risk.<sup id="cite_ref-Wingelaar_et_al_2017_114-0" class="reference"><a href="#cite_note-Wingelaar_et_al_2017-114"><span class="cite-bracket">[</span>114<span class="cite-bracket">]</span></a></sup> Oxygen toxicity has now become a rare occurrence other than when caused by equipment malfunction and human error. Historically, the U.S. Navy has refined its Navy Diving Manual air and mixed gas tables to reduce oxygen toxicity incidents. Between 1995 and 1999, reports showed 405 surface-supported dives using the helium–oxygen tables; of these, oxygen toxicity symptoms were observed on 6 dives (1.5%). As a result, the U.S. Navy in 2000 modified the schedules and conducted field tests of 150 dives, none of which produced symptoms of oxygen toxicity. Revised tables were published in 2001.<sup id="cite_ref-Gerth_115-0" class="reference"><a href="#cite_note-Gerth-115"><span class="cite-bracket">[</span>115<span class="cite-bracket">]</span></a></sup> </p><p>The variability in tolerance and other variable factors such as workload have resulted in the U.S. Navy abandoning screening for oxygen tolerance. Of the 6,250 oxygen-tolerance tests performed between 1976 and 1997, only 6 episodes of oxygen toxicity were observed (0.1%).<sup id="cite_ref-Gould_90-1" class="reference"><a href="#cite_note-Gould-90"><span class="cite-bracket">[</span>90<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid3705251_91-1" class="reference"><a href="#cite_note-pmid3705251-91"><span class="cite-bracket">[</span>91<span class="cite-bracket">]</span></a></sup> </p><p>Central nervous system oxygen toxicity among patients undergoing hyperbaric oxygen therapy is rare, and is influenced by a number of a factors: individual sensitivity and treatment protocol; and probably <a href="/wiki/Indication_(medicine)" title="Indication (medicine)">therapy indication</a> and equipment used. A study by Welslau in 1996 reported 16 incidents out of a population of 107,264 patients (0.015%), while Hampson and Atik in 2003 found a rate of 0.03%.<sup id="cite_ref-pmid15485078_116-0" class="reference"><a href="#cite_note-pmid15485078-116"><span class="cite-bracket">[</span>116<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid12964858_117-0" class="reference"><a href="#cite_note-pmid12964858-117"><span class="cite-bracket">[</span>117<span class="cite-bracket">]</span></a></sup> Yildiz, Ay and Qyrdedi, in a summary of 36,500 patient treatments between 1996 and 2003, reported only 3 oxygen toxicity incidents, giving a rate of 0.008%.<sup id="cite_ref-pmid15485078_116-1" class="reference"><a href="#cite_note-pmid15485078-116"><span class="cite-bracket">[</span>116<span class="cite-bracket">]</span></a></sup> A later review of over 80,000 patient treatments revealed an even lower rate: 0.0024%. The reduction in incidence may be partly due to use of a mask rather than a hood to deliver oxygen as there is less <a href="/wiki/Dead_space_(physiology)#Mechanical_dead_space" title="Dead space (physiology)">dead space</a> in a mask.<sup id="cite_ref-pmid15559001_118-0" class="reference"><a href="#cite_note-pmid15559001-118"><span class="cite-bracket">[</span>118<span class="cite-bracket">]</span></a></sup> </p><p>The overall risk of CNS toxicity may be as high as 1 in 2000 to 3000 treatments. but it varies with the pressure and may be as high as 1 in 200 at higher pressure treatment schedules of 2.8 to 3.0 ATA, or as low as 1 in 10,000 for schedules at 2 ATA or less.<sup id="cite_ref-Cooper_et_al_2022_40-3" class="reference"><a href="#cite_note-Cooper_et_al_2022-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </p><p>Bronchopulmonary dysplasia is among the most common complications of <a href="/wiki/Premature_birth" class="mw-redirect" title="Premature birth">prematurely born</a> infants and its incidence has grown as the survival of extremely premature infants has increased. Nevertheless, the severity has decreased as better management of supplemental oxygen has resulted in the disease now being related mainly to factors other than hyperoxia.<sup id="cite_ref-Bancalari_45-1" class="reference"><a href="#cite_note-Bancalari-45"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> </p><p>In 1997 a summary of studies of neonatal intensive care units in industrialised countries showed that up to 60% of <a href="/wiki/Low_birth_weight" title="Low birth weight">low birth weight</a> babies developed retinopathy of prematurity, which rose to 72% in extremely low birth weight babies, defined as less than 1 kg (2.2 lb) at birth. However, severe outcomes are much less frequent: for very low birth weight babies—those less than 1.5 kg (3.3 lb) at birth—the incidence of blindness was found to be no more than 8%.<sup id="cite_ref-Gilbert_36-3" class="reference"><a href="#cite_note-Gilbert-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </p><p>Administration of supplemental oxygen is extensively and effectively used in emergency and intensive care medicine, but the reactive oxygen species caused by excessive oxygenation tend to cause a vicious cycle of tissue injury, characterized by cell damage, cell death, and inflammation, mostly in the lungs, which can exacerbate problems of tissue oxygenation for which the supplemental oxygen was intended as a treatment. Similar problems can occur in oxygen therapy for chronic conditions which involve hypoxia. Careful titration of oxygen supply to minimise the excess to physiological need also reduces pulmonary hyperoxic exposure to the reasonably practicable minimum.<sup id="cite_ref-Helmerhorst_et_al_2015_37-3" class="reference"><a href="#cite_note-Helmerhorst_et_al_2015-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> The incidence of pulmonary symptoms of oxygen toxicity is about 5%, and some drugs can increase the risk, such as the chemotherapeutic agent bleomycin.<sup id="cite_ref-Cooper_et_al_2022_40-4" class="reference"><a href="#cite_note-Cooper_et_al_2022-40"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=23" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Paul_Bert.jpg" class="mw-file-description"><img alt="Photograph of a man, with receding hairline and grey moustache. He is dressed in a formal jacket and waistcoat, typical of Victorian fashion." src="//upload.wikimedia.org/wikipedia/en/thumb/b/bc/Paul_Bert.jpg/170px-Paul_Bert.jpg" decoding="async" width="170" height="230" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/b/bc/Paul_Bert.jpg/255px-Paul_Bert.jpg 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/b/bc/Paul_Bert.jpg/340px-Paul_Bert.jpg 2x" data-file-width="2544" data-file-height="3440" /></a><figcaption>Paul Bert, a French physiologist, first described oxygen toxicity in 1878. </figcaption></figure> <p>Central nervous system toxicity was first described by <a href="/wiki/Paul_Bert" title="Paul Bert">Paul Bert</a> in 1878.<sup id="cite_ref-Bert_119-0" class="reference"><a href="#cite_note-Bert-119"><span class="cite-bracket">[</span>119<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-BSAC_120-0" class="reference"><a href="#cite_note-BSAC-120"><span class="cite-bracket">[</span>120<span class="cite-bracket">]</span></a></sup> He showed that oxygen was toxic to insects, <a href="/wiki/Arachnids" class="mw-redirect" title="Arachnids">arachnids</a>, <a href="/wiki/Myriapoda" title="Myriapoda">myriapods</a>, molluscs, earthworms, fungi, germinating seeds, birds, and other animals. Central nervous system toxicity may be referred to as the "Paul Bert effect".<sup id="cite_ref-Patel_16-3" class="reference"><a href="#cite_note-Patel-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p><p>Pulmonary oxygen toxicity was first described by J. Lorrain Smith in 1899 when he noted central nervous system toxicity and discovered in experiments in mice and birds that 0.43 bar (43 kPa) had no effect but 0.75 bar (75 kPa) of oxygen was a pulmonary irritant.<sup id="cite_ref-Smith_32-1" class="reference"><a href="#cite_note-Smith-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> Pulmonary toxicity may be referred to as the "Lorrain Smith effect".<sup id="cite_ref-Patel_16-4" class="reference"><a href="#cite_note-Patel-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> The first recorded human exposure was undertaken in 1910 by Bornstein when two men breathed oxygen at 2.8 bar (280 kPa) for 30 minutes, while he went on to 48 minutes with no symptoms. In 1912, Bornstein developed cramps in his hands and legs while breathing oxygen at 2.8 bar (280 kPa) for 51 minutes.<sup id="cite_ref-Acott_3-1" class="reference"><a href="#cite_note-Acott-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Smith then went on to show that intermittent exposure to a breathing gas with less oxygen permitted the lungs to recover and delayed the onset of pulmonary toxicity.<sup id="cite_ref-Smith_32-2" class="reference"><a href="#cite_note-Smith-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Albert_R._Behnke" title="Albert R. Behnke">Albert R. Behnke</a> <i>et al.</i> in 1935 were the first to observe <a href="/wiki/Visual_field" title="Visual field">visual field</a> contraction (<a href="/wiki/Tunnel_vision" title="Tunnel vision">tunnel vision</a>) on dives between 1.0 bar (100 kPa) and 4.1 bar (410 kPa).<sup id="cite_ref-Behnke_Johnson_121-0" class="reference"><a href="#cite_note-Behnke_Johnson-121"><span class="cite-bracket">[</span>121<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Behnke_Forbes_122-0" class="reference"><a href="#cite_note-Behnke_Forbes-122"><span class="cite-bracket">[</span>122<span class="cite-bracket">]</span></a></sup> During World War II, Donald and Yarbrough <i>et al.</i> performed over 2,000 experiments on oxygen toxicity to support the initial use of closed circuit oxygen <a href="/wiki/Rebreather" title="Rebreather">rebreathers</a>.<sup id="cite_ref-NEDU47_46-1" class="reference"><a href="#cite_note-NEDU47-46"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTEDonald1992_123-0" class="reference"><a href="#cite_note-FOOTNOTEDonald1992-123"><span class="cite-bracket">[</span>123<span class="cite-bracket">]</span></a></sup> Naval divers in the early years of <a href="/wiki/Oxygen_rebreather" class="mw-redirect" title="Oxygen rebreather">oxygen rebreather</a> diving developed a mythology about a monster called "Oxygen Pete", who lurked in the bottom of the Admiralty Experimental Diving Unit "wet pot" (a water-filled <a href="/wiki/Hyperbaric_chamber" class="mw-redirect" title="Hyperbaric chamber">hyperbaric chamber</a>) to catch unwary divers. They called having an oxygen toxicity attack "getting a Pete".<sup id="cite_ref-pete_124-0" class="reference"><a href="#cite_note-pete-124"><span class="cite-bracket">[</span>124<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-davis1955_125-0" class="reference"><a href="#cite_note-davis1955-125"><span class="cite-bracket">[</span>125<span class="cite-bracket">]</span></a></sup> </p><p>In the decade following World War II, <a href="/wiki/Christian_J._Lambertsen" title="Christian J. Lambertsen">Lambertsen</a> <i>et al.</i> made further discoveries on the effects of breathing oxygen under pressure and methods of prevention.<sup id="cite_ref-Penn_126-0" class="reference"><a href="#cite_note-Penn-126"><span class="cite-bracket">[</span>126<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Vann_2004_127-0" class="reference"><a href="#cite_note-Vann_2004-127"><span class="cite-bracket">[</span>127<span class="cite-bracket">]</span></a></sup> Their work on intermittent exposures for extension of oxygen tolerance and on a model for prediction of pulmonary oxygen toxicity based on pulmonary function are key documents in the development of <a href="/wiki/Standard_operating_procedure" title="Standard operating procedure">standard operating procedures</a> when breathing increased pressures of oxygen.<sup id="cite_ref-FOOTNOTEClarkLambertsen1970_128-0" class="reference"><a href="#cite_note-FOOTNOTEClarkLambertsen1970-128"><span class="cite-bracket">[</span>128<span class="cite-bracket">]</span></a></sup> Lambertsen's work showing the effect of carbon dioxide in decreasing time to onset of central nervous system symptoms has influenced work from current exposure <a href="/wiki/Guidelines" class="mw-redirect" title="Guidelines">guidelines</a> to future <a href="/wiki/Scuba_set" title="Scuba set">breathing apparatus</a> design.<sup id="cite_ref-rebreather2.0_23-1" class="reference"><a href="#cite_note-rebreather2.0-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-padi_24-3" class="reference"><a href="#cite_note-padi-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FOOTNOTELang200181–86_129-0" class="reference"><a href="#cite_note-FOOTNOTELang200181–86-129"><span class="cite-bracket">[</span>129<span class="cite-bracket">]</span></a></sup> </p><p>Retinopathy of prematurity was not observed before World War II, but with the availability of supplemental oxygen in the decade following, it rapidly became one of the principal causes of infant blindness in developed countries. By 1960 the use of oxygen had become identified as a risk factor and its administration restricted. The resulting fall in retinopathy of prematurity was accompanied by a rise in infant mortality and <a href="/wiki/Hypoxia_(medical)" class="mw-redirect" title="Hypoxia (medical)">hypoxia</a>-related complications. Since then, more sophisticated monitoring and diagnosis have established protocols for oxygen use which aim to balance between hypoxic conditions and problems of retinopathy of prematurity.<sup id="cite_ref-Gilbert_36-4" class="reference"><a href="#cite_note-Gilbert-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> </p><p>Bronchopulmonary dysplasia was first described by Northway in 1967, who outlined the conditions that would lead to the diagnosis.<sup id="cite_ref-pmid5334613_130-0" class="reference"><a href="#cite_note-pmid5334613-130"><span class="cite-bracket">[</span>130<span class="cite-bracket">]</span></a></sup> This was later expanded by Bancalari and in 1988 by Shennan, who suggested the need for supplemental oxygen at 36 weeks could predict long-term outcomes.<sup id="cite_ref-pmid3174313_131-0" class="reference"><a href="#cite_note-pmid3174313-131"><span class="cite-bracket">[</span>131<span class="cite-bracket">]</span></a></sup> Nevertheless, Palta <i>et al.</i> in 1998 concluded that <a href="/wiki/Radiographic" class="mw-redirect" title="Radiographic">radiographic</a> evidence was the most accurate predictor of long-term effects.<sup id="cite_ref-pmid9470001_132-0" class="reference"><a href="#cite_note-pmid9470001-132"><span class="cite-bracket">[</span>132<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Robert_W_Hamilton_Jr.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Robert_W_Hamilton_Jr.png/170px-Robert_W_Hamilton_Jr.png" decoding="async" width="170" height="254" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Robert_W_Hamilton_Jr.png/255px-Robert_W_Hamilton_Jr.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/06/Robert_W_Hamilton_Jr.png/340px-Robert_W_Hamilton_Jr.png 2x" data-file-width="397" data-file-height="593" /></a><figcaption><a href="/wiki/Robert_William_Hamilton_Jr." title="Robert William Hamilton Jr.">Robert W. Hamilton Jr</a>, lead researcher on tolerable repetitive exposure limits at NOAA.</figcaption></figure> <p>Bitterman <i>et al.</i> in 1986 and 1995 showed that <a href="/wiki/Lighting" title="Lighting">darkness</a> and <a href="/wiki/Caffeine" title="Caffeine">caffeine</a> would delay the onset of changes to <a href="/wiki/Electroencephalography" title="Electroencephalography">brain electrical activity</a> in rats.<sup id="cite_ref-pmid3705247_25-1" class="reference"><a href="#cite_note-pmid3705247-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid8574677_26-1" class="reference"><a href="#cite_note-pmid8574677-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> In the years since, research on central nervous system toxicity has centred on methods of prevention and safe extension of tolerance.<sup id="cite_ref-natoliMS_133-0" class="reference"><a href="#cite_note-natoliMS-133"><span class="cite-bracket">[</span>133<span class="cite-bracket">]</span></a></sup> Sensitivity to central nervous system oxygen toxicity has been shown to be affected by factors such as <a href="/wiki/Circadian_rhythm" title="Circadian rhythm">circadian rhythm</a>, drugs, age, and gender.<sup id="cite_ref-pmid5130131_134-0" class="reference"><a href="#cite_note-pmid5130131-134"><span class="cite-bracket">[</span>134<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid15622741_135-0" class="reference"><a href="#cite_note-pmid15622741-135"><span class="cite-bracket">[</span>135<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid5061633_136-0" class="reference"><a href="#cite_note-pmid5061633-136"><span class="cite-bracket">[</span>136<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid17672171_137-0" class="reference"><a href="#cite_note-pmid17672171-137"><span class="cite-bracket">[</span>137<span class="cite-bracket">]</span></a></sup> In 1988, Hamilton <i>et al.</i> wrote procedures for the National Oceanic and Atmospheric Administration to establish oxygen exposure limits for <a href="/wiki/Underwater_habitat" title="Underwater habitat">habitat</a> operations.<sup id="cite_ref-repex1_85-1" class="reference"><a href="#cite_note-repex1-85"><span class="cite-bracket">[</span>85<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-repex2_86-1" class="reference"><a href="#cite_note-repex2-86"><span class="cite-bracket">[</span>86<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-spums_87-1" class="reference"><a href="#cite_note-spums-87"><span class="cite-bracket">[</span>87<span class="cite-bracket">]</span></a></sup> Even today, models for the prediction of pulmonary oxygen toxicity do not explain all the results of exposure to high partial pressures of oxygen.<sup id="cite_ref-Shykoff2007_138-0" class="reference"><a href="#cite_note-Shykoff2007-138"><span class="cite-bracket">[</span>138<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Society_and_culture">Society and culture</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=24" title="Edit section: Society and culture"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Nitrox" title="Nitrox">Nitrox</a> and <a href="/wiki/Oxygen_bar" title="Oxygen bar">Oxygen bar</a></div> <p><a href="/wiki/Recreational_diving" title="Recreational diving">Recreational scuba divers</a> commonly breathe <a href="/wiki/Nitrox" title="Nitrox">nitrox</a> containing up to 40% oxygen, while <a href="/wiki/Technical_diving" title="Technical diving">technical divers</a> use pure oxygen or nitrox containing up to 80% oxygen to accelerate decompression. Divers who breathe oxygen fractions greater than of air (21%) need to be educated on the dangers of oxygen toxicity and how to manage the risk.<sup id="cite_ref-FOOTNOTELang2001195_76-3" class="reference"><a href="#cite_note-FOOTNOTELang2001195-76"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> To buy nitrox, a diver may be required to show evidence of relevant qualification.<sup id="cite_ref-BSACnitrox_139-0" class="reference"><a href="#cite_note-BSACnitrox-139"><span class="cite-bracket">[</span>139<span class="cite-bracket">]</span></a></sup> </p><p>Since the late 1990s the recreational use of oxygen has been promoted by oxygen bars, where customers breathe oxygen through a <a href="/wiki/Nasal_cannula" title="Nasal cannula">nasal cannula</a>. Claims have been made that this reduces stress, increases energy, and lessens the effects of hangovers and headaches, despite the lack of any scientific evidence to support them.<sup id="cite_ref-Bren_140-0" class="reference"><a href="#cite_note-Bren-140"><span class="cite-bracket">[</span>140<span class="cite-bracket">]</span></a></sup> There are also devices on sale that offer "oxygen massage" and "oxygen detoxification" with claims of removing body toxins and reducing body fat.<sup id="cite_ref-o2planet_141-0" class="reference"><a href="#cite_note-o2planet-141"><span class="cite-bracket">[</span>141<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/American_Lung_Association" title="American Lung Association">American Lung Association</a> has stated "there is no evidence that oxygen at the low flow levels used in bars can be dangerous to a normal person's health", but the U.S. <a href="/wiki/Center_for_Drug_Evaluation_and_Research" title="Center for Drug Evaluation and Research">Center for Drug Evaluation and Research</a> cautions that people with heart or lung disease need their supplementary oxygen carefully regulated and should not use oxygen bars.<sup id="cite_ref-Bren_140-1" class="reference"><a href="#cite_note-Bren-140"><span class="cite-bracket">[</span>140<span class="cite-bracket">]</span></a></sup> </p><p>Victorian society had a fascination for the rapidly expanding field of science. In "<a href="/wiki/Dr._Ox%27s_Experiment" title="Dr. Ox's Experiment">Dr. Ox's Experiment</a>", a short story written by <a href="/wiki/Jules_Verne" title="Jules Verne">Jules Verne</a> in 1872, the eponymous doctor uses <a href="/wiki/Electrolysis_of_water" title="Electrolysis of water">electrolysis of water</a> to separate oxygen and hydrogen. He then pumps the pure oxygen throughout the town of Quiquendone, causing the normally tranquil inhabitants and their animals to become aggressive and plants to grow rapidly. An explosion of the hydrogen and oxygen in Dr Ox's factory brings his experiment to an end. Verne summarised his story by explaining that the effects of oxygen described in the tale were his own invention (they are not in any way supported by empirical evidence).<sup id="cite_ref-Verne_Dr_Ox_142-0" class="reference"><a href="#cite_note-Verne_Dr_Ox-142"><span class="cite-bracket">[</span>142<span class="cite-bracket">]</span></a></sup> There is also a brief episode of oxygen intoxication in his "<a href="/wiki/From_the_Earth_to_the_Moon" title="From the Earth to the Moon">From the Earth to the Moon</a>".<sup id="cite_ref-Verne_1877_143-0" class="reference"><a href="#cite_note-Verne_1877-143"><span class="cite-bracket">[</span>143<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=25" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Effect_of_oxygen_on_chronic_obstructive_pulmonary_disease" title="Effect of oxygen on chronic obstructive pulmonary disease">Effect of oxygen on chronic obstructive pulmonary disease</a></li> <li><a href="/wiki/Nitrogen_narcosis" title="Nitrogen narcosis">Nitrogen narcosis</a> – Reversible narcotic effects of respiratory nitrogen at elevated partial pressures</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=26" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-FOOTNOTEDonald,_Part_I1947-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEDonald,_Part_I1947_1-0"><sup><i><b>a</b></i></sup></a> <a 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"The role of antioxidant nutrients in preventing hyperbaric oxygen damage to the retina". <i>Free Radical Biology & Medicine</i>. <b>6</b> (5): 505–12. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2F0891-5849%2889%2990043-9">10.1016/0891-5849(89)90043-9</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/2744583">2744583</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Free+Radical+Biology+%26+Medicine&rft.atitle=The+role+of+antioxidant+nutrients+in+preventing+hyperbaric+oxygen+damage+to+the+retina&rft.volume=6&rft.issue=5&rft.pages=505-12&rft.date=1989&rft_id=info%3Adoi%2F10.1016%2F0891-5849%2889%2990043-9&rft_id=info%3Apmid%2F2744583&rft.aulast=Stone&rft.aufirst=WL&rft.au=Henderson%2C+RA&rft.au=Howard%2C+GH&rft.au=Hollis%2C+AL&rft.au=Payne%2C+PH&rft.au=Scott%2C+RL&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-rcpch-98"><span class="mw-cite-backlink"><b><a href="#cite_ref-rcpch_98-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120218231151/http://www.rcophth.ac.uk/docs/publications/ROP_Guideline_-_Masterv11-ARF-2.pdf">"UK Retinopathy of Prematurity Guideline"</a> <span class="cs1-format">(PDF)</span>. Royal College of Paediatrics and Child Health, Royal College of Ophthalmologists & British Association of Perinatal Medicine. 2007. p. i. Archived from <a rel="nofollow" class="external text" href="http://www.rcophth.ac.uk/docs/publications/ROP_Guideline_-_Masterv11-ARF-2.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 18 February 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">2 April</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=UK+Retinopathy+of+Prematurity+Guideline&rft.pages=i&rft.pub=Royal+College+of+Paediatrics+and+Child+Health%2C+Royal+College+of+Ophthalmologists+%26+British+Association+of+Perinatal+Medicine&rft.date=2007&rft_id=http%3A%2F%2Fwww.rcophth.ac.uk%2Fdocs%2Fpublications%2FROP_Guideline_-_Masterv11-ARF-2.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-Silverman-99"><span class="mw-cite-backlink"><b><a href="#cite_ref-Silverman_99-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSilverman1980" class="citation book cs1">Silverman, William (1980). <a rel="nofollow" class="external text" href="http://www.neonatology.org/classics/parable/"><i>Retrolental Fibroplasia: A Modern Parable</i></a>. Grune & Stratton. pp. 39, 41, 143. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8089-1264-4" title="Special:BookSources/978-0-8089-1264-4"><bdi>978-0-8089-1264-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Retrolental+Fibroplasia%3A+A+Modern+Parable&rft.pages=39%2C+41%2C+143&rft.pub=Grune+%26+Stratton&rft.date=1980&rft.isbn=978-0-8089-1264-4&rft.aulast=Silverman&rft.aufirst=William&rft_id=http%3A%2F%2Fwww.neonatology.org%2Fclassics%2Fparable%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-pmid2730484-100"><span class="mw-cite-backlink">^ <a href="#cite_ref-pmid2730484_100-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-pmid2730484_100-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWebbOlsonKrutzDixon1989" class="citation journal cs1">Webb, James T; Olson, RM; Krutz, RW; Dixon, G; Barnicott, PT (1989). 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RebreatherWorld. Archived from <a rel="nofollow" class="external text" href="http://www.rebreatherworld.com/rebreather-accidents-incidents/16705-standardizing-ccr-rescue-skills-3.html#post163661">the original</a> on 3 March 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">26 May</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Standardizing+CCR+rescue+skills&rft.pub=RebreatherWorld&rft.date=2008-01-20&rft.aulast=Mitchell&rft.aufirst=Simon+J&rft_id=http%3A%2F%2Fwww.rebreatherworld.com%2Frebreather-accidents-incidents%2F16705-standardizing-ccr-rescue-skills-3.html%23post163661&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> This forum post's author chairs the diving committee of the Undersea and Hyperbaric Medical Society.</span> </li> <li id="cite_note-DANoxtox-103"><span class="mw-cite-backlink"><b><a href="#cite_ref-DANoxtox_103-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFThalmann2003" class="citation web cs1">Thalmann, Edward D (2 December 2003). <a rel="nofollow" class="external text" href="http://www.diversalertnetwork.org/medical/articles/OXTOX_If_You_Dive_Nitrox_You_Should_Know_About_OXTOX">"OXTOX: If You Dive Nitrox You Should Know About OXTOX"</a>. 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Retrieved <span class="nowrap">11 October</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=OXTOX%3A+If+You+Dive+Nitrox+You+Should+Know+About+OXTOX&rft.pub=Divers+Alert+Network&rft.date=2003-12-02&rft.aulast=Thalmann&rft.aufirst=Edward+D&rft_id=http%3A%2F%2Fwww.diversalertnetwork.org%2Fmedical%2Farticles%2FOXTOX_If_You_Dive_Nitrox_You_Should_Know_About_OXTOX&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> – Section "What do you do if oxygen toxicity or a convulsion happens?"</span> </li> <li id="cite_note-FOOTNOTEU.S._Navy_Diving_Manual201137–39vol._2,_ch._9-104"><span class="mw-cite-backlink"><b><a href="#cite_ref-FOOTNOTEU.S._Navy_Diving_Manual201137–39vol._2,_ch._9_104-0">^</a></b></span> <span class="reference-text"><a href="#CITEREFU.S._Navy_Diving_Manual2011">U.S. Navy Diving Manual 2011</a>, pp. 37–39, vol. 2, ch. 9.</span> </li> <li id="cite_note-MPBPD-105"><span class="mw-cite-backlink"><b><a href="#cite_ref-MPBPD_105-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.nlm.nih.gov/medlineplus/ency/article/001088.htm">"NIH MedlinePlus: Bronchopulmonary dysplasia"</a>. 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Retrieved <span class="nowrap">15 September</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Ocean+Diver+Nitrox+Workshop&rft.pages=6&rft.pub=British+Sub-Aqua+Club&rft.date=2006&rft.au=British+Sub-Aqua+Club&rft_id=http%3A%2F%2Fwww.bsac.org%2Fuploads%2Fmoved%2Fdocuments%2FResources%2FNitrox%2FOD_Nitrox_Workshop_Student_Workbook_V00bh.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-Bren-140"><span class="mw-cite-backlink">^ <a href="#cite_ref-Bren_140-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Bren_140-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBren2002" class="citation magazine cs1">Bren, Linda (November–December 2002). <a rel="nofollow" class="external text" href="https://permanent.access.gpo.gov/lps1609/www.fda.gov/fdac/features/2002/602_air.html">"Oxygen Bars: Is a Breath of Fresh Air Worth It?"</a>. <i>FDA Consumer</i>. Vol. 36, no. 6. pp. 9–11. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12523293">12523293</a><span class="reference-accessdate">. Retrieved <span class="nowrap">25 March</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=FDA+Consumer&rft.atitle=Oxygen+Bars%3A+Is+a+Breath+of+Fresh+Air+Worth+It%3F&rft.volume=36&rft.issue=6&rft.pages=9-11&rft.date=2002-11%2F2002-12&rft_id=info%3Apmid%2F12523293&rft.aulast=Bren&rft.aufirst=Linda&rft_id=https%3A%2F%2Fpermanent.access.gpo.gov%2Flps1609%2Fwww.fda.gov%2Ffdac%2Ffeatures%2F2002%2F602_air.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-o2planet-141"><span class="mw-cite-backlink"><b><a href="#cite_ref-o2planet_141-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060415175719/http://www.o2planet.com/HTML/fitness.html">"O2 Planet – Exercise and Fitness Equipment"</a>. O2Planet LLC. 2006. Archived from <a rel="nofollow" class="external text" href="http://www.o2planet.com/HTML/fitness.html">the original</a> on 15 April 2006<span class="reference-accessdate">. Retrieved <span class="nowrap">21 October</span> 2008</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=O2+Planet+%E2%80%93+Exercise+and+Fitness+Equipment&rft.pub=O2Planet+LLC&rft.date=2006&rft_id=http%3A%2F%2Fwww.o2planet.com%2FHTML%2Ffitness.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></span> </li> <li id="cite_note-Verne_Dr_Ox-142"><span class="mw-cite-backlink"><b><a href="#cite_ref-Verne_Dr_Ox_142-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVerne2004" class="citation book cs1"><a href="/wiki/Jules_Verne" title="Jules Verne">Verne, Jules</a> (2004) [1872]. <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/fantasyofdrox0000vern"><i>A Fantasy of Dr Ox</i></a></span>. Hesperus Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-84391-067-1" title="Special:BookSources/978-1-84391-067-1"><bdi>978-1-84391-067-1</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">8 May</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Fantasy+of+Dr+Ox&rft.pub=Hesperus+Press&rft.date=2004&rft.isbn=978-1-84391-067-1&rft.aulast=Verne&rft.aufirst=Jules&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Ffantasyofdrox0000vern&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> Translated from French</span> </li> <li id="cite_note-Verne_1877-143"><span class="mw-cite-backlink"><b><a href="#cite_ref-Verne_1877_143-0">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVerne1877" class="citation book cs1">Verne, Jules (1877) [1870]. "VIII" [At seventy-eight thousand one hundred and fourteen leagues]. <a rel="nofollow" class="external text" href="https://www.gutenberg.org/ebooks/12901"><i>Autour de la Lune</i></a> [<i>Round the Moon</i>]. London: Ward Lock. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/2-253-00587-8" title="Special:BookSources/2-253-00587-8"><bdi>2-253-00587-8</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">2 September</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=VIII&rft.btitle=Autour+de+la+Lune&rft.place=London&rft.pub=Ward+Lock&rft.date=1877&rft.isbn=2-253-00587-8&rft.aulast=Verne&rft.aufirst=Jules&rft_id=https%3A%2F%2Fwww.gutenberg.org%2Febooks%2F12901&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> Translated from French</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Sources">Sources</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=27" title="Edit section: Sources"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFClarkThom2003" class="citation book cs1">Clark, James M; Thom, Stephen R (2003). "Oxygen under pressure". In Brubakk, Alf O; Neuman, Tom S (eds.). <i>Bennett and Elliott's physiology and medicine of diving</i> (5th ed.). United States: Saunders. pp. 358–418. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7020-2571-6" title="Special:BookSources/978-0-7020-2571-6"><bdi>978-0-7020-2571-6</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/51607923">51607923</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Oxygen+under+pressure&rft.btitle=Bennett+and+Elliott%27s+physiology+and+medicine+of+diving&rft.place=United+States&rft.pages=358-418&rft.edition=5th&rft.pub=Saunders&rft.date=2003&rft_id=info%3Aoclcnum%2F51607923&rft.isbn=978-0-7020-2571-6&rft.aulast=Clark&rft.aufirst=James+M&rft.au=Thom%2C+Stephen+R&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFClarkLambertsen1970" class="citation journal cs1">Clark, John M; Lambertsen, Christian J (1970). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081007194143/http://archive.rubicon-foundation.org/3863">"Pulmonary oxygen tolerance in man and derivation of pulmonary oxygen tolerance curves"</a>. <i>IFEM Report No. 1-70</i>. Philadelphia, PA: Environmental Biomedical Stress Data Center, Institute for Environmental Medicine, University of Pennsylvania Medical Center. Archived from the original on 7 October 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">29 April</span> 2008</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=IFEM+Report+No.+1-70&rft.atitle=Pulmonary+oxygen+tolerance+in+man+and+derivation+of+pulmonary+oxygen+tolerance+curves&rft.date=1970&rft.aulast=Clark&rft.aufirst=John+M&rft.au=Lambertsen%2C+Christian+J&rft_id=http%3A%2F%2Farchive.rubicon-foundation.org%2F3863&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_journal" title="Template:Cite journal">cite journal</a>}}</code>: CS1 maint: unfit URL (<a href="/wiki/Category:CS1_maint:_unfit_URL" title="Category:CS1 maint: unfit URL">link</a>)</span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDonald,_Part_I1947" class="citation journal cs1">Donald, Kenneth W (1947). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2053251">"Oxygen Poisoning in Man: Part I"</a>. <i>British Medical Journal</i>. <b>1</b> (4506): 667–72. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1136%2Fbmj.1.4506.667">10.1136/bmj.1.4506.667</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2053251">2053251</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20248086">20248086</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=British+Medical+Journal&rft.atitle=Oxygen+Poisoning+in+Man%3A+Part+I&rft.volume=1&rft.issue=4506&rft.pages=667-72&rft.date=1947&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2053251%23id-name%3DPMC&rft_id=info%3Apmid%2F20248086&rft_id=info%3Adoi%2F10.1136%2Fbmj.1.4506.667&rft.aulast=Donald&rft.aufirst=Kenneth+W&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2053251&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDonald,_Part_II1947" class="citation journal cs1">Donald, Kenneth W (1947). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2053400">"Oxygen Poisoning in Man: Part II"</a>. <i>British Medical Journal</i>. <b>1</b> (4507): 712–17. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1136%2Fbmj.1.4507.712">10.1136/bmj.1.4507.712</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2053400">2053400</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20248096">20248096</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=British+Medical+Journal&rft.atitle=Oxygen+Poisoning+in+Man%3A+Part+II&rft.volume=1&rft.issue=4507&rft.pages=712-17&rft.date=1947&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2053400%23id-name%3DPMC&rft_id=info%3Apmid%2F20248096&rft_id=info%3Adoi%2F10.1136%2Fbmj.1.4507.712&rft.aulast=Donald&rft.aufirst=Kenneth+W&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2053400&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> <ul><li>Revised version of Donald's articles also available as:</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDonald1992" class="citation book cs1">Donald, Kenneth W (1992). <i>Oxygen and the diver</i>. UK: Harley Swan, 237 pages. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-85421-176-5" title="Special:BookSources/1-85421-176-5"><bdi>1-85421-176-5</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/26894235">26894235</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Oxygen+and+the+diver&rft.place=UK&rft.pub=Harley+Swan%2C+237+pages&rft.date=1992&rft_id=info%3Aoclcnum%2F26894235&rft.isbn=1-85421-176-5&rft.aulast=Donald&rft.aufirst=Kenneth+W&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li></ul></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHamiltonThalmann2003" class="citation book cs1">Hamilton, Robert W; Thalmann, Edward D (2003). "Decompression practice". In Brubakk, Alf O; Neuman, Tom S (eds.). <i>Bennett and Elliott's physiology and medicine of diving</i> (5th ed.). United States: Saunders. pp. 475–79. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7020-2571-6" title="Special:BookSources/978-0-7020-2571-6"><bdi>978-0-7020-2571-6</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/51607923">51607923</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Decompression+practice&rft.btitle=Bennett+and+Elliott%27s+physiology+and+medicine+of+diving&rft.place=United+States&rft.pages=475-79&rft.edition=5th&rft.pub=Saunders&rft.date=2003&rft_id=info%3Aoclcnum%2F51607923&rft.isbn=978-0-7020-2571-6&rft.aulast=Hamilton&rft.aufirst=Robert+W&rft.au=Thalmann%2C+Edward+D&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLang2001" class="citation book cs1">Lang, Michael A, ed. (2001). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110916013500/http://archive.rubicon-foundation.org/4855"><i>DAN nitrox workshop proceedings</i></a>. Durham, NC: Divers Alert Network, 197 pages. Archived from the original on 16 September 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">20 September</span> 2008</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=DAN+nitrox+workshop+proceedings&rft.place=Durham%2C+NC&rft.pub=Divers+Alert+Network%2C+197+pages&rft.date=2001&rft_id=http%3A%2F%2Farchive.rubicon-foundation.org%2F4855&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: unfit URL (<a href="/wiki/Category:CS1_maint:_unfit_URL" title="Category:CS1 maint: unfit URL">link</a>)</span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRegilloBrownFlynn1998" class="citation book cs1">Regillo, Carl D; Brown, Gary C; Flynn, Harry W (1998). <i>Vitreoretinal Disease: The Essentials</i>. New York: Thieme, 693 pages. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-86577-761-3" title="Special:BookSources/978-0-86577-761-3"><bdi>978-0-86577-761-3</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/39170393">39170393</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Vitreoretinal+Disease%3A+The+Essentials&rft.place=New+York&rft.pub=Thieme%2C+693+pages&rft.date=1998&rft_id=info%3Aoclcnum%2F39170393&rft.isbn=978-0-86577-761-3&rft.aulast=Regillo&rft.aufirst=Carl+D&rft.au=Brown%2C+Gary+C&rft.au=Flynn%2C+Harry+W&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFU.S._Navy_Diving_Manual2011" class="citation book cs1">U.S. Navy Supervisor of Diving (2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141210095431/http://www.supsalv.org/pdf/Dive%20Manual%20Rev%206%20with%20Chg%20A.pdf"><i>U.S. Navy Diving Manual</i></a> <span class="cs1-format">(PDF)</span>. SS521-AG-PRO-010 0910-LP-106-0957, revision 6 with Change A entered. U.S. Naval Sea Systems Command. Archived from <a rel="nofollow" class="external text" href="http://supsalv.org/pdf/Dive%20Manual%20Rev%206%20with%20Chg%20A.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 10 December 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">29 January</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=U.S.+Navy+Diving+Manual&rft.series=SS521-AG-PRO-010+0910-LP-106-0957%2C+revision+6+with+Change+A+entered&rft.pub=U.S.+Naval+Sea+Systems+Command&rft.date=2011&rft.au=U.S.+Navy+Supervisor+of+Diving&rft_id=http%3A%2F%2Fsupsalv.org%2Fpdf%2FDive%2520Manual%2520Rev%25206%2520with%2520Chg%2520A.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=28" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLamb1999" class="citation book cs1">Lamb, John S. (1999). <i>The Practice of Oxygen Measurement for Divers</i>. Flagstaff: Best Publishing, 120 pages. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-941332-68-3" title="Special:BookSources/0-941332-68-3"><bdi>0-941332-68-3</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/44018369">44018369</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Practice+of+Oxygen+Measurement+for+Divers&rft.place=Flagstaff&rft.pub=Best+Publishing%2C+120+pages&rft.date=1999&rft_id=info%3Aoclcnum%2F44018369&rft.isbn=0-941332-68-3&rft.aulast=Lamb&rft.aufirst=John+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLippmann,_JohnBugg,_Stan1993" class="citation book cs1">Lippmann, John; Bugg, Stan (1993). <i>The Diving Emergency Handbook</i>. Teddington, UK: Underwater World Publications. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-946020-18-3" title="Special:BookSources/0-946020-18-3"><bdi>0-946020-18-3</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/52056845">52056845</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Diving+Emergency+Handbook&rft.place=Teddington%2C+UK&rft.pub=Underwater+World+Publications&rft.date=1993&rft_id=info%3Aoclcnum%2F52056845&rft.isbn=0-946020-18-3&rft.au=Lippmann%2C+John&rft.au=Bugg%2C+Stan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLippmann,_JohnMitchell,_Simon2005" class="citation book cs1">Lippmann, John; Mitchell, Simon (2005). "Oxygen". <i>Deeper into Diving</i> (2nd ed.). Victoria, Australia: J.L. Publications. pp. 121–24. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-9752290-1-X" title="Special:BookSources/0-9752290-1-X"><bdi>0-9752290-1-X</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/66524750">66524750</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Oxygen&rft.btitle=Deeper+into+Diving&rft.place=Victoria%2C+Australia&rft.pages=121-24&rft.edition=2nd&rft.pub=J.L.+Publications&rft.date=2005&rft_id=info%3Aoclcnum%2F66524750&rft.isbn=0-9752290-1-X&rft.au=Lippmann%2C+John&rft.au=Mitchell%2C+Simon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Oxygen_toxicity&action=edit&section=29" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The following external sites contain resources specific to particular topics: </p> <ul><li><a rel="nofollow" class="external text" href="http://www.diversalertnetwork.org/FastAccess/2008TechnicalDiving.aspx">2008 Divers Alert Network Technical Diving Conference</a> – Video of "Oxygen Toxicity" lecture by Dr. Richard Vann (free download, mp4, 86MB).</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNosek" class="citation book cs1">Nosek, Thomas M. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160324124828/http://humanphysiology.tuars.com/program/section4/4ch7/s4ch7_7.htm">"Section 4/4ch7/s4ch7_7"</a>. <i>Essentials of Human Physiology</i>. Archived from <a rel="nofollow" class="external text" href="http://humanphysiology.tuars.com/program/section4/4ch7/s4ch7_7.htm">the original</a> on 24 March 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Section+4%2F4ch7%2Fs4ch7_7&rft.btitle=Essentials+of+Human+Physiology&rft.aulast=Nosek&rft.aufirst=Thomas+M.&rft_id=http%3A%2F%2Fhumanphysiology.tuars.com%2Fprogram%2Fsection4%2F4ch7%2Fs4ch7_7.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> – Discussion of the effects of breathing oxygen on the respiratory system.</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRajiah2009" class="citation web cs1">Rajiah, Prabhakar (11 March 2009). <a rel="nofollow" class="external text" href="http://emedicine.medscape.com/article/406564-overview">"Bronchopulmonary Dysplasia"</a>. <i>eMedicine</i>. WebMD<span class="reference-accessdate">. Retrieved <span class="nowrap">29 June</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=eMedicine&rft.atitle=Bronchopulmonary+Dysplasia&rft.date=2009-03-11&rft.aulast=Rajiah&rft.aufirst=Prabhakar&rft_id=http%3A%2F%2Femedicine.medscape.com%2Farticle%2F406564-overview&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOxygen+toxicity" class="Z3988"></span> – Clinical overview with references.</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output 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dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style></div><div role="navigation" class="navbox" aria-label="Navbox" style="width:100%; margin:0.5em 0 0.5em 0;;padding:3px"><table class="nowraplinks navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;background: #EAECF0;color:black;">Classification</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><div style="position:relative; float:right; font-size:0.8em;"><a href="https://www.wikidata.org/wiki/Q125223" class="extiw" title="d:Q125223">D</a></div><div class="hlist" style="text-align:left;"><ul><li><b><a href="/wiki/International_Statistical_Classification_of_Diseases_and_Related_Health_Problems" class="mw-redirect" title="International Statistical Classification of Diseases and Related Health Problems">ICD</a>-<a href="/wiki/ICD-10" title="ICD-10">10</a></b>: <a rel="nofollow" class="external text" href="https://icd.who.int/browse10/2019/en#/T59.8">T59.8</a></li><li><b><a href="/wiki/International_Statistical_Classification_of_Diseases_and_Related_Health_Problems" class="mw-redirect" title="International Statistical Classification of Diseases and Related Health Problems">ICD</a>-<a href="/wiki/List_of_ICD-9_codes" title="List of ICD-9 codes">9-CM</a></b>: <a rel="nofollow" class="external text" href="http://www.icd9data.com/getICD9Code.ashx?icd9=987.8">987.8</a></li><li><b><a href="/wiki/Medical_Subject_Headings" title="Medical Subject Headings">MeSH</a></b>: <a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?ui=D018496">D018496</a></li></ul></div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Respiratory_physiology" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Respiratory_physiology" title="Template:Respiratory physiology"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Respiratory_physiology" title="Template talk:Respiratory physiology"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Respiratory_physiology" 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title="Respirometer">respirometer</a></li> <li><a href="/wiki/Pulmonary_surfactant" title="Pulmonary surfactant">pulmonary surfactant</a></li> <li><a href="/wiki/Pulmonary_compliance" class="mw-redirect" title="Pulmonary compliance">compliance</a></li> <li><a href="/wiki/Elastic_recoil" title="Elastic recoil">elastic recoil</a></li> <li><a href="/wiki/Hysteresivity" title="Hysteresivity">hysteresivity</a></li> <li><a href="/wiki/Airway_resistance" title="Airway resistance">airway resistance</a></li> <li>bronchial <ul><li><a href="/wiki/Bronchial_hyperresponsiveness" title="Bronchial hyperresponsiveness">hyperresponsiveness</a></li> <li><a href="/wiki/Bronchoconstriction" title="Bronchoconstriction">constriction</a></li> <li><a href="/wiki/Bronchodilatation" title="Bronchodilatation">dilatation</a></li></ul></li> <li><a href="/wiki/Mechanical_ventilation" title="Mechanical ventilation">mechanical ventilation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Control_of_ventilation" title="Control of ventilation">Control</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Pons" title="Pons">pons</a></i> <ul><li><a href="/wiki/Pneumotaxic_center" class="mw-redirect" title="Pneumotaxic center">pneumotaxic center</a></li> <li><a href="/wiki/Apneustic_center" class="mw-redirect" title="Apneustic center">apneustic center</a></li></ul></li> <li><i><a href="/wiki/Medulla_oblongata" title="Medulla oblongata">medulla</a></i> <ul><li><a href="/wiki/Dorsal_respiratory_group" class="mw-redirect" title="Dorsal respiratory group">dorsal respiratory group</a></li> <li><a href="/wiki/Ventral_respiratory_group" class="mw-redirect" title="Ventral respiratory group">ventral respiratory group</a></li></ul></li> <li><i><a href="/wiki/Chemoreceptor" title="Chemoreceptor">chemoreceptors</a></i> <ul><li><a href="/wiki/Central_chemoreceptors" title="Central chemoreceptors">central</a></li> <li><a href="/wiki/Peripheral_chemoreceptors" title="Peripheral chemoreceptors">peripheral</a></li></ul></li> <li><a href="/wiki/Pulmonary_stretch_receptors" title="Pulmonary stretch receptors">pulmonary stretch receptors</a> <ul><li><a href="/wiki/Hering%E2%80%93Breuer_reflex" title="Hering–Breuer reflex">Hering–Breuer reflex</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Lung_volumes" title="Lung volumes">Lung volumes</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Vital_capacity" title="Vital capacity">VC</a></li> <li><a href="/wiki/Functional_residual_capacity" title="Functional residual capacity">FRC</a></li> <li><a href="/wiki/Tidal_volume" title="Tidal volume">Vt</a></li> <li><a href="/wiki/Dead_space_(physiology)" title="Dead space (physiology)">dead space</a></li> <li><a href="/wiki/Closing_capacity" title="Closing capacity">CC</a></li> <li><a href="/wiki/Peak_expiratory_flow" title="Peak expiratory flow">PEF</a></li></ul> <dl><dt>calculations</dt> <dd></dd> <dd><a href="/wiki/Respiratory_minute_volume" class="mw-redirect" title="Respiratory minute volume">respiratory minute volume</a></dd> <dd><a href="/wiki/FEV1/FVC_ratio" title="FEV1/FVC ratio">FEV1/FVC ratio</a></dd></dl> <dl><dt><a href="/wiki/Lung_function_test" class="mw-redirect" title="Lung function test">Lung function tests</a></dt> <dd></dd> <dd><a href="/wiki/Spirometry" title="Spirometry">spirometry</a></dd> <dd><a href="/wiki/Body_plethysmography" class="mw-redirect" title="Body plethysmography">body plethysmography</a></dd> <dd><a href="/wiki/Peak_flow_meter" class="mw-redirect" title="Peak flow meter">peak flow meter</a></dd> <dd><a href="/wiki/Nitrogen_washout" title="Nitrogen washout">nitrogen washout</a></dd></dl> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Circulation</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pulmonary_circulation" title="Pulmonary circulation">pulmonary circulation</a></li> <li><a href="/wiki/Hypoxic_pulmonary_vasoconstriction" title="Hypoxic pulmonary vasoconstriction">hypoxic pulmonary vasoconstriction</a></li> <li><a href="/wiki/Pulmonary_shunt" title="Pulmonary shunt">pulmonary shunt</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Interactions</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ventilation_(physiology)" class="mw-redirect" title="Ventilation (physiology)">ventilation (V)</a></li> <li><a href="/wiki/Perfusion" title="Perfusion">Perfusion</a> (Q) <ul><li><a href="/wiki/Ventilation/perfusion_ratio" title="Ventilation/perfusion ratio">Ventilation/perfusion ratio</a></li> <li><a href="/wiki/Ventilation/perfusion_scan" title="Ventilation/perfusion scan">V/Q scan</a></li></ul></li> <li><a href="/wiki/Zones_of_the_lung" title="Zones of the lung">zones of the lung</a></li> <li><a href="/wiki/Gas_exchange" title="Gas exchange">gas exchange</a></li> <li><a href="/wiki/Pulmonary_gas_pressures" title="Pulmonary gas pressures">pulmonary gas pressures</a></li> <li><a href="/wiki/Alveolar_gas_equation" title="Alveolar gas equation">alveolar gas equation</a></li> <li><a href="/wiki/Alveolar%E2%80%93arterial_gradient" title="Alveolar–arterial gradient">alveolar–arterial gradient</a></li> <li><a href="/wiki/Hemoglobin" title="Hemoglobin">hemoglobin</a></li> <li><a href="/wiki/Oxygen%E2%80%93hemoglobin_dissociation_curve" title="Oxygen–hemoglobin dissociation curve">oxygen–hemoglobin dissociation curve</a> (<a href="/wiki/Oxygen_saturation" title="Oxygen saturation">Oxygen saturation</a></li> <li><a href="/wiki/2,3-Bisphosphoglyceric_acid" title="2,3-Bisphosphoglyceric acid">2,3-BPG</a></li> <li><a href="/wiki/Bohr_effect" title="Bohr effect">Bohr effect</a></li> <li><a href="/wiki/Haldane_effect" title="Haldane effect">Haldane effect</a>)</li> <li><a href="/wiki/Carbonic_anhydrase" title="Carbonic anhydrase">carbonic anhydrase</a> (<a href="/wiki/Chloride_shift" title="Chloride shift">chloride shift</a>)</li> <li><a href="/wiki/Oxyhemoglobin" class="mw-redirect" title="Oxyhemoglobin">oxyhemoglobin</a></li> <li><a href="/wiki/Respiratory_quotient" title="Respiratory quotient">respiratory quotient</a></li> <li><a href="/wiki/Arterial_blood_gas" class="mw-redirect" title="Arterial blood gas">arterial blood gas</a></li> <li><a href="/wiki/Diffusion_capacity" class="mw-redirect" title="Diffusion capacity">diffusion capacity</a> (<a href="/wiki/DLCO" class="mw-redirect" title="DLCO">DLCO</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Insufficiency</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Effects_of_high_altitude_on_humans" title="Effects of high altitude on humans">high altitude</a> <ul><li><a href="/wiki/Death_zone" title="Death zone">death zone</a></li></ul></li> <li><a class="mw-selflink selflink">oxygen toxicity</a></li> <li><a href="/wiki/Hypoxia_(medical)" class="mw-redirect" title="Hypoxia (medical)">hypoxia</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="*_Poisoning_*_Toxicity_*_Overdose" style="padding:3px"><table class="nowraplinks hlist mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Poisoning_and_toxicity" title="Template:Poisoning and toxicity"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Poisoning_and_toxicity" title="Template talk:Poisoning and toxicity"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Poisoning_and_toxicity" title="Special:EditPage/Template:Poisoning and toxicity"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="*_Poisoning_*_Toxicity_*_Overdose" class="hlist" style="font-size:114%;margin:0 4em"> <ul><li><a href="/wiki/Poisoning" title="Poisoning">Poisoning</a></li> <li><a href="/wiki/Toxicity" title="Toxicity">Toxicity</a></li> <li><a href="/wiki/Drug_overdose" title="Drug overdose">Overdose</a></li></ul> </div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Poison" title="Poison">Poison</a></li> <li><a href="/wiki/History_of_poison" title="History of poison">History</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Inorganic_chemistry" title="Inorganic chemistry">Inorganic</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Metal" title="Metal">Metals</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Toxic_metal" class="mw-redirect" title="Toxic metal">Toxic metals</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Beryllium_poisoning" title="Beryllium poisoning">Beryllium</a></li> <li><a href="/wiki/Cadmium_poisoning" title="Cadmium poisoning">Cadmium</a></li> <li><a href="/wiki/Lead_poisoning" title="Lead poisoning">Lead</a></li> <li><a href="/wiki/Mercury_poisoning" title="Mercury poisoning">Mercury</a></li> <li><a href="/wiki/Nickel#Toxicity" title="Nickel">Nickel</a></li> <li><a href="/wiki/Thallium_poisoning" title="Thallium poisoning">Thallium</a></li> <li><a href="/wiki/Tin_poisoning" title="Tin poisoning">Tin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dietary_mineral" class="mw-redirect" title="Dietary mineral">Dietary minerals</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium_toxicity" title="Chromium toxicity">Chromium</a></li> <li><a href="/wiki/Cobalt_poisoning" title="Cobalt poisoning">Cobalt</a></li> <li><a href="/wiki/Copper_toxicity" title="Copper toxicity">Copper</a></li> <li><a href="/wiki/Iron_poisoning" title="Iron poisoning">Iron</a></li> <li><a href="/wiki/Manganism" title="Manganism">Manganese</a></li> <li><a href="/wiki/Zinc_toxicity" title="Zinc toxicity">Zinc</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other non-toxic metals</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Argyria" title="Argyria">Silver</a><sup>1</sup></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Metalloid" title="Metalloid">Metalloids</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arsenic_poisoning" title="Arsenic poisoning">Arsenic</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Nonmetal_(chemistry)" class="mw-redirect" title="Nonmetal (chemistry)">Nonmetals</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Sulfuric_acid_poisoning" title="Sulfuric acid poisoning">Sulfuric acid</a></li> <li><a href="/wiki/Selenium#Toxicity" title="Selenium">Selenium</a></li> <li><a href="/wiki/Chlorine_gas_poisoning" title="Chlorine gas poisoning">Chlorine</a></li> <li><a href="/wiki/Fluoride_toxicity" title="Fluoride toxicity">Fluoride</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Organic_compound" title="Organic compound">Organic</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Phosphorus" title="Phosphorus">Phosphorus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pesticide_poisoning" title="Pesticide poisoning">Pesticides</a> <ul><li><a href="/wiki/Aluminium_phosphide_poisoning" title="Aluminium phosphide poisoning">Aluminium phosphide</a></li> <li><a href="/wiki/Organophosphate_poisoning" title="Organophosphate poisoning">Organophosphates</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Nitrogen" title="Nitrogen">Nitrogen</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cyanide_poisoning" title="Cyanide poisoning">Cyanide</a></li> <li><a href="/wiki/Nicotine_poisoning" title="Nicotine poisoning">Nicotine</a></li> <li><a href="/wiki/Nitrogen_dioxide_poisoning" title="Nitrogen dioxide poisoning">Nitrogen dioxide poisoning</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">CHO</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Alcohol_(chemistry)" title="Alcohol (chemistry)">alcohol</a></i> <ul><li><a href="/wiki/Short-term_effects_of_alcohol_consumption#Excessive_doses" title="Short-term effects of alcohol consumption">Ethanol</a></li> <li><a href="/wiki/Ethylene_glycol_poisoning" title="Ethylene glycol poisoning">Ethylene glycol</a></li> <li><a href="/wiki/Methanol_toxicity" title="Methanol toxicity">Methanol</a></li></ul></li> <li><a href="/wiki/Carbon_monoxide_poisoning" title="Carbon monoxide poisoning">Carbon monoxide</a></li> <li><a class="mw-selflink selflink">Oxygen</a></li> <li><a href="/wiki/Toluene_toxicity" title="Toluene toxicity">Toluene</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pharmaceutical_drug" class="mw-redirect" title="Pharmaceutical drug">Pharmaceutical</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Drug_overdoses" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Drug_overdose" title="Drug overdose">Drug overdoses</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Nervous_system" title="Nervous system">Nervous</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alcohol_intoxication" title="Alcohol intoxication">Alcohol</a></li> <li><a href="/wiki/Anticholinesterase_poisoning" class="mw-redirect" title="Anticholinesterase poisoning">Anticholinesterase</a></li> <li><a href="/wiki/Aspirin_poisoning" class="mw-redirect" title="Aspirin poisoning">Aspirin</a></li> <li><a href="/wiki/Barbiturate_overdose" title="Barbiturate overdose">Barbiturates</a></li> <li><a href="/wiki/Benzodiazepine_overdose" title="Benzodiazepine overdose">Benzodiazepines</a></li> <li><a href="/wiki/Cocaine_toxicity" class="mw-redirect" title="Cocaine toxicity">Cocaine</a></li> <li><a href="/wiki/Lithium_toxicity" title="Lithium toxicity">Lithium</a></li> <li><a href="/wiki/Opioid_overdose" title="Opioid overdose">Opioids</a></li> <li><a href="/wiki/Paracetamol_poisoning" title="Paracetamol poisoning">Paracetamol</a></li> <li><a href="/wiki/Serotonin_syndrome" title="Serotonin syndrome">Serotonergic substances</a></li> <li><a href="/wiki/Tricyclic_antidepressant_overdose" title="Tricyclic antidepressant overdose">Tricyclic antidepressants</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cardiovascular_system" class="mw-redirect" title="Cardiovascular system">Cardiovascular</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Digoxin_toxicity" title="Digoxin toxicity">Digoxin</a></li> <li><a href="/wiki/Dipyridamole#Overdose" title="Dipyridamole">Dipyridamole</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Vitamin_poisoning" class="mw-redirect" title="Vitamin poisoning">Vitamin poisoning</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hypervitaminosis_A" title="Hypervitaminosis A">Vitamin A</a></li> <li><a href="/wiki/Hypervitaminosis_D" class="mw-redirect" title="Hypervitaminosis D">Vitamin D</a></li> <li><a href="/wiki/Hypervitaminosis_E" class="mw-redirect" title="Hypervitaminosis E">Vitamin E</a></li> <li><a href="/wiki/Megavitamin-B6_syndrome" title="Megavitamin-B6 syndrome">Megavitamin-B<sub>6</sub> syndrome</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Biological<sup>2</sup></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Venomous_fish" title="Venomous fish">Fish</a> / <a href="/wiki/Seafood" title="Seafood">Seafood</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ciguatera" class="mw-redirect" title="Ciguatera">Ciguatera</a></li> <li><a href="/wiki/Haff_disease" title="Haff disease">Haff disease</a></li> <li><a href="/wiki/Ichthyoallyeinotoxism" title="Ichthyoallyeinotoxism">Ichthyoallyeinotoxism</a></li> <li><a href="/wiki/Scombroid_food_poisoning" title="Scombroid food poisoning">Scombroid</a></li> <li><a href="/wiki/Shellfish_poisoning" title="Shellfish poisoning">Shellfish poisoning</a> <ul><li><a href="/wiki/Amnesic_shellfish_poisoning" title="Amnesic shellfish poisoning">Amnesic</a></li> <li><a href="/wiki/Diarrhetic_shellfish_poisoning" class="mw-redirect" title="Diarrhetic shellfish poisoning">Diarrhetic</a></li> <li><a href="/wiki/Neurotoxic_shellfish_poisoning" title="Neurotoxic shellfish poisoning">Neurotoxic</a></li> <li><a href="/wiki/Paralytic_shellfish_poisoning" title="Paralytic shellfish poisoning">Paralytic</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other <a href="/wiki/Vertebrate" title="Vertebrate">vertebrates</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Poisonous_amphibian" title="Poisonous amphibian">Amphibian</a> <ul><li><a href="/wiki/Batrachotoxin" title="Batrachotoxin">Batrachotoxin</a></li> <li><a href="/wiki/Bombesin" title="Bombesin">Bombesin</a></li> <li><a href="/wiki/Bufotenin" title="Bufotenin">Bufotenin</a></li> <li><a href="/wiki/Physalaemin" title="Physalaemin">Physalaemin</a></li></ul></li> <li><a href="/wiki/Toxic_bird" title="Toxic bird">Birds</a> <ul><li><a href="/wiki/Coturnism" title="Coturnism">Coturnism</a></li></ul></li> <li><a href="/wiki/Venomous_mammal" title="Venomous mammal">Mammal</a></li> <li><a href="/wiki/Venomous_snake" title="Venomous snake">Snakes</a> / <a href="/wiki/Snake_venom" title="Snake venom">Snake venom</a> <ul><li><a href="/wiki/Alpha-Bungarotoxin" class="mw-redirect" title="Alpha-Bungarotoxin">Alpha-Bungarotoxin</a></li> <li><a href="/wiki/Ancrod" title="Ancrod">Ancrod</a></li> <li><a href="/wiki/Batroxobin" title="Batroxobin">Batroxobin</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Arthropod" title="Arthropod">Arthropods</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arthropod_bites_and_stings" title="Arthropod bites and stings">Arthropod bites and stings</a></li> <li><a href="/wiki/Bee_sting" title="Bee sting">Bee sting</a> / <a href="/wiki/Apitoxin" title="Apitoxin">Bee venom</a> <ul><li><a href="/wiki/Apamin" title="Apamin">Apamin</a></li> <li><a href="/wiki/Melittin" title="Melittin">Melittin</a></li></ul></li> <li><a href="/wiki/Scorpion_venom" class="mw-redirect" title="Scorpion venom">Scorpion venom</a> <ul><li><a href="/wiki/Charybdotoxin" title="Charybdotoxin">Charybdotoxin</a></li></ul></li> <li><a href="/wiki/Spider_bite" title="Spider bite">spider venom</a> <ul><li><a href="/wiki/Latrotoxin" title="Latrotoxin">Latrotoxin</a> / <a href="/wiki/Latrodectism" title="Latrodectism">Latrodectism</a></li> <li><a href="/wiki/Loxoscelism" title="Loxoscelism">Loxoscelism</a></li></ul></li> <li><a href="/wiki/Tick_paralysis" title="Tick paralysis">Tick paralysis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_poisonous_plants" title="List of poisonous plants">Plants</a> / <a href="/wiki/List_of_poisonous_fungus_species" title="List of poisonous fungus species">Fungi</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cinchonism" title="Cinchonism">Cinchonism</a></li> <li><a href="/wiki/Ergotism" title="Ergotism">Ergotism</a></li> <li><a href="/wiki/Fish_toxins" title="Fish toxins">Fish toxins</a></li> <li><a href="/wiki/Lathyrism" title="Lathyrism">Lathyrism</a></li> <li><a href="/wiki/Locoweed" title="Locoweed">Locoism</a></li> <li><a href="/wiki/Mushroom_poisoning" title="Mushroom poisoning">Mushroom</a></li> <li><a href="/wiki/Strychnine_poisoning" title="Strychnine poisoning">Strychnine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related topics</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Animal_bite" title="Animal bite">Bite</a> and <a href="/wiki/Stinger" title="Stinger">Stinger</a> <ul><li><a href="/wiki/Stinging_plant" title="Stinging plant">plant</a></li></ul></li> <li><a href="/wiki/Cnidocyte" title="Cnidocyte">Cnidocyte</a></li> <li><a href="/wiki/List_of_venomous_animals" title="List of venomous animals">Venomous animals</a></li> <li><a href="/wiki/List_of_poisonous_animals" title="List of poisonous animals">Poisonous animals</a></li> <li><a href="/wiki/List_of_deadly_fungus_species" title="List of deadly fungus species">Deadly fungus</a></li> <li><a href="/wiki/Mycotoxicology" title="Mycotoxicology">Mycotoxicology</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Miscellaneous</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Antibiotic" title="Antibiotic">Antibiotic</a></li> <li><a href="/wiki/EPA_list_of_extremely_hazardous_substances" title="EPA list of extremely hazardous substances">EPA list of hazard</a></li> <li><a href="/wiki/Lists_of_poisonings" title="Lists of poisonings">Lists of poisonings</a></li> <li><a href="/wiki/List_of_types_of_poison" title="List of types of poison">List of types of poison</a></li> <li><a href="/wiki/Pollution" title="Pollution">Pollution</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="background: transparent; padding: 0px;"><div></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td class="navbox-abovebelow" colspan="2"><div id="1Silver_is_generally_non-toxic_metal,_but_in_large_doses_it_can_lead_to_argyria,_which_is_rare._2_including_venoms,_toxins,_foodborne_illnesses."><sup>1</sup><a href="/wiki/Silver" title="Silver">Silver</a> is generally non-toxic metal, but in large doses it can lead to <a href="/wiki/Argyria" title="Argyria">argyria</a>, which is rare.<br /> <sup>2</sup> including <a href="/wiki/Venom" title="Venom">venoms</a>, <a href="/wiki/Toxin" title="Toxin">toxins</a>, <a href="/wiki/Foodborne_illness" title="Foodborne illness">foodborne illnesses</a>.</div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Category:Toxicology" title="Category:Toxicology">Category</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <b><a href="https://commons.wikimedia.org/wiki/Category:Toxicology" class="extiw" title="commons:Category:Toxicology">Commons</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="WikiProject"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/16px-People_icon.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/24px-People_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/32px-People_icon.svg.png 2x" data-file-width="100" data-file-height="100" /></span></span> <b><a href="/wiki/Wikipedia:WikiProject_Toxicology" class="mw-redirect" title="Wikipedia:WikiProject Toxicology">WikiProject</a></b></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Underwater_diving" style="padding:3px"><table class="nowraplinks hlist mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Underwater_diving" title="Template:Underwater diving"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Underwater_diving" title="Template talk:Underwater diving"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Underwater_diving" title="Special:EditPage/Template:Underwater diving"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Underwater_diving" style="font-size:114%;margin:0 4em"><a href="/wiki/Underwater_diving" title="Underwater diving">Underwater diving</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Diving_activities" title="Diving activities">Diving activities</a></li> <li><a href="/wiki/Diving_mode" class="mw-redirect" title="Diving mode">Diving modes</a> <ul><li><a href="/wiki/Atmospheric_pressure_diving" class="mw-redirect" title="Atmospheric pressure diving">Atmospheric pressure diving</a></li> <li><a href="/wiki/Freediving" title="Freediving">Freediving</a></li> <li><a href="/wiki/Saturation_diving" title="Saturation diving">Saturation diving</a></li> <li><a href="/wiki/Scuba_diving" title="Scuba diving">Scuba diving</a></li> <li><a href="/wiki/Snorkeling" title="Snorkeling">Snorkeling</a></li> <li><a href="/wiki/Surface_oriented_diving" class="mw-redirect" title="Surface oriented diving">Surface oriented diving</a></li> <li><a href="/wiki/Surface-supplied_diving" title="Surface-supplied diving">Surface-supplied diving</a></li> <li><a href="/wiki/Unmanned_diving" class="mw-redirect" title="Unmanned diving">Unmanned diving</a></li></ul></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Diving_equipment" style="font-size:114%;margin:0 4em"><a href="/wiki/Diving_equipment" title="Diving equipment">Diving equipment</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cleaning_and_disinfection_of_personal_diving_equipment" title="Cleaning and disinfection of personal diving equipment">Cleaning and disinfection of personal diving equipment</a></li> <li><a href="/wiki/Human_factors_in_diving_equipment_design" title="Human factors in diving equipment design">Human factors in diving equipment design</a></li> <li><a href="/wiki/List_of_diving_equipment_manufacturers" title="List of diving equipment manufacturers">List of diving equipment manufacturers</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Basic equipment</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_mask" title="Diving mask">Diving mask</a></li> <li><a href="/wiki/Snorkel_(swimming)" title="Snorkel (swimming)">Snorkel</a></li> <li><a href="/wiki/Swimfin" title="Swimfin">Swimfin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Breathing_gas" title="Breathing gas">Breathing gas</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bailout_gas" class="mw-redirect" title="Bailout gas">Bailout gas</a></li> <li><a href="/wiki/Bottom_gas" class="mw-redirect" title="Bottom gas">Bottom gas</a></li> <li><a href="/wiki/Breathing_air" class="mw-redirect" title="Breathing air">Breathing air</a></li> <li><a href="/wiki/Decompression_gas" class="mw-redirect" title="Decompression gas">Decompression gas</a></li> <li><a href="/wiki/Emergency_gas_supply" class="mw-redirect" title="Emergency gas supply">Emergency gas supply</a></li> <li><a href="/wiki/Heliox" title="Heliox">Heliox</a></li> <li><a href="/wiki/Hydreliox" title="Hydreliox">Hydreliox</a></li> <li><a href="/wiki/Hydrox_(breathing_gas)" title="Hydrox (breathing gas)">Hydrox</a></li> <li><a href="/wiki/Nitrox" title="Nitrox">Nitrox</a></li> <li><a href="/wiki/Oxygen" title="Oxygen">Oxygen</a></li> <li><a href="/wiki/Travel_gas" class="mw-redirect" title="Travel gas">Travel gas</a></li> <li><a href="/wiki/Trimix_(breathing_gas)" title="Trimix (breathing gas)">Trimix</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Buoyancy and<br />trim equipment</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Avelo_diving_system" title="Avelo diving system">Avelo diving system</a></li> <li><a href="/wiki/Buoyancy_compensator_(diving)" title="Buoyancy compensator (diving)">Buoyancy compensator</a> <ul><li><a href="/wiki/Power_inflator" class="mw-redirect" title="Power inflator">Power inflator</a></li> <li><a href="/wiki/Dump_valve_(diving)" class="mw-redirect" title="Dump valve (diving)">Dump valve</a></li> <li><a href="/wiki/Variable_buoyancy_pressure_vessel" class="mw-redirect" title="Variable buoyancy pressure vessel">Variable buoyancy pressure vessel</a></li></ul></li> <li><a href="/wiki/Diving_weighting_system" title="Diving weighting system">Diving weighting system</a> <ul><li><a href="/wiki/Ankle_weights_(diving)" class="mw-redirect" title="Ankle weights (diving)">Ankle weights</a></li> <li><a href="/wiki/Integrated_weights" class="mw-redirect" title="Integrated weights">Integrated weights</a></li> <li><a href="/wiki/Trim_weights_(diving)" class="mw-redirect" title="Trim weights (diving)">Trim weights</a></li> <li><a href="/wiki/Weight_belt" class="mw-redirect" title="Weight belt">Weight belt</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Decompression_equipment" title="Decompression equipment">Decompression<br />equipment</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Decompression_buoy" class="mw-redirect" title="Decompression buoy">Decompression buoy</a></li> <li><a href="/wiki/Decompression_chamber" class="mw-redirect" title="Decompression chamber">Decompression chamber</a></li> <li><a href="/wiki/Decompression_cylinder" class="mw-redirect" title="Decompression cylinder">Decompression cylinder</a></li> <li><a href="/wiki/Decompression_trapeze" class="mw-redirect" title="Decompression trapeze">Decompression trapeze</a></li> <li><a href="/wiki/Dive_computer" title="Dive computer">Dive computer</a></li> <li><a href="/wiki/Diving_bell" title="Diving bell">Diving bell</a></li> <li><a href="/wiki/Diving_shot" title="Diving shot">Diving shot</a></li> <li><a href="/wiki/Diving_stage" class="mw-redirect" title="Diving stage">Diving stage</a></li> <li><a href="/wiki/Jersey_upline" class="mw-redirect" title="Jersey upline">Jersey upline</a></li> <li><a href="/wiki/Jonline" class="mw-redirect" title="Jonline">Jonline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_suit" title="Diving suit">Diving suit</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atmospheric_diving_suit" title="Atmospheric diving suit">Atmospheric diving suit</a> <ul><li><a href="/wiki/JIM_suit" title="JIM suit">JIM suit</a></li> <li><a href="/wiki/Newtsuit" title="Newtsuit">Newtsuit</a></li></ul></li> <li><a href="/wiki/Dry_suit" title="Dry suit">Dry suit</a> <ul><li><a href="/wiki/Sladen_suit" class="mw-redirect" title="Sladen suit">Sladen suit</a></li> <li><a href="/wiki/Standard_diving_suit" class="mw-redirect" title="Standard diving suit">Standard diving suit</a></li></ul></li> <li><a href="/wiki/Rash_vest" class="mw-redirect" title="Rash vest">Rash vest</a></li> <li><a href="/wiki/Wetsuit" title="Wetsuit">Wetsuit</a> <ul><li><a href="/wiki/Dive_skins" class="mw-redirect" title="Dive skins">Dive skins</a></li> <li><a href="/wiki/Hot-water_suit" class="mw-redirect" title="Hot-water suit">Hot-water suit</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Helmets<br />and masks</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anti-fog" title="Anti-fog">Anti-fog</a></li> <li><a href="/wiki/Diving_helmet" title="Diving helmet">Diving helmet</a> <ul><li><a href="/wiki/Free-flow_helmet" class="mw-redirect" title="Free-flow helmet">Free-flow helmet</a></li> <li><a href="/wiki/Lightweight_demand_helmet" class="mw-redirect" title="Lightweight demand helmet">Lightweight demand helmet</a></li> <li><a href="/wiki/Orinasal_mask" title="Orinasal mask">Orinasal mask</a></li> <li><a href="/wiki/Reclaim_helmet" class="mw-redirect" title="Reclaim helmet">Reclaim helmet</a></li> <li><a href="/wiki/Shallow_water_helmet" class="mw-redirect" title="Shallow water helmet">Shallow water helmet</a></li> <li><a href="/wiki/Standard_diving_helmet" class="mw-redirect" title="Standard diving helmet">Standard diving helmet</a></li></ul></li> <li><a href="/wiki/Diving_mask" title="Diving mask">Diving mask</a> <ul><li><a href="/wiki/Band_mask" class="mw-redirect" title="Band mask">Band mask</a></li> <li><a href="/wiki/Full-face_mask" class="mw-redirect" title="Full-face mask">Full-face mask</a></li> <li><a href="/wiki/Half_mask" class="mw-redirect" title="Half mask">Half mask</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Instrumentation</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bottom_timer" class="mw-redirect" title="Bottom timer">Bottom timer</a></li> <li><a href="/wiki/Depth_gauge" title="Depth gauge">Depth gauge</a></li> <li><a href="/wiki/Dive_computer" title="Dive computer">Dive computer</a></li> <li><a href="/wiki/Dive_timer" class="mw-redirect" title="Dive timer">Dive timer</a></li> <li><a href="/wiki/Diving_watch" title="Diving watch">Diving watch</a> <ul><li><a href="/wiki/Helium_release_valve" title="Helium release valve">Helium release valve</a></li></ul></li> <li><a href="/wiki/Electro-galvanic_oxygen_sensor" title="Electro-galvanic oxygen sensor">Electro-galvanic oxygen sensor</a></li> <li><a href="/wiki/Pneumofathometer" class="mw-redirect" title="Pneumofathometer">Pneumofathometer</a></li> <li><a href="/wiki/Submersible_pressure_gauge" class="mw-redirect" title="Submersible pressure gauge">Submersible pressure gauge</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Mobility<br />equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diver_propulsion_vehicle" title="Diver propulsion vehicle">Diver propulsion vehicle</a></li> <li><a href="/wiki/Diving_bell" title="Diving bell">Diving bell</a> <ul><li><a href="/wiki/Closed_bell" class="mw-redirect" title="Closed bell">Closed bell</a></li> <li><a href="/wiki/Wet_bell" class="mw-redirect" title="Wet bell">Wet bell</a></li></ul></li> <li><a href="/wiki/Diving_stage" class="mw-redirect" title="Diving stage">Diving stage</a></li> <li><a href="/wiki/Swimfin" title="Swimfin">Swimfin</a> <ul><li><a href="/wiki/Monofin" title="Monofin">Monofin</a></li> <li><a href="/wiki/PowerSwim" title="PowerSwim">PowerSwim</a></li></ul></li> <li><a href="/wiki/Towboard" title="Towboard">Towboard</a></li> <li><a href="/wiki/Wet_sub" title="Wet sub">Wet sub</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Safety<br />equipment</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternative_air_source" title="Alternative air source">Alternative air source</a> <ul><li><a href="/wiki/Octopus_regulator" class="mw-redirect" title="Octopus regulator">Octopus regulator</a></li> <li><a href="/wiki/Pony_bottle" title="Pony bottle">Pony bottle</a></li></ul></li> <li><a href="/wiki/Bolt_snap" title="Bolt snap">Bolt snap</a></li> <li><a href="/wiki/Buddy_line" class="mw-redirect" title="Buddy line">Buddy line</a></li> <li><a href="/wiki/Dive_light" title="Dive light">Dive light</a></li> <li><a href="/wiki/Diver%27s_cutting_tool" class="mw-redirect" title="Diver's cutting tool">Diver's cutting tool</a> <ul><li><a href="/wiki/Diver%27s_knife" class="mw-redirect" title="Diver's knife">Diver's knife</a></li></ul></li> <li><a href="/wiki/Diver%27s_telephone" class="mw-redirect" title="Diver's telephone">Diver's telephone</a></li> <li><a href="/wiki/Through-water_communications" class="mw-redirect" title="Through-water communications">Through-water communications</a> <ul><li><a href="/wiki/Underwater_acoustic_communication" title="Underwater acoustic communication">Underwater acoustic communication</a></li></ul></li> <li><a href="/wiki/Diving_bell" title="Diving bell">Diving bell</a></li> <li><a href="/wiki/Diving_safety_harness" class="mw-redirect" title="Diving safety harness">Diving safety harness</a></li> <li><a href="/wiki/Emergency_gas_supply" class="mw-redirect" title="Emergency gas supply">Emergency gas supply</a> <ul><li><a href="/wiki/Bailout_block" class="mw-redirect" title="Bailout block">Bailout block</a></li> <li><a href="/wiki/Bailout_bottle" title="Bailout bottle">Bailout bottle</a></li></ul></li> <li><a href="/wiki/Lifeline_(diving)" class="mw-redirect" title="Lifeline (diving)">Lifeline</a> <ul><li><a href="/wiki/Screw_gate_carabiner" class="mw-redirect" title="Screw gate carabiner">Screw gate carabiner</a></li></ul></li> <li><a href="/wiki/Emergency_locator_beacon" title="Emergency locator beacon">Emergency locator beacon</a></li> <li><a href="/wiki/Rescue_tether" class="mw-redirect" title="Rescue tether">Rescue tether</a></li> <li><a href="/wiki/Safety_helmet" class="mw-redirect" title="Safety helmet">Safety helmet</a></li> <li><a href="/wiki/Shark-proof_cage" class="mw-redirect" title="Shark-proof cage">Shark-proof cage</a></li> <li><a href="/wiki/Snoopy_loop" class="mw-redirect" title="Snoopy loop">Snoopy loop</a></li> <li>Navigation equipment <ul><li><a href="/wiki/Distance_line" title="Distance line">Distance line</a></li> <li><a href="/wiki/Diving_compass" class="mw-redirect" title="Diving compass">Diving compass</a></li> <li><a href="/wiki/Dive_reel" class="mw-redirect" title="Dive reel">Dive reel</a></li> <li><a href="/wiki/Line_marker" title="Line marker">Line marker</a></li> <li><a href="/wiki/Surface_marker_buoy" title="Surface marker buoy">Surface marker buoy</a></li> <li><a href="/wiki/Silt_screw" class="mw-redirect" title="Silt screw">Silt screw</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Underwater_breathing_apparatus" title="Underwater breathing apparatus">Underwater<br />breathing<br />apparatus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atmospheric_diving_suit" title="Atmospheric diving suit">Atmospheric diving suit</a></li> <li><a href="/wiki/Diving_cylinder" title="Diving cylinder">Diving cylinder</a> <ul><li><a href="/wiki/Burst_disc" class="mw-redirect" title="Burst disc">Burst disc</a></li> <li><a href="/wiki/Scuba_cylinder_valve" title="Scuba cylinder valve">Scuba cylinder valve</a></li></ul></li> <li><a href="/wiki/Diving_helmet" title="Diving helmet">Diving helmet</a> <ul><li><a href="/wiki/Reclaim_helmet" class="mw-redirect" title="Reclaim helmet">Reclaim helmet</a></li></ul></li> <li><a href="/wiki/Diving_regulator" title="Diving regulator">Diving regulator</a> <ul><li><a href="/wiki/Mechanism_of_diving_regulators" title="Mechanism of diving regulators">Mechanism of diving regulators</a></li> <li><a href="/wiki/Regulator_malfunction" class="mw-redirect" title="Regulator malfunction">Regulator malfunction</a> <ul><li><a href="/wiki/Regulator_freeze" class="mw-redirect" title="Regulator freeze">Regulator freeze</a></li></ul></li> <li><a href="/wiki/Single-hose_regulator" class="mw-redirect" title="Single-hose regulator">Single-hose regulator</a></li> <li><a href="/wiki/Twin-hose_regulator" class="mw-redirect" title="Twin-hose regulator">Twin-hose regulator</a></li></ul></li> <li><a href="/wiki/Full-face_diving_mask" title="Full-face diving mask">Full-face diving mask</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Open-circuit_scuba" class="mw-redirect" title="Open-circuit scuba">Open-circuit<br />scuba</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Scuba_set" title="Scuba set">Scuba set</a> <ul><li><a href="/wiki/Bailout_bottle" title="Bailout bottle">Bailout bottle</a></li> <li><a href="/wiki/Decompression_cylinder" class="mw-redirect" title="Decompression cylinder">Decompression cylinder</a></li> <li><a href="/wiki/Independent_doubles" class="mw-redirect" title="Independent doubles">Independent doubles</a></li> <li><a href="/wiki/Manifolded_twin_set" class="mw-redirect" title="Manifolded twin set">Manifolded twin set</a> <ul><li><a href="/wiki/Scuba_manifold" title="Scuba manifold">Scuba manifold</a></li></ul></li> <li><a href="/wiki/Pony_bottle" title="Pony bottle">Pony bottle</a></li> <li><a href="/wiki/Scuba_configuration" class="mw-redirect" title="Scuba configuration">Scuba configuration</a></li> <li><a href="/wiki/Sidemount" class="mw-redirect" title="Sidemount">Sidemount</a></li> <li><a href="/wiki/Sling_cylinder" class="mw-redirect" title="Sling cylinder">Sling cylinder</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_rebreather" title="Diving rebreather">Diving rebreathers</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Carbon_dioxide_scrubber" title="Carbon dioxide scrubber">Carbon dioxide scrubber</a></li> <li><a href="/wiki/Carleton_CDBA" class="mw-redirect" title="Carleton CDBA">Carleton CDBA</a></li> <li><a href="/wiki/Clearance_Divers_Life_Support_Equipment" title="Clearance Divers Life Support Equipment">Clearance Divers Life Support Equipment</a></li> <li><a href="/wiki/Cryogenic_rebreather" class="mw-redirect" title="Cryogenic rebreather">Cryogenic rebreather</a></li> <li><a href="/wiki/CUMA" title="CUMA">CUMA</a></li> <li><a href="/wiki/DSEA" class="mw-redirect" title="DSEA">DSEA</a></li> <li><a href="/wiki/Dr%C3%A4ger_Dolphin" class="mw-redirect" title="Dräger Dolphin">Dolphin</a></li> <li><a href="/wiki/Halcyon_PVR-BASC" title="Halcyon PVR-BASC">Halcyon PVR-BASC</a></li> <li><a href="/wiki/Halcyon_RB80" title="Halcyon RB80">Halcyon RB80</a></li> <li><a href="/wiki/IDA71" title="IDA71">IDA71</a></li> <li><a href="/wiki/Interspiro_DCSC" title="Interspiro DCSC">Interspiro DCSC</a></li> <li><a href="/wiki/LAR-5" class="mw-redirect" title="LAR-5">LAR-5</a></li> <li><a href="/wiki/LAR-6" class="mw-redirect" title="LAR-6">LAR-6</a></li> <li><a href="/wiki/LAR-V" class="mw-redirect" title="LAR-V">LAR-V</a></li> <li><a href="/wiki/Lambertsen_Amphibious_Respiratory_Unit" title="Lambertsen Amphibious Respiratory Unit">LARU</a></li> <li><a href="/wiki/Mark_IV_Amphibian" title="Mark IV Amphibian">Mark IV Amphibian</a></li> <li><a href="/wiki/Porpoise_(scuba_gear)" title="Porpoise (scuba gear)">Porpoise</a></li> <li><a href="/wiki/Dr%C3%A4ger_Ray" class="mw-redirect" title="Dräger Ray">Ray</a></li> <li><a href="/wiki/Siebe_Gorman_CDBA" title="Siebe Gorman CDBA">Siebe Gorman CDBA</a></li> <li><a href="/wiki/Siebe_Gorman_Salvus" title="Siebe Gorman Salvus">Salvus</a></li> <li><a href="/wiki/Siva_(rebreather)" class="mw-redirect" title="Siva (rebreather)">Siva</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Surface-supplied_diving_equipment" title="Surface-supplied diving equipment">Surface-supplied<br />diving equipment</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Air_line" title="Air line">Air line</a></li> <li><a href="/wiki/Diver%27s_umbilical" class="mw-redirect" title="Diver's umbilical">Diver's umbilical</a></li> <li><a href="/wiki/Diving_air_compressor" title="Diving air compressor">Diving air compressor</a></li> <li><a href="/wiki/Gas_panel" class="mw-redirect" title="Gas panel">Gas panel</a></li> <li><a href="/wiki/Hookah_(diving)" class="mw-redirect" title="Hookah (diving)">Hookah</a></li> <li><a href="/wiki/Scuba_replacement" class="mw-redirect" title="Scuba replacement">Scuba replacement</a></li> <li><a href="/wiki/Snuba" title="Snuba">Snuba</a></li> <li><a href="/wiki/Standard_diving_dress" title="Standard diving dress">Standard diving dress</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_diving_equipment_manufacturers" title="List of diving equipment manufacturers"> Diving<br />equipment<br />manufacturers</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AP_Diving" title="AP Diving">AP Diving</a></li> <li><a href="/wiki/Apeks" title="Apeks">Apeks</a></li> <li><a href="/wiki/Aqua_Lung_America" title="Aqua Lung America">Aqua Lung America</a></li> <li><a href="/wiki/Aqua_Lung/La_Spirotechnique" title="Aqua Lung/La Spirotechnique">Aqua Lung/La Spirotechnique</a></li> <li><a href="/wiki/Beuchat" title="Beuchat">Beuchat</a></li> <li><a href="/wiki/Ren%C3%A9_Cavalero" title="René Cavalero">René Cavalero</a></li> <li><a href="/wiki/Cis-Lunar" title="Cis-Lunar">Cis-Lunar</a></li> <li><a href="/wiki/Cressi-Sub" title="Cressi-Sub">Cressi-Sub</a></li> <li><a href="/wiki/Dacor_(scuba_diving)" title="Dacor (scuba diving)">Dacor</a></li> <li><a href="/wiki/DESCO" title="DESCO">DESCO</a></li> <li><a href="/wiki/Dive_Xtras" title="Dive Xtras">Dive Xtras</a></li> <li><a href="/wiki/Divex" title="Divex">Divex</a></li> <li><a href="/wiki/Diving_Unlimited_International" title="Diving Unlimited International">Diving Unlimited International</a></li> <li><a href="/wiki/Dr%C3%A4gerwerk" class="mw-redirect" title="Drägerwerk">Drägerwerk</a></li> <li><a href="/wiki/Faber_Industrie_S.p.A." title="Faber Industrie S.p.A.">Faber</a></li> <li><a href="/wiki/Fenzy" title="Fenzy">Fenzy</a></li> <li><a href="/wiki/Maurice_Fernez" title="Maurice Fernez">Maurice Fernez</a></li> <li><a href="/wiki/Luigi_Ferraro_(naval_officer)" class="mw-redirect" title="Luigi Ferraro (naval officer)">Technisub</a></li> <li><a href="/wiki/Oscar_Gugen" title="Oscar Gugen">Oscar Gugen</a></li> <li><a href="/wiki/Heinke_(diving_equipment_manufacturer)" title="Heinke (diving equipment manufacturer)">Heinke</a></li> <li><a href="/wiki/HeinrichsWeikamp" title="HeinrichsWeikamp">HeinrichsWeikamp</a></li> <li><a href="/wiki/Johnson_Outdoors" title="Johnson Outdoors">Johnson Outdoors</a></li> <li><a href="/wiki/Mares_(scuba_equipment)" title="Mares (scuba equipment)">Mares</a></li> <li><a href="/wiki/Morse_Diving" title="Morse Diving">Morse Diving</a></li> <li><a href="/wiki/Nemrod" title="Nemrod">Nemrod</a></li> <li><a href="/wiki/Oceanic_Worldwide" title="Oceanic Worldwide">Oceanic Worldwide</a></li> <li><a href="/wiki/Porpoise_(scuba_gear)" title="Porpoise (scuba gear)">Porpoise</a></li> <li><a href="/wiki/Shearwater_Research" title="Shearwater Research">Shearwater Research</a></li> <li><a href="/wiki/Siebe_Gorman" title="Siebe Gorman">Siebe Gorman</a></li> <li><a href="/wiki/Submarine_Products" title="Submarine Products">Submarine Products</a></li> <li><a href="/wiki/Suunto" title="Suunto">Suunto</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Diving_support_equipment" style="font-size:114%;margin:0 4em"><a href="/wiki/Diving_support_equipment" title="Diving support equipment">Diving support equipment</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Access equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boarding_stirrup" class="mw-redirect" title="Boarding stirrup">Boarding stirrup</a></li> <li><a href="/wiki/Diver_lift" class="mw-redirect" title="Diver lift">Diver lift</a></li> <li><a href="/wiki/Diving_bell" title="Diving bell">Diving bell</a></li> <li><a href="/wiki/Diving_ladder" class="mw-redirect" title="Diving ladder">Diving ladder</a></li> <li><a href="/wiki/Diving_platform_(scuba)" class="mw-redirect" title="Diving platform (scuba)">Diving platform (scuba)</a></li> <li><a href="/wiki/Diving_stage" class="mw-redirect" title="Diving stage">Diving stage</a></li> <li><a href="/wiki/Downline_(diving)" title="Downline (diving)">Downline</a></li> <li><a href="/wiki/Jackstay" title="Jackstay">Jackstay</a></li> <li><a href="/wiki/Launch_and_recovery_system_(diving)" class="mw-redirect" title="Launch and recovery system (diving)">Launch and recovery system</a></li> <li><a href="/wiki/Messenger_line" title="Messenger line">Messenger line</a></li> <li><a href="/wiki/Moon_pool" title="Moon pool">Moon pool</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Breathing gas<br />handling</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_air_compressor#Filtration" title="Diving air compressor">Air filtration</a> <ul><li><a href="/wiki/Activated_carbon" title="Activated carbon">Activated carbon</a></li> <li><a href="/wiki/Hopcalite" title="Hopcalite">Hopcalite</a></li> <li><a href="/wiki/Molecular_sieve" title="Molecular sieve">Molecular sieve</a></li> <li><a href="/wiki/Silica_gel" title="Silica gel">Silica gel</a></li></ul></li> <li><a href="/wiki/Booster_pump" title="Booster pump">Booster pump</a></li> <li><a href="/wiki/Carbon_dioxide_scrubber" title="Carbon dioxide scrubber">Carbon dioxide scrubber</a></li> <li><a href="/wiki/Cascade_filling_system" title="Cascade filling system">Cascade filling system</a></li> <li><a href="/wiki/Diver%27s_pump" title="Diver's pump">Diver's pump</a></li> <li><a href="/wiki/Diving_air_compressor" title="Diving air compressor">Diving air compressor</a> <ul><li><a href="/wiki/Diving_air_filter" class="mw-redirect" title="Diving air filter">Diving air filter</a></li> <li><a href="/wiki/Water_separator" class="mw-redirect" title="Water separator">Water separator</a></li> <li><a href="/wiki/High_pressure_breathing_air_compressor" class="mw-redirect" title="High pressure breathing air compressor">High pressure breathing air compressor</a></li> <li><a href="/wiki/Low_pressure_breathing_air_compressor" class="mw-redirect" title="Low pressure breathing air compressor">Low pressure breathing air compressor</a></li></ul></li> <li><a href="/wiki/Gas_blending" title="Gas blending">Gas blending</a> <ul><li><a href="/wiki/Gas_blending_for_scuba_diving" title="Gas blending for scuba diving">Gas blending for scuba diving</a></li></ul></li> <li><a href="/wiki/Gas_panel" class="mw-redirect" title="Gas panel">Gas panel</a></li> <li><a href="/wiki/Gas_reclaim_system" class="mw-redirect" title="Gas reclaim system">Gas reclaim system</a></li> <li><a href="/wiki/Gas_storage_bank" class="mw-redirect" title="Gas storage bank">Gas storage bank</a> <ul><li><a href="/wiki/Gas_storage_quad" class="mw-redirect" title="Gas storage quad">Gas storage quad</a></li> <li><a href="/wiki/Gas_storage_tube" class="mw-redirect" title="Gas storage tube">Gas storage tube</a></li></ul></li> <li><a href="/wiki/Helium_analyzer" title="Helium analyzer">Helium analyzer</a></li> <li><a href="/wiki/Nitrox_production" class="mw-redirect" title="Nitrox production">Nitrox production</a> <ul><li><a href="/wiki/Membrane_gas_separation" title="Membrane gas separation">Membrane gas separation</a></li> <li><a href="/wiki/Pressure_swing_adsorption" title="Pressure swing adsorption">Pressure swing adsorption</a></li></ul></li> <li><a href="/wiki/Oxygen_analyser" class="mw-redirect" title="Oxygen analyser">Oxygen analyser</a> <ul><li><a href="/wiki/Electro-galvanic_oxygen_sensor" title="Electro-galvanic oxygen sensor">Electro-galvanic oxygen sensor</a></li></ul></li> <li><a href="/wiki/Oxygen_compatibility" title="Oxygen compatibility">Oxygen compatibility</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Decompression_equipment" title="Decompression equipment">Decompression<br />equipment</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Air-lock" class="mw-redirect" title="Air-lock">Air-lock</a></li> <li><a href="/wiki/Built-in_breathing_system" title="Built-in breathing system">Built-in breathing system</a></li> <li><a href="/wiki/Decompression_tables" class="mw-redirect" title="Decompression tables">Decompression tables</a></li> <li><a href="/wiki/Diving_bell" title="Diving bell">Diving bell</a> <ul><li><a href="/wiki/Bell_cursor" class="mw-redirect" title="Bell cursor">Bell cursor</a></li> <li><a href="/wiki/Closed_bell" class="mw-redirect" title="Closed bell">Closed bell</a></li> <li><a href="/wiki/Clump_weight" class="mw-redirect" title="Clump weight">Clump weight</a></li> <li><a href="/wiki/Launch_and_recovery_system_(diving)" class="mw-redirect" title="Launch and recovery system (diving)">Launch and recovery system</a></li> <li><a href="/wiki/Wet_bell" class="mw-redirect" title="Wet bell">Wet bell</a></li></ul></li> <li><a href="/wiki/Diving_chamber" title="Diving chamber">Diving chamber</a></li> <li><a href="/wiki/Diving_stage" class="mw-redirect" title="Diving stage">Diving stage</a></li> <li><a href="/wiki/Recreational_Dive_Planner" title="Recreational Dive Planner">Recreational Dive Planner</a></li> <li><a href="/wiki/Saturation_system" class="mw-redirect" title="Saturation system">Saturation system</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Platforms</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dive_boat" title="Dive boat">Dive boat</a> <ul><li><a href="/wiki/Canoe_and_kayak_diving" title="Canoe and kayak diving">Canoe and kayak diving</a></li> <li><a href="/wiki/Combat_rubber_raiding_craft" title="Combat rubber raiding craft">Combat rubber raiding craft</a></li> <li><a href="/wiki/Liveaboard" title="Liveaboard">Liveaboard</a></li> <li><a href="/wiki/Subskimmer" title="Subskimmer">Subskimmer</a></li></ul></li> <li><a href="/wiki/Diving_support_vessel" title="Diving support vessel">Diving support vessel</a> <ul><li><a href="/wiki/HMS_Challenger_(K07)" title="HMS Challenger (K07)">HMS Challenger (K07)</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Underwaterhabitat" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Underwater_habitat" title="Underwater habitat">Underwater<br />habitat</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aquarius_Reef_Base" title="Aquarius Reef Base">Aquarius Reef Base</a></li> <li><a href="/wiki/Continental_Shelf_Station_Two" title="Continental Shelf Station Two">Continental Shelf Station Two</a></li> <li><a href="/wiki/Helgoland_Habitat" title="Helgoland Habitat">Helgoland Habitat</a></li> <li><a href="/wiki/Scott_Carpenter_Space_Analog_Station" title="Scott Carpenter Space Analog Station">Scott Carpenter Space Analog Station</a></li> <li><a href="/wiki/SEALAB" title="SEALAB">SEALAB</a></li> <li><a href="/wiki/Tektite_habitat" title="Tektite habitat">Tektite habitat</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Remotely_operated_underwater_vehicle" title="Remotely operated underwater vehicle">Remotely operated<br />underwater vehicles</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/8A4-class_ROUV" title="8A4-class ROUV">8A4-class ROUV</a></li> <li><a href="/wiki/ABISMO" title="ABISMO">ABISMO</a></li> <li><a href="/wiki/Atlantis_ROV_Team" title="Atlantis ROV Team">Atlantis ROV Team</a></li> <li><a href="/wiki/COTSBot" title="COTSBot">COTSBot</a></li> <li><a href="/wiki/CURV" title="CURV">CURV</a></li> <li><a href="/wiki/Deep_Drone" title="Deep Drone">Deep Drone</a></li> <li><a href="/wiki/%C3%89paulard" title="Épaulard">Épaulard</a></li> <li><a href="/wiki/Global_Explorer_ROV" title="Global Explorer ROV">Global Explorer ROV</a></li> <li><a href="/wiki/Goldfish-class_ROUV" title="Goldfish-class ROUV">Goldfish-class ROUV</a></li> <li><a href="/wiki/Kaik%C5%8D_ROV" title="Kaikō ROV">Kaikō ROV</a></li> <li><a href="/wiki/Ka%C5%9Fif_ROUV" title="Kaşif ROUV">Kaşif ROUV</a></li> <li><a href="/wiki/Long-Term_Mine_Reconnaissance_System" title="Long-Term Mine Reconnaissance System">Long-Term Mine Reconnaissance System</a></li> <li><a href="/wiki/Mini_Rover_ROV" title="Mini Rover ROV">Mini Rover ROV</a></li> <li><a href="/wiki/OpenROV" title="OpenROV">OpenROV</a></li> <li><a href="/wiki/ROV_KIEL_6000" title="ROV KIEL 6000">ROV KIEL 6000</a></li> <li><a href="/wiki/ROV_PHOCA" title="ROV PHOCA">ROV PHOCA</a></li> <li><a href="/wiki/Scorpio_ROV" title="Scorpio ROV">Scorpio ROV</a></li> <li><a href="/wiki/Sea_Dragon-class_ROV" title="Sea Dragon-class ROV">Sea Dragon-class ROV</a></li> <li><a href="/wiki/Seabed_tractor" title="Seabed tractor">Seabed tractor</a></li> <li><a href="/wiki/Seafox_drone" title="Seafox drone">Seafox drone</a></li> <li><a href="/wiki/SeaPerch" title="SeaPerch">SeaPerch</a></li> <li><a href="/wiki/SJT-class_ROUV" title="SJT-class ROUV">SJT-class ROUV</a></li> <li><a href="/wiki/T1200_Trenching_Unit" title="T1200 Trenching Unit">T1200 Trenching Unit</a></li> <li><a href="/wiki/VideoRay_UROVs" title="VideoRay UROVs">VideoRay UROVs</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Safety equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diver_down_flag" title="Diver down flag">Diver down flag</a></li> <li><a href="/wiki/Diving_shot" title="Diving shot">Diving shot</a></li> <li><a href="/wiki/ENOS_Rescue-System" title="ENOS Rescue-System">ENOS Rescue-System</a></li> <li><a href="/wiki/Hyperbaric_lifeboat" class="mw-redirect" title="Hyperbaric lifeboat">Hyperbaric lifeboat</a></li> <li><a href="/wiki/Hyperbaric_stretcher" title="Hyperbaric stretcher">Hyperbaric stretcher</a></li> <li><a href="/wiki/Jackstay_(diving)" class="mw-redirect" title="Jackstay (diving)">Jackstay</a></li> <li><a href="/wiki/Jonline" class="mw-redirect" title="Jonline">Jonline</a></li> <li><a href="/wiki/Reserve_gas_supply_(diving)" class="mw-redirect" title="Reserve gas supply (diving)">Reserve gas supply</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">General</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_spread" class="mw-redirect" title="Diving spread">Diving spread</a> <ul><li><a href="/wiki/Air_spread" class="mw-redirect" title="Air spread">Air spread</a></li> <li><a href="/wiki/Saturation_spread" class="mw-redirect" title="Saturation spread">Saturation spread</a></li></ul></li> <li><a href="/wiki/Hot_water_system_(diving)" class="mw-redirect" title="Hot water system (diving)">Hot water system</a></li> <li><a href="/wiki/Sonar" title="Sonar">Sonar</a> <ul><li><a href="/wiki/Underwater_acoustic_positioning_system" title="Underwater acoustic positioning system">Underwater acoustic positioning system</a></li> <li><a href="/wiki/Underwater_acoustic_communication" title="Underwater acoustic communication">Underwater acoustic communication</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Freediving" style="font-size:114%;margin:0 4em"><a href="/wiki/Freediving" title="Freediving">Freediving</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Activities</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aquathlon_(underwater_wrestling)" title="Aquathlon (underwater wrestling)">Aquathlon</a></li> <li><a href="/wiki/Apnoea_finswimming" class="mw-redirect" title="Apnoea finswimming">Apnoea finswimming</a></li> <li><a href="/wiki/Freediving" title="Freediving">Freediving</a></li> <li><a href="/wiki/Haenyeo" title="Haenyeo">Haenyeo</a></li> <li><a href="/wiki/Pearl_hunting" title="Pearl hunting">Pearl hunting</a> <ul><li><a href="/wiki/Ama_(diving)" title="Ama (diving)">Ama</a></li></ul></li> <li><a href="/wiki/Snorkeling" title="Snorkeling">Snorkeling</a></li> <li><a href="/wiki/Spearfishing" title="Spearfishing">Spearfishing</a></li> <li><a href="/wiki/Underwater_football" title="Underwater football">Underwater football</a></li> <li><a href="/wiki/Underwater_hockey" title="Underwater hockey">Underwater hockey</a></li> <li><a href="/wiki/Underwater_rugby" title="Underwater rugby">Underwater rugby</a></li> <li><a href="/wiki/Underwater_target_shooting" title="Underwater target shooting">Underwater target shooting</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Competitions</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Nordic_Deep" title="Nordic Deep">Nordic Deep</a></li> <li><a href="/wiki/Vertical_Blue" title="Vertical Blue">Vertical Blue</a></li> <li>Disciplines <ul><li><a href="/wiki/Constant_weight" class="mw-redirect" title="Constant weight">Constant weight</a> (CWT)</li> <li><a href="/wiki/Constant_weight_bi-fins" title="Constant weight bi-fins">Constant weight bi-fins</a> (CWTB)</li> <li><a href="/wiki/Constant_weight_without_fins" title="Constant weight without fins">Constant weight without fins</a> (CNF)</li> <li><a href="/wiki/Dynamic_apnea" title="Dynamic apnea">Dynamic apnea</a> (DYN)</li> <li><a href="/wiki/Dynamic_apnea_without_fins" class="mw-redirect" title="Dynamic apnea without fins">Dynamic apnea without fins</a> (DNF)</li> <li><a href="/wiki/Free_immersion" class="mw-redirect" title="Free immersion">Free immersion</a> (FIM)</li> <li><a href="/wiki/No-limits_apnea" title="No-limits apnea">No-limits apnea</a> (NLT)</li> <li><a href="/wiki/Static_apnea" title="Static apnea">Static apnea</a> (STA)</li> <li><a href="/wiki/Skandalopetra_diving" title="Skandalopetra diving">Skandalopetra diving</a></li> <li><a href="/wiki/Variable_weight_apnea" class="mw-redirect" title="Variable weight apnea">Variable weight apnea</a> (VWT)</li> <li><a href="/wiki/Variable_weight_apnea_without_fins" class="mw-redirect" title="Variable weight apnea without fins">Variable weight apnea without fins</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_mask" title="Diving mask">Diving mask</a></li> <li><a href="/wiki/Diving_suit" title="Diving suit">Diving suit</a></li> <li><a href="/wiki/Hawaiian_sling" title="Hawaiian sling">Hawaiian sling</a></li> <li><a href="/wiki/Polespear" title="Polespear">Polespear</a></li> <li><a href="/wiki/Snorkel_(swimming)" title="Snorkel (swimming)">Snorkel (swimming)</a></li> <li><a href="/wiki/Speargun" title="Speargun">Speargun</a></li> <li><a href="/wiki/Swimfin" title="Swimfin">Swimfins</a> <ul><li><a href="/wiki/Monofin" title="Monofin">Monofin</a></li></ul></li> <li><a href="/wiki/Water_polo_cap" title="Water polo cap">Water polo cap</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Freedivers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Deborah_Andollo" title="Deborah Andollo">Deborah Andollo</a></li> <li><a href="/wiki/Simone_Arrigoni" title="Simone Arrigoni">Simone Arrigoni</a></li> <li><a href="/wiki/Peppo_Biscarini" title="Peppo Biscarini">Peppo Biscarini</a></li> <li><a href="/wiki/Michael_Board" title="Michael Board">Michael Board</a></li> <li><a href="/wiki/Sara_Campbell" title="Sara Campbell">Sara Campbell</a></li> <li><a href="/wiki/Derya_Can_G%C3%B6%C3%A7en" class="mw-redirect" title="Derya Can Göçen">Derya Can Göçen</a></li> <li><a href="/wiki/Goran_%C4%8Colak" title="Goran Čolak">Goran Čolak</a></li> <li><a href="/wiki/Carlos_Coste" title="Carlos Coste">Carlos Coste</a></li> <li><a href="/wiki/Robert_Croft_(diver)" title="Robert Croft (diver)">Robert Croft</a></li> <li><a href="/wiki/Mandy-Rae_Cruickshank" title="Mandy-Rae Cruickshank">Mandy-Rae Cruickshank</a></li> <li><a href="/wiki/Yasemin_Dalk%C4%B1l%C4%B1%C3%A7" title="Yasemin Dalkılıç">Yasemin Dalkılıç</a></li> <li><a href="/wiki/Leonardo_D%27Imporzano" title="Leonardo D'Imporzano">Leonardo D'Imporzano</a></li> <li><a href="/wiki/Flavia_Eberhard" title="Flavia Eberhard">Flavia Eberhard</a></li> <li><a href="/wiki/%C5%9Eahika_Erc%C3%BCmen" title="Şahika Ercümen">Şahika Ercümen</a></li> <li><a href="/wiki/Emma_Farrell_(freediver)" title="Emma Farrell (freediver)">Emma Farrell</a></li> <li><a href="/wiki/Francisco_Ferreras" title="Francisco Ferreras">Francisco Ferreras</a></li> <li><a href="/wiki/Pierre_Frolla" title="Pierre Frolla">Pierre Frolla</a></li> <li><a href="/wiki/Flavia_Eberhard" title="Flavia Eberhard">Flavia Eberhard</a></li> <li><a href="/wiki/Mehgan_Heaney-Grier" title="Mehgan Heaney-Grier">Mehgan Heaney-Grier</a></li> <li><a href="/wiki/Elisabeth_Kristoffersen" title="Elisabeth Kristoffersen">Elisabeth Kristoffersen</a></li> <li><a href="/wiki/Andriy_Yevhenovych_Khvetkevych" class="mw-redirect" title="Andriy Yevhenovych Khvetkevych">Andriy Yevhenovych Khvetkevych</a></li> <li><a href="/wiki/Lo%C3%AFc_Leferme" title="Loïc Leferme">Loïc Leferme</a></li> <li><a href="/wiki/Enzo_Maiorca" title="Enzo Maiorca">Enzo Maiorca</a></li> <li><a href="/wiki/Jacques_Mayol" title="Jacques Mayol">Jacques Mayol</a></li> <li><a href="/wiki/Audrey_Mestre" title="Audrey Mestre">Audrey Mestre</a></li> <li><a href="/wiki/Karol_Meyer" title="Karol Meyer">Karol Meyer</a></li> <li><a href="/wiki/Kate_Middleton_(free-diver)" title="Kate Middleton (free-diver)">Kate Middleton</a></li> <li><a href="/wiki/St%C3%A9phane_Mifsud" title="Stéphane Mifsud">Stéphane Mifsud</a></li> <li><a href="/wiki/Alexey_Molchanov" title="Alexey Molchanov">Alexey Molchanov</a></li> <li><a href="/wiki/Natalia_Molchanova" title="Natalia Molchanova">Natalia Molchanova</a></li> <li><a href="/wiki/Dave_Mullins_(freediver)" title="Dave Mullins (freediver)">Dave Mullins</a></li> <li><a href="/wiki/Patrick_Musimu" title="Patrick Musimu">Patrick Musimu</a></li> <li><a href="/wiki/Guillaume_N%C3%A9ry" title="Guillaume Néry">Guillaume Néry</a></li> <li><a href="/wiki/Herbert_Nitsch" title="Herbert Nitsch">Herbert Nitsch</a></li> <li><a href="/wiki/Umberto_Pelizzari" title="Umberto Pelizzari">Umberto Pelizzari</a></li> <li><a href="/wiki/Liv_Philip" title="Liv Philip">Liv Philip</a></li> <li><a href="/wiki/Annelie_Pompe" title="Annelie Pompe">Annelie Pompe</a></li> <li><a href="/wiki/Stig_Severinsen" title="Stig Severinsen">Stig Severinsen</a></li> <li><a href="/wiki/Tom_Sietas" title="Tom Sietas">Tom Sietas</a></li> <li><a href="/wiki/Aharon_Solomons" title="Aharon Solomons">Aharon Solomons</a></li> <li><a href="/wiki/Martin_%C5%A0t%C4%9Bp%C3%A1nek_(free-diver)" class="mw-redirect" title="Martin Štěpánek (free-diver)">Martin Štěpánek</a></li> <li><a href="/wiki/Walter_Steyn" title="Walter Steyn">Walter Steyn</a></li> <li><a href="/wiki/Tanya_Streeter" title="Tanya Streeter">Tanya Streeter</a></li> <li><a href="/wiki/William_Trubridge" title="William Trubridge">William Trubridge</a></li> <li><a href="/wiki/Devrim_Cenk_Ulusoy" title="Devrim Cenk Ulusoy">Devrim Cenk Ulusoy</a></li> <li><a href="/wiki/Fatma_Uruk" title="Fatma Uruk">Fatma Uruk</a></li> <li><a href="/wiki/Danai_Varveri" title="Danai Varveri">Danai Varveri</a></li> <li><a href="/wiki/Alessia_Zecchini" title="Alessia Zecchini">Alessia Zecchini</a></li> <li><a href="/wiki/Nataliia_Zharkova" title="Nataliia Zharkova">Nataliia Zharkova</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Hazards</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Barotrauma" title="Barotrauma">Barotrauma</a></li> <li><a href="/wiki/Drowning" title="Drowning">Drowning</a></li> <li><a href="/wiki/Freediving_blackout" title="Freediving blackout">Freediving blackout</a> <ul><li><a href="/wiki/Deep-water_blackout" class="mw-redirect" title="Deep-water blackout">Deep-water blackout</a></li> <li><a href="/wiki/Freediving_blackout#Terminology" title="Freediving blackout">Shallow-water blackout</a></li></ul></li> <li><a href="/wiki/Hypercapnia" title="Hypercapnia">Hypercapnia</a></li> <li><a href="/wiki/Hypothermia" title="Hypothermia">Hypothermia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Historical</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ama_(diving)" title="Ama (diving)">Ama</a></li> <li><a href="/wiki/Octopus_wrestling" title="Octopus wrestling">Octopus wrestling</a></li> <li><a href="/wiki/Swimming_at_the_1900_Summer_Olympics_%E2%80%93_Men%27s_underwater_swimming" title="Swimming at the 1900 Summer Olympics – Men's underwater swimming">Swimming at the 1900 Summer Olympics – Men's underwater swimming</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Organisations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AIDA_International" title="AIDA International">AIDA International</a></li> <li><a href="/wiki/Scuba_Schools_International" title="Scuba Schools International">Scuba Schools International</a></li> <li><a href="/wiki/Australian_Underwater_Federation" title="Australian Underwater Federation">Australian Underwater Federation</a></li> <li><a href="/wiki/British_Freediving_Association" title="British Freediving Association">British Freediving Association</a></li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a></li> <li><a href="/wiki/F%C3%A9d%C3%A9ration_Fran%C3%A7aise_d%27%C3%89tudes_et_de_Sports_Sous-Marins" title="Fédération Française d'Études et de Sports Sous-Marins">Fédération Française d'Études et de Sports Sous-Marins</a></li> <li><a href="/wiki/Performance_Freediving_International" title="Performance Freediving International">Performance Freediving International</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Professional_diving" style="font-size:114%;margin:0 4em"><a href="/wiki/Professional_diving" title="Professional diving">Professional diving</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Occupations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ama_(diving)" title="Ama (diving)">Ama</a></li> <li><a href="/wiki/Commercial_diver" class="mw-redirect" title="Commercial diver">Commercial diver</a> <ul><li><a href="/wiki/Commercial_offshore_diver" class="mw-redirect" title="Commercial offshore diver">Commercial offshore diver</a></li> <li><a href="/wiki/Hazmat_diver" class="mw-redirect" title="Hazmat diver">Hazmat diver</a></li></ul></li> <li><a href="/wiki/Divemaster" title="Divemaster">Divemaster</a></li> <li><a href="/wiki/Diving_instructor" title="Diving instructor">Diving instructor</a></li> <li><a href="/wiki/Diving_safety_officer" title="Diving safety officer">Diving safety officer</a></li> <li><a href="/wiki/Diving_superintendent" class="mw-redirect" title="Diving superintendent">Diving superintendent</a></li> <li><a href="/wiki/Diving_supervisor" title="Diving supervisor">Diving supervisor</a></li> <li><a href="/wiki/Haenyeo" title="Haenyeo">Haenyeo</a></li> <li><a href="/wiki/Media_diver" class="mw-redirect" title="Media diver">Media diver</a></li> <li><a href="/wiki/Police_diver" class="mw-redirect" title="Police diver">Police diver</a></li> <li><a href="/wiki/Public_safety_diver" class="mw-redirect" title="Public safety diver">Public safety diver</a></li> <li><a href="/wiki/Scientific_diver" class="mw-redirect" title="Scientific diver">Scientific diver</a></li> <li><a href="/wiki/Underwater_archaeologist" class="mw-redirect" title="Underwater archaeologist">Underwater archaeologist</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Militarydiving" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Military_diving" title="Military diving">Military<br />diving</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Army_engineer_diver" title="Army engineer diver">Army engineer diver</a></li> <li><a href="/wiki/Canadian_Armed_Forces_Divers" title="Canadian Armed Forces Divers">Canadian Armed Forces Divers</a></li> <li><a href="/wiki/Clearance_diver" title="Clearance diver">Clearance diver</a></li> <li><a href="/wiki/Frogman" title="Frogman">Frogman</a></li> <li><a href="/wiki/Minentaucher" title="Minentaucher">Minentaucher</a></li> <li><a href="/wiki/Royal_Navy_ships_diver" title="Royal Navy ships diver">Royal Navy ships diver</a></li> <li><a href="/wiki/United_States_military_divers" title="United States military divers">United States military divers</a> <ul><li><a href="/wiki/Navy_diver_(United_States_Navy)" title="Navy diver (United States Navy)">U.S. Navy diver</a></li> <li><a href="/wiki/Master_diver_(United_States_Navy)" title="Master diver (United States Navy)">U.S.Navy master diver</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Militarydivingunits" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_military_diving_units" title="List of military diving units">Military<br />diving<br />units</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Clearance_Diving_Branch_(RAN)" title="Clearance Diving Branch (RAN)">Clearance Diving Branch (RAN)</a></li> <li><a href="/wiki/Commando_Hubert" class="mw-redirect" title="Commando Hubert">Commando Hubert</a></li> <li><a href="/wiki/Lithuanian_Special_Operations_Force" title="Lithuanian Special Operations Force">Combat Divers Service (Lithuania)</a></li> <li><a href="/wiki/Comando_Raggruppamento_Subacquei_e_Incursori_Teseo_Tesei" title="Comando Raggruppamento Subacquei e Incursori Teseo Tesei">Comando Raggruppamento Subacquei e Incursori Teseo Tesei</a></li> <li><a href="/wiki/Decima_Flottiglia_MAS" title="Decima Flottiglia MAS">Decima Flottiglia MAS</a></li> <li><a href="/wiki/Frogman_Corps_(Denmark)" title="Frogman Corps (Denmark)">Frogman Corps (Denmark)</a></li> <li><a href="/wiki/Fuerzas_Especiales" title="Fuerzas Especiales">Fuerzas Especiales</a></li> <li><a href="/wiki/Fukuryu" title="Fukuryu">Fukuryu</a></li> <li><a href="/wiki/GRUMEC" title="GRUMEC">GRUMEC</a></li> <li><a href="/wiki/Grup_Gerak_Khas" class="mw-redirect" title="Grup Gerak Khas">Grup Gerak Khas</a></li> <li><a href="/wiki/Jagdkommando" title="Jagdkommando">Jagdkommando</a></li> <li><a href="/wiki/JW_Formoza" class="mw-redirect" title="JW Formoza">JW Formoza</a></li> <li><a href="/wiki/JW_GROM" class="mw-redirect" title="JW GROM">JW GROM</a></li> <li><a href="/wiki/JW_Komandos%C3%B3w" class="mw-redirect" title="JW Komandosów">JW Komandosów</a></li> <li><a href="/wiki/Kommando_Spezialkr%C3%A4fte_Marine" title="Kommando Spezialkräfte Marine">Kommando Spezialkräfte Marine</a></li> <li><a href="/wiki/KOPASKA" title="KOPASKA">KOPASKA</a></li> <li><a href="/wiki/MARCOS" title="MARCOS">MARCOS</a></li> <li><a href="/wiki/Marine_Commandos" title="Marine Commandos">Marine Commandos</a></li> <li><a href="/wiki/Marinejegerkommandoen" title="Marinejegerkommandoen">Marinejegerkommandoen</a></li> <li><a href="/wiki/Marine_Raider_Regiment" title="Marine Raider Regiment">Marine Raider Regiment</a></li> <li><a href="/wiki/Minedykkerkommandoen" title="Minedykkerkommandoen">Minedykkerkommandoen</a></li> <li><a href="/wiki/Namibian_Marine_Corps#Operational_Diving_Unit" title="Namibian Marine Corps">Namibian Marine Corps Operational Diving Unit</a></li> <li><a href="/wiki/Naval_Diving_Unit_(Singapore)" title="Naval Diving Unit (Singapore)">Naval Diving Unit (Singapore)</a></li> <li><a href="/wiki/Naval_Service_Diving_Section" title="Naval Service Diving Section">Naval Service Diving Section</a></li> <li><a href="/wiki/Naval_Special_Operations_Command" title="Naval Special Operations Command">Naval Special Operations Command</a></li> <li><a href="/wiki/Operational_Diving_Division_(SA_Navy)" title="Operational Diving Division (SA Navy)">Operational Diving Division (SA Navy)</a></li> <li><a href="/wiki/Royal_Engineers" title="Royal Engineers">Royal Engineers</a></li> <li><a href="/wiki/Russian_commando_frogmen" title="Russian commando frogmen">Russian commando frogmen</a></li> <li><a href="/wiki/Sappers_Divers_Group" title="Sappers Divers Group">Sappers Divers Group</a></li> <li><a href="/wiki/Shayetet_13" title="Shayetet 13">Shayetet 13</a></li> <li><a href="/wiki/Special_Air_Service" title="Special Air Service">Special Air Service</a></li> <li><a href="/wiki/Special_Air_Service_Regiment" title="Special Air Service Regiment">Special Air Service Regiment</a></li> <li><a href="/wiki/Special_Actions_Detachment" title="Special Actions Detachment">Special Actions Detachment</a></li> <li><a href="/wiki/Special_Boat_Service" title="Special Boat Service">Special Boat Service</a></li> <li><a href="/wiki/Special_Boat_Squadron_(Sri_Lanka)" title="Special Boat Squadron (Sri Lanka)">Special Boat Squadron (Sri Lanka)</a></li> <li><a href="/wiki/Special_Forces_Command_(Turkey)" title="Special Forces Command (Turkey)">Special Forces Command (Turkey)</a></li> <li><a href="/wiki/Special_Forces_Group_(Belgium)" title="Special Forces Group (Belgium)">Special Forces Group (Belgium)</a></li> <li><a href="/wiki/Special_Operations_Battalion_(Croatia)" title="Special Operations Battalion (Croatia)">Special Operations Battalion (Croatia)</a></li> <li><a href="/wiki/Special_Service_Group_(Navy)" title="Special Service Group (Navy)">Special Service Group (Navy)</a></li> <li><a href="/wiki/Special_Warfare_Diving_and_Salvage" title="Special Warfare Diving and Salvage">Special Warfare Diving and Salvage</a></li> <li><a href="/wiki/Tactical_Divers_Group" title="Tactical Divers Group">Tactical Divers Group</a></li> <li><a href="/wiki/United_States_Marine_Corps_Force_Reconnaissance" title="United States Marine Corps Force Reconnaissance">US Marine Corps Force Reconnaissance</a></li> <li><a href="/wiki/United_States_Marine_Corps_Reconnaissance_Battalions" title="United States Marine Corps Reconnaissance Battalions">US Marine Corps Reconnaissance Battalions</a></li> <li><a href="/wiki/United_States_Navy_SEALs" title="United States Navy SEALs">US Navy SEALs</a></li> <li><a href="/wiki/Underwater_Construction_Teams" title="Underwater Construction Teams">Underwater Construction Teams</a></li> <li><a href="/wiki/Underwater_Demolition_Command" title="Underwater Demolition Command">Underwater Demolition Command</a></li> <li><a href="/wiki/Underwater_Demolition_Team" title="Underwater Demolition Team">Underwater Demolition Team</a></li> <li><a href="/wiki/Underwater_Offence_(Turkish_Armed_Forces)" title="Underwater Offence (Turkish Armed Forces)">Underwater Offence (Turkish Armed Forces)</a></li> <li><a href="/wiki/UNGERIN" title="UNGERIN">UNGERIN</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Underwater_work" title="Underwater work">Underwater<br />work</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Commercial_offshore_diving" title="Commercial offshore diving">Commercial offshore diving</a></li> <li><a href="/wiki/Dive_leader" title="Dive leader">Dive leader</a></li> <li><a href="/wiki/Diver_training" title="Diver training">Diver training</a> <ul><li><a href="/wiki/Recreational_diver_training" title="Recreational diver training">Recreational diver training</a></li></ul></li> <li><a href="/wiki/Hazmat_diving" title="Hazmat diving">Hazmat diving</a></li> <li><a href="/wiki/Hyperbaric_welding" title="Hyperbaric welding">Hyperbaric welding</a></li> <li><a href="/wiki/Marine_construction" title="Marine construction">Marine construction</a> <ul><li><a href="/wiki/Offshore_construction" title="Offshore construction">Offshore construction</a></li> <li><a href="/wiki/Underwater_construction" title="Underwater construction">Underwater construction</a></li></ul></li> <li><a href="/wiki/Media_diving" title="Media diving">Media diving</a></li> <li><a href="/wiki/Pearl_hunting" title="Pearl hunting">Pearl hunting</a></li> <li><a href="/wiki/Police_diving" title="Police diving">Police diving</a></li> <li><a href="/wiki/Potable_water_diving" title="Potable water diving">Potable water diving</a></li> <li><a href="/wiki/Public_safety_diving" title="Public safety diving">Public safety diving</a></li> <li><a href="/wiki/Scientific_diving" title="Scientific diving">Scientific diving</a></li> <li><a href="/wiki/Ships_husbandry" title="Ships husbandry">Ships husbandry</a></li> <li><a href="/wiki/Sponge_diving" title="Sponge diving">Sponge diving</a></li> <li><a href="/wiki/Submarine_pipeline" title="Submarine pipeline">Submarine pipeline</a></li> <li><a href="/wiki/Underwater_archaeology" title="Underwater archaeology">Underwater archaeology</a> <ul><li><a href="/wiki/Archaeology_of_shipwrecks" title="Archaeology of shipwrecks">Archaeology of shipwrecks</a></li></ul></li> <li><a href="/wiki/Underwater_cutting_and_welding" title="Underwater cutting and welding">Underwater cutting and welding</a></li> <li><a href="/wiki/Underwater_demolition" title="Underwater demolition">Underwater demolition</a></li> <li><a href="/wiki/Underwater_inspection" class="mw-redirect" title="Underwater inspection">Underwater inspection</a> <ul><li><a href="/wiki/Nondestructive_testing" title="Nondestructive testing">Nondestructive testing</a></li></ul></li> <li><a href="/wiki/Underwater_logging" title="Underwater logging">Underwater logging</a></li> <li><a href="/wiki/Underwater_photography" title="Underwater photography">Underwater photography</a></li> <li><a href="/wiki/Underwater_search_and_recovery" title="Underwater search and recovery">Underwater search and recovery</a> <ul><li><a href="/wiki/Underwater_searches" title="Underwater searches">Underwater searches</a></li></ul></li> <li><a href="/wiki/Underwater_videography" title="Underwater videography">Underwater videography</a></li> <li><a href="/wiki/Underwater_survey" title="Underwater survey">Underwater survey</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Salvage_diving" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Salvage_diving" title="Salvage diving">Salvage diving</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SS_Egypt" title="SS Egypt">SS <i>Egypt</i></a></li> <li><a href="/wiki/Kronan_(ship)" title="Kronan (ship)"><i>Kronan</i></a></li> <li><a href="/wiki/La_Belle_(ship)" title="La Belle (ship)"><i>La Belle</i></a></li> <li><a href="/wiki/SS_Laurentic_(1908)" title="SS Laurentic (1908)">SS <i>Laurentic</i></a></li> <li><a href="/wiki/RMS_Lusitania" title="RMS Lusitania">RMS <i>Lusitania</i></a></li> <li><a href="/wiki/Swedish_warship_Mars" title="Swedish warship Mars"><i>Mars</i></a></li> <li><a href="/wiki/Mary_Rose" title="Mary Rose"><i>Mary Rose</i></a></li> <li><a href="/wiki/USS_Monitor" title="USS Monitor">USS <i>Monitor</i></a></li> <li><a href="/wiki/HMS_Royal_George_(1756)" title="HMS Royal George (1756)">HMS <i>Royal George</i></a></li> <li><a href="/wiki/Vasa_(ship)" title="Vasa (ship)"><i>Vasa</i></a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_contractor" class="mw-redirect" title="Diving contractor">Diving<br />contractors</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Compagnie_maritime_d%27expertises" title="Compagnie maritime d'expertises">COMEX</a></li> <li><a href="/wiki/Helix_Energy_Solutions_Group" title="Helix Energy Solutions Group">Helix Energy Solutions Group</a></li> <li><a href="/wiki/International_Marine_Contractors_Association" title="International Marine Contractors Association">International Marine Contractors Association</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tools and<br />equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abrasive_waterjet" class="mw-redirect" title="Abrasive waterjet">Abrasive waterjet</a></li> <li><a href="/wiki/Airlift_(dredging_device)" title="Airlift (dredging device)">Airlift</a></li> <li><a href="/wiki/Baited_remote_underwater_video" title="Baited remote underwater video">Baited remote underwater video</a></li> <li><a href="/wiki/In-water_surface_cleaning" title="In-water surface cleaning">In-water surface cleaning</a> <ul><li>Brush cart</li> <li><a href="/w/index.php?title=Cavitation_cleaning&action=edit&redlink=1" class="new" title="Cavitation cleaning (page does not exist)">Cavitation cleaning</a></li> <li><a href="/wiki/Pressure_washing" title="Pressure washing">Pressure washing</a></li> <li><a href="/wiki/Pigging" title="Pigging">Pigging</a></li></ul></li> <li><a href="/wiki/Hot_stab" title="Hot stab">Hot stab</a></li> <li><a href="/wiki/Lifting_bag" title="Lifting bag">Lifting bag</a></li> <li><a href="/wiki/Remotely_operated_underwater_vehicle" title="Remotely operated underwater vehicle">Remotely operated underwater vehicle</a></li> <li><a href="/wiki/Thermal_lance" title="Thermal lance">Thermal lance</a></li> <li><a href="/wiki/Tremie" title="Tremie">Tremie</a></li> <li><a href="/w/index.php?title=Water_jetting&action=edit&redlink=1" class="new" title="Water jetting (page does not exist)">Water jetting</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater<br />weapons</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Limpet_mine" title="Limpet mine">Limpet mine</a></li> <li><a href="/wiki/Speargun" title="Speargun">Speargun</a> <ul><li><a href="/wiki/Hawaiian_sling" title="Hawaiian sling">Hawaiian sling</a></li> <li><a href="/wiki/Polespear" title="Polespear">Polespear</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Underwaterfirearm" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Underwater_firearm" title="Underwater firearm">Underwater<br />firearm</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gyrojet" title="Gyrojet">Gyrojet</a></li> <li><a href="/wiki/Mk_1_Underwater_Defense_Gun" title="Mk 1 Underwater Defense Gun">Mk 1 Underwater Defense Gun</a></li> <li><a href="/wiki/Powerhead_(firearm)" title="Powerhead (firearm)">Powerhead</a></li> <li>Underwater pistols <ul><li><a href="/wiki/Heckler_%26_Koch_P11" title="Heckler & Koch P11">Heckler & Koch P11</a></li> <li><a href="/wiki/SPP-1_underwater_pistol" title="SPP-1 underwater pistol">SPP-1 underwater pistol</a></li></ul></li> <li>Underwater revolvers <ul><li><a href="/wiki/AAI_underwater_revolver" title="AAI underwater revolver">AAI underwater revolver</a></li></ul></li> <li>Underwater rifles <ul><li><a href="/wiki/ADS_amphibious_rifle" title="ADS amphibious rifle">ADS amphibious rifle</a></li> <li><a href="/wiki/APS_underwater_rifle" title="APS underwater rifle">APS underwater rifle</a></li> <li><a href="/wiki/ASM-DT_amphibious_rifle" title="ASM-DT amphibious rifle">ASM-DT amphibious rifle</a></li> <li><a href="/wiki/QBS-06" title="QBS-06">QBS-06</a></li></ul></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Recreational_diving" style="font-size:114%;margin:0 4em"><a href="/wiki/Recreational_diving" title="Recreational diving">Recreational diving</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Recreational_dive_sites" title="Recreational dive sites">Recreational dive sites</a></li> <li><a href="/wiki/Index_of_recreational_dive_sites" title="Index of recreational dive sites">Index of recreational dive sites</a></li> <li><a href="/wiki/List_of_wreck_diving_sites" title="List of wreck diving sites">List of wreck diving sites</a></li> <li><a href="/wiki/Outline_of_recreational_dive_sites" title="Outline of recreational dive sites">Outline of recreational dive sites</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Specialties</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Altitude_diving" title="Altitude diving">Altitude diving</a></li> <li><a href="/wiki/Cave_diving" title="Cave diving">Cave diving</a></li> <li><a href="/wiki/Deep_diving" title="Deep diving">Deep diving</a></li> <li><a href="/wiki/Ice_diving" title="Ice diving">Ice diving</a></li> <li><a href="/wiki/Muck_diving" title="Muck diving">Muck diving</a></li> <li><a href="/wiki/Open-water_diving" title="Open-water diving">Open-water diving</a></li> <li><a href="/wiki/Rebreather_diving" title="Rebreather diving">Rebreather diving</a></li> <li><a href="/wiki/Sidemount_diving" title="Sidemount diving">Sidemount diving</a></li> <li><a href="/wiki/Solo_diving" title="Solo diving">Solo diving</a></li> <li><a href="/wiki/Technical_diving" title="Technical diving">Technical diving</a></li> <li><a href="/wiki/Underwater_photography" title="Underwater photography">Underwater photography</a></li> <li><a href="/wiki/Wreck_diving" title="Wreck diving">Wreck diving</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diver_organisations" title="Diver organisations">Diver<br />organisations</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/British_Sub-Aqua_Club" title="British Sub-Aqua Club">British Sub-Aqua Club</a> (BSAC)</li> <li><a href="/wiki/Cave_Divers_Association_of_Australia" title="Cave Divers Association of Australia">Cave Divers Association of Australia</a> (CDAA)</li> <li><a href="/wiki/Cave_Diving_Group" title="Cave Diving Group">Cave Diving Group</a> (CDG)</li> <li><a href="/wiki/Comhairle_Fo-Thuinn" title="Comhairle Fo-Thuinn">Comhairle Fo-Thuinn</a> (CFT)</li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a> (CMAS)</li> <li><a href="/wiki/Federaci%C3%B3n_Espa%C3%B1ola_de_Actividades_Subacu%C3%A1ticas" title="Federación Española de Actividades Subacuáticas">Federación Española de Actividades Subacuáticas</a> (FEDAS)</li> <li><a href="/wiki/F%C3%A9d%C3%A9ration_Fran%C3%A7aise_d%27%C3%89tudes_et_de_Sports_Sous-Marins" title="Fédération Française d'Études et de Sports Sous-Marins">Fédération Française d'Études et de Sports Sous-Marins</a> (FFESSM)</li> <li><a href="/wiki/International_Association_for_Handicapped_Divers" title="International Association for Handicapped Divers">International Association for Handicapped Divers</a> (IAHD)</li> <li><a href="/wiki/Quintana_Roo_Speleological_Survey" title="Quintana Roo Speleological Survey">Quintana Roo Speleological Survey</a> (QRSS)</li> <li><a href="/wiki/Woodville_Karst_Plain_Project" title="Woodville Karst Plain Project">Woodville Karst Plain Project</a> (WKPP)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Diving tourism<br />industry</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dive_center" title="Dive center">Dive center</a></li> <li><a href="/wiki/Diving_in_East_Timor" title="Diving in East Timor">Diving in East Timor</a></li> <li><a href="/wiki/Diving_in_the_Maldives" title="Diving in the Maldives">Diving in the Maldives</a></li> <li><a href="/wiki/Environmental_impact_of_recreational_diving" title="Environmental impact of recreational diving">Environmental impact of recreational diving</a></li> <li><a href="/wiki/Scuba_diving_tourism" title="Scuba diving tourism">Scuba diving tourism</a></li> <li><a href="/wiki/Scuba_diving_in_the_Cayman_Islands" title="Scuba diving in the Cayman Islands">Scuba diving in the Cayman Islands</a></li> <li><a href="/wiki/Shark_tourism" title="Shark tourism">Shark tourism</a></li> <li><a href="/wiki/Sinking_ships_for_wreck_diving_sites" title="Sinking ships for wreck diving sites">Sinking ships for wreck diving sites</a></li> <li><a href="/wiki/Underwater_diving_on_Guam" class="mw-redirect" title="Underwater diving on Guam">Underwater diving on Guam</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Diving events<br />and festivals</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diversnight" title="Diversnight">Diversnight</a></li> <li><a href="/wiki/Underwater_Bike_Race" title="Underwater Bike Race">Underwater Bike Race</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Diving_safety" style="font-size:114%;margin:0 4em"><a href="/wiki/Diving_safety" title="Diving safety">Diving safety</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Human_factors_in_diving_equipment_design" title="Human factors in diving equipment design">Human factors in diving equipment design</a></li> <li><a href="/wiki/Human_factors_in_diving_safety" title="Human factors in diving safety">Human factors in diving safety</a></li> <li><a href="/wiki/Life-support_system" title="Life-support system">Life-support system</a></li> <li><a href="/wiki/Safety-critical_system" title="Safety-critical system">Safety-critical system</a></li> <li><a href="/wiki/Scuba_diving_fatalities" title="Scuba diving fatalities">Scuba diving fatalities</a></li> <li><a href="/wiki/Underwater_diving_emergency" title="Underwater diving emergency">Underwater diving emergency</a></li> <li><a href="/wiki/Water_safety" title="Water safety">Water safety</a></li> <li><a href="/wiki/Water_surface_searches" title="Water surface searches">Water surface searches</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_hazards" title="Diving hazards">Diving<br />hazards</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_diving_hazards_and_precautions" title="List of diving hazards and precautions">List of diving hazards and precautions</a></li> <li><a href="/wiki/Hazards_of_the_diving_environment" class="mw-redirect" title="Hazards of the diving environment">Environmental</a> <ul><li><a href="/wiki/Ocean_current" title="Ocean current">Current</a></li> <li><a href="/wiki/Delta-P_(hazard)" class="mw-redirect" title="Delta-P (hazard)">Delta-P</a></li> <li><a href="/wiki/Entanglement_(hazard)" class="mw-redirect" title="Entanglement (hazard)">Entanglement hazard</a></li> <li><a href="/wiki/Penetration_diving" title="Penetration diving">Overhead</a></li> <li><a href="/wiki/Silt_out" title="Silt out">Silt out</a></li> <li><a href="/wiki/Wave_action" class="mw-redirect" title="Wave action">Wave action</a></li></ul></li> <li>Equipment <ul><li><a href="/wiki/Freeflow" title="Freeflow">Freeflow</a></li> <li><a href="/wiki/List_of_diving_hazards_and_precautions#Use_of_breathing_equipment_in_an_underwater_environment" title="List of diving hazards and precautions">Use of breathing equipment in an underwater environment</a></li> <li><a href="/wiki/List_of_diving_hazards_and_precautions#Failure_of_diving_equipment_other_than_breathing_apparatus" title="List of diving hazards and precautions">Failure of diving equipment other than breathing apparatus</a></li> <li><a href="/wiki/Single_point_of_failure" title="Single point of failure">Single point of failure</a></li></ul></li> <li>Physiological <ul><li><a href="/wiki/Cold_shock_response" title="Cold shock response">Cold shock response</a></li> <li><a href="/wiki/Decompression_(diving)" title="Decompression (diving)">Decompression</a></li> <li><a href="/wiki/Nitrogen_narcosis" title="Nitrogen narcosis">Nitrogen narcosis</a></li> <li><a class="mw-selflink selflink">Oxygen toxicity</a></li> <li><a href="/wiki/Seasickness" class="mw-redirect" title="Seasickness">Seasickness</a></li> <li><a href="/wiki/Uncontrolled_decompression" title="Uncontrolled decompression">Uncontrolled decompression</a></li></ul></li> <li><a href="/wiki/List_of_diving_hazards_and_precautions#Diver_behaviour_and_competence" title="List of diving hazards and precautions">Diver behaviour and competence</a> <ul><li>Lack of <a href="/wiki/Competence_(human_resources)" title="Competence (human resources)">competence</a></li> <li><a href="/wiki/Overconfidence_effect" title="Overconfidence effect">Overconfidence effect</a></li> <li><a href="/wiki/Panic" title="Panic">Panic</a></li> <li><a href="/wiki/Task_loading" title="Task loading">Task loading</a></li> <li><a href="/wiki/Anxiety#Trait" title="Anxiety">Trait anxiety</a></li> <li><a href="/wiki/Willful_violation" title="Willful violation">Willful violation</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Consequences" scope="row" class="navbox-group" style="width:1%">Consequences</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Barotrauma" title="Barotrauma">Barotrauma</a></li> <li><a href="/wiki/Decompression_sickness" title="Decompression sickness">Decompression sickness</a></li> <li><a href="/wiki/Drowning" title="Drowning">Drowning</a></li> <li><a href="/wiki/Hypothermia" title="Hypothermia">Hypothermia</a></li> <li><a href="/wiki/Hypoxia_(medical)" class="mw-redirect" title="Hypoxia (medical)">Hypoxia</a></li> <li><a href="/wiki/Hypercapnia" title="Hypercapnia">Hypercapnia</a></li> <li><a href="/wiki/Hyperthermia" title="Hyperthermia">Hyperthermia</a></li> <li><a href="/wiki/Non-freezing_cold_injury" title="Non-freezing cold injury">Non-freezing cold injury</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_procedures" title="Diving procedures">Diving<br />procedures</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ascending_and_descending_(diving)" title="Ascending and descending (diving)">Ascending and descending</a> <ul><li><a href="/wiki/Emergency_ascent" title="Emergency ascent">Emergency ascent</a></li></ul></li> <li><a href="/wiki/Boat_diving" class="mw-redirect" title="Boat diving">Boat diving</a> <ul><li><a href="/wiki/Canoe_and_kayak_diving" title="Canoe and kayak diving">Canoe and kayak diving</a></li></ul></li> <li><a href="/wiki/Buddy_diving" title="Buddy diving">Buddy diving</a> <ul><li><a href="/wiki/Buddy_check" title="Buddy check">buddy check</a></li></ul></li> <li><a href="/wiki/Decompression_(diving)" title="Decompression (diving)">Decompression</a> <ul><li><a href="/wiki/Decompression_practice" title="Decompression practice">Decompression practice</a></li> <li><a href="/wiki/Pyle_stop" title="Pyle stop">Pyle stop</a></li> <li><a href="/wiki/Ratio_decompression" title="Ratio decompression">Ratio decompression</a></li></ul></li> <li><a href="/wiki/Dive_briefing" title="Dive briefing">Dive briefing</a></li> <li><a href="/wiki/Dive_log" title="Dive log">Dive log</a></li> <li><a href="/wiki/Dive_planning" title="Dive planning">Dive planning</a> <ul><li><a href="/wiki/Rule_of_thirds_(diving)" title="Rule of thirds (diving)">Rule of thirds</a></li> <li><a href="/wiki/Scuba_gas_planning" title="Scuba gas planning">Scuba gas planning</a></li></ul></li> <li><a href="/wiki/Diver_communications" title="Diver communications">Diver communications</a></li> <li><a href="/wiki/Diver_rescue" title="Diver rescue">Diver rescue</a></li> <li><a href="/wiki/Diver_training" title="Diver training">Diver training</a></li> <li><a href="/wiki/Doing_It_Right_(scuba_diving)" title="Doing It Right (scuba diving)">Doing It Right</a></li> <li><a href="/wiki/Drift_diving" title="Drift diving">Drift diving</a></li> <li><a href="/wiki/Gas_blending_for_scuba_diving" title="Gas blending for scuba diving">Gas blending for scuba diving</a></li> <li><a href="/wiki/Night_diving" title="Night diving">Night diving</a></li> <li><a href="/wiki/Rebreather_diving" title="Rebreather diving">Rebreather diving</a></li> <li><a href="/wiki/Scuba_gas_management" title="Scuba gas management">Scuba gas management</a></li> <li><a href="/wiki/Solo_diving" title="Solo diving">Solo diving</a></li> <li><a href="/wiki/Wall_diving" title="Wall diving">Wall diving</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Risk_management" title="Risk management">Risk<br />management</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Checklist" title="Checklist">Checklist</a></li> <li>Hazard identification and risk assessment <ul><li><a href="/wiki/Hazard_analysis" title="Hazard analysis">Hazard analysis</a></li> <li><a href="/wiki/Job_safety_analysis" title="Job safety analysis">Job safety analysis</a></li> <li><a href="/wiki/Risk_assessment" title="Risk assessment">Risk assessment</a></li></ul></li> <li><a href="/wiki/Hyperbaric_evacuation_and_rescue" title="Hyperbaric evacuation and rescue">Hyperbaric evacuation and rescue</a></li> <li><a href="/wiki/Risk_control" title="Risk control">Risk control</a> <ul><li><a href="/wiki/Hierarchy_of_hazard_controls" title="Hierarchy of hazard controls">Hierarchy of hazard controls</a></li></ul></li> <li><a href="/wiki/Incident_pit" title="Incident pit">Incident pit</a></li> <li><a href="/wiki/Lockout%E2%80%93tagout" title="Lockout–tagout">Lockout–tagout</a></li> <li><a href="/wiki/Permit_To_Work" class="mw-redirect" title="Permit To Work">Permit To Work</a></li> <li><a href="/wiki/Redundancy_(engineering)" title="Redundancy (engineering)">Redundancy</a></li> <li><a href="/wiki/Safety_data_sheet" title="Safety data sheet">Safety data sheet</a></li> <li><a href="/wiki/Situation_awareness" title="Situation awareness">Situation awareness</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_team" title="Diving team">Diving team</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bellman_(diving)" class="mw-redirect" title="Bellman (diving)">Bellman</a></li> <li><a href="/wiki/Chamber_operator" class="mw-redirect" title="Chamber operator">Chamber operator</a></li> <li><a href="/wiki/Diver_medical_technician" class="mw-redirect" title="Diver medical technician">Diver medical technician</a></li> <li><a href="/wiki/Diver%27s_attendant" class="mw-redirect" title="Diver's attendant">Diver's attendant</a></li> <li><a href="/wiki/Diving_supervisor" title="Diving supervisor">Diving supervisor</a></li> <li><a href="/wiki/Diving_systems_technician" class="mw-redirect" title="Diving systems technician">Diving systems technician</a></li> <li><a href="/wiki/Gas_man" class="mw-redirect" title="Gas man">Gas man</a></li> <li><a href="/wiki/Life_support_technician" class="mw-redirect" title="Life support technician">Life support technician</a></li> <li><a href="/wiki/Stand-by_diver" class="mw-redirect" title="Stand-by diver">Stand-by diver</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Equipment<br />safety</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Breathing_gas_quality" class="mw-redirect" title="Breathing gas quality">Breathing gas quality</a></li> <li><a href="/wiki/Testing_and_inspection_of_diving_cylinders" title="Testing and inspection of diving cylinders">Testing and inspection of diving cylinders</a> <ul><li><a href="/wiki/Hydrostatic_test" title="Hydrostatic test">Hydrostatic test</a></li> <li><a href="/wiki/Sustained_load_cracking" title="Sustained load cracking">Sustained load cracking</a></li></ul></li> <li><a href="/wiki/Diving_regulator" title="Diving regulator">Diving regulator</a> <ul><li><a href="/wiki/Breathing_performance_of_regulators" title="Breathing performance of regulators">Breathing performance of regulators</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Occupational_safety_and_health" title="Occupational safety and health">Occupational<br />safety and<br />health</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Association_of_Diving_Contractors_International" title="Association of Diving Contractors International">Association of Diving Contractors International</a></li> <li><a href="/wiki/International_Marine_Contractors_Association" title="International Marine Contractors Association">International Marine Contractors Association</a></li> <li><a href="/wiki/Code_of_practice" title="Code of practice">Code of practice</a></li> <li><a href="/wiki/Contingency_plan" title="Contingency plan">Contingency plan</a></li> <li><a href="/wiki/Diving_regulations" title="Diving regulations">Diving regulations</a></li> <li><a href="/wiki/Emergency_response_plan" class="mw-redirect" title="Emergency response plan">Emergency response plan</a></li> <li><a href="/wiki/Diving_safety_officer" title="Diving safety officer">Diving safety officer</a></li> <li><a href="/wiki/Diving_superintendent" class="mw-redirect" title="Diving superintendent">Diving superintendent</a></li> <li><a href="/wiki/Diving_supervisor" title="Diving supervisor">Diving supervisor</a></li> <li><a href="/wiki/Operations_manual" title="Operations manual">Operations manual</a></li> <li><a href="/wiki/Standard_operating_procedure" title="Standard operating procedure">Standard operating procedure</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible uncollapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Diving_medicine" style="font-size:114%;margin:0 4em"><a href="/wiki/Diving_medicine" title="Diving medicine">Diving medicine</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_disorders" title="Diving disorders">Diving<br />disorders</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_signs_and_symptoms_of_diving_disorders" title="List of signs and symptoms of diving disorders">List of signs and symptoms of diving disorders</a></li> <li><a href="/wiki/Cramp" title="Cramp">Cramp</a></li> <li><a href="/wiki/Motion_sickness" title="Motion sickness">Motion sickness</a></li> <li><a href="/wiki/Surfer%27s_ear" title="Surfer's ear">Surfer's ear</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Pressure<br />related</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternobaric_vertigo" title="Alternobaric vertigo">Alternobaric vertigo</a></li> <li><a href="/wiki/Barostriction" class="mw-redirect" title="Barostriction">Barostriction</a></li> <li><a href="/wiki/Barotrauma" title="Barotrauma">Barotrauma</a> <ul><li><a href="/wiki/Air_embolism" title="Air embolism">Air embolism</a></li> <li><a href="/wiki/Aerosinusitis" title="Aerosinusitis">Aerosinusitis</a></li> <li><a href="/wiki/Barodontalgia" title="Barodontalgia">Barodontalgia</a></li> <li><a href="/wiki/Dental_barotrauma" class="mw-redirect" title="Dental barotrauma">Dental barotrauma</a></li> <li><a href="/wiki/Middle_ear_barotrauma" title="Middle ear barotrauma">Middle ear barotrauma</a></li> <li><a href="/wiki/Pulmonary_barotrauma" class="mw-redirect" title="Pulmonary barotrauma">Pulmonary barotrauma</a></li></ul></li> <li><a href="/wiki/Compression_arthralgia" title="Compression arthralgia">Compression arthralgia</a></li> <li><a href="/wiki/Decompression_illness" title="Decompression illness">Decompression illness</a></li> <li><a href="/wiki/Dysbarism" title="Dysbarism">Dysbarism</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Oxygen</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Freediving_blackout" title="Freediving blackout">Freediving blackout</a></li> <li><a href="/wiki/Hyperoxia" title="Hyperoxia">Hyperoxia</a></li> <li><a href="/wiki/Hypoxia_(medical)" class="mw-redirect" title="Hypoxia (medical)">Hypoxia</a></li> <li><a class="mw-selflink selflink">Oxygen toxicity</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Inert gases</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Avascular_necrosis" title="Avascular necrosis">Avascular necrosis</a></li> <li><a href="/wiki/Decompression_sickness" title="Decompression sickness">Decompression sickness</a> <ul><li><a href="/wiki/Dysbaric_osteonecrosis" title="Dysbaric osteonecrosis">Dysbaric osteonecrosis</a></li> <li><a href="/wiki/Inner_ear_decompression_sickness" title="Inner ear decompression sickness">Inner ear decompression sickness</a></li> <li><a href="/wiki/Isobaric_counterdiffusion" title="Isobaric counterdiffusion">Isobaric counterdiffusion</a></li> <li><a href="/wiki/Taravana" title="Taravana">Taravana</a></li></ul></li> <li><a href="/wiki/High-pressure_nervous_syndrome" title="High-pressure nervous syndrome">High-pressure nervous syndrome</a></li> <li><a href="/wiki/Hydrogen_narcosis" title="Hydrogen narcosis">Hydrogen narcosis</a></li> <li><a href="/wiki/Nitrogen_narcosis" title="Nitrogen narcosis">Nitrogen narcosis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Carbon dioxide</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hypercapnia" title="Hypercapnia">Hypercapnia</a></li> <li><a href="/wiki/Hypocapnia" title="Hypocapnia">Hypocapnia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Breathing gas<br />contaminants</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Carbon_monoxide_poisoning" title="Carbon monoxide poisoning">Carbon monoxide poisoning</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Immersion<br />related</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Asphyxia" title="Asphyxia">Asphyxia</a></li> <li><a href="/wiki/Drowning" title="Drowning">Drowning</a></li> <li><a href="/wiki/Hypothermia" title="Hypothermia">Hypothermia</a></li> <li><a href="/wiki/Immersion_diuresis" class="mw-redirect" title="Immersion diuresis">Immersion diuresis</a></li> <li><a href="/wiki/Instinctive_drowning_response" title="Instinctive drowning response">Instinctive drowning response</a></li> <li><a href="/wiki/Laryngospasm" title="Laryngospasm">Laryngospasm</a></li> <li><a href="/wiki/Salt_water_aspiration_syndrome" title="Salt water aspiration syndrome">Salt water aspiration syndrome</a></li> <li><a href="/wiki/Swimming-induced_pulmonary_edema" title="Swimming-induced pulmonary edema">Swimming-induced pulmonary edema</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Treatment</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Demand_valve_oxygen_therapy" title="Demand valve oxygen therapy">Demand valve oxygen therapy</a></li> <li><a href="/wiki/First_aid" title="First aid">First aid</a></li> <li><a href="/wiki/Hyperbaric_medicine" title="Hyperbaric medicine">Hyperbaric medicine</a></li> <li><a href="/wiki/Hyperbaric_treatment_schedules" title="Hyperbaric treatment schedules">Hyperbaric treatment schedules</a></li> <li><a href="/wiki/In-water_recompression" title="In-water recompression">In-water recompression</a></li> <li><a href="/wiki/Oxygen_therapy" title="Oxygen therapy">Oxygen therapy</a></li> <li><a href="/wiki/Therapeutic_recompression" class="mw-redirect" title="Therapeutic recompression">Therapeutic recompression</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Personnel</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_Medical_Examiner" class="mw-redirect" title="Diving Medical Examiner">Diving Medical Examiner</a></li> <li><a href="/wiki/Diving_Medical_Practitioner" class="mw-redirect" title="Diving Medical Practitioner">Diving Medical Practitioner</a></li> <li><a href="/wiki/Diving_Medical_Technician" class="mw-redirect" title="Diving Medical Technician">Diving Medical Technician</a></li> <li><a href="/wiki/Hyperbaric_nursing" title="Hyperbaric nursing">Hyperbaric nursing</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Screening</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Atrial_septal_defect" title="Atrial septal defect">Atrial septal defect</a></li> <li><a href="/wiki/Effects_of_drugs_on_fitness_to_dive" class="mw-redirect" title="Effects of drugs on fitness to dive">Effects of drugs on fitness to dive</a></li> <li><a href="/wiki/Fitness_to_dive" title="Fitness to dive">Fitness to dive</a></li> <li><a href="/wiki/Psychological_fitness_to_dive" class="mw-redirect" title="Psychological fitness to dive">Psychological fitness to dive</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Research</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_researchers_in_diving_physiology_and_medicine" class="mw-redirect" title="List of researchers in diving physiology and medicine">Researchers in<br />diving physiology<br />and medicine</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arthur_J._Bachrach" title="Arthur J. Bachrach">Arthur J. Bachrach</a></li> <li><a href="/wiki/Albert_R._Behnke" title="Albert R. Behnke">Albert R. Behnke</a></li> <li><a href="/wiki/Peter_B._Bennett" title="Peter B. Bennett">Peter B. Bennett</a></li> <li><a href="/wiki/Paul_Bert" title="Paul Bert">Paul Bert</a></li> <li><a href="/wiki/George_F._Bond" title="George F. Bond">George F. Bond</a></li> <li><a href="/wiki/Robert_Boyle" title="Robert Boyle">Robert Boyle</a></li> <li><a href="/wiki/Alf_O._Brubakk" title="Alf O. Brubakk">Alf O. Brubakk</a></li> <li><a href="/wiki/Albert_A._B%C3%BChlmann" title="Albert A. Bühlmann">Albert A. Bühlmann</a></li> <li><a href="/wiki/John_R._Clarke_(scientist)" title="John R. Clarke (scientist)">John R. Clarke</a></li> <li><a href="/wiki/Guybon_Chesney_Castell_Damant" title="Guybon Chesney Castell Damant">Guybon Chesney Castell Damant</a></li> <li><a href="/wiki/Kenneth_William_Donald" title="Kenneth William Donald">Kenneth William Donald</a></li> <li><a href="/wiki/William_Paul_Fife" title="William Paul Fife">William Paul Fife</a></li> <li><a href="/wiki/John_Scott_Haldane" title="John Scott Haldane">John Scott Haldane</a></li> <li><a href="/wiki/Robert_William_Hamilton_Jr." title="Robert William Hamilton Jr.">Robert William Hamilton Jr.</a></li> <li><a href="/wiki/Henry_Valence_Hempleman" title="Henry Valence Hempleman">Henry Valence Hempleman</a></li> <li><a href="/wiki/Leonard_Erskine_Hill" class="mw-redirect" title="Leonard Erskine Hill">Leonard Erskine Hill</a></li> <li><a href="/wiki/Brian_Andrew_Hills" title="Brian Andrew Hills">Brian Andrew Hills</a></li> <li><a href="/wiki/Felix_Hoppe-Seyler" title="Felix Hoppe-Seyler">Felix Hoppe-Seyler</a></li> <li><a href="/wiki/Christian_J._Lambertsen" title="Christian J. Lambertsen">Christian J. Lambertsen</a></li> <li><a href="/wiki/Simon_Mitchell" title="Simon Mitchell">Simon Mitchell</a></li> <li><a href="/wiki/Charles_Momsen" title="Charles Momsen">Charles Momsen</a></li> <li><a href="/wiki/Neal_W._Pollock" title="Neal W. Pollock">Neal W. Pollock</a></li> <li><a href="/wiki/John_Rawlins_(Royal_Navy_officer)" title="John Rawlins (Royal Navy officer)">John Rawlins</a></li> <li><a href="/wiki/Charles_Wesley_Shilling" title="Charles Wesley Shilling">Charles Wesley Shilling</a></li> <li><a href="/wiki/Edward_D._Thalmann" title="Edward D. Thalmann">Edward D. Thalmann</a></li> <li><a href="/wiki/Jacques_Triger" title="Jacques Triger">Jacques Triger</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Diving medical<br />research<br />organisations</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aerospace_Medical_Association" title="Aerospace Medical Association">Aerospace Medical Association</a></li> <li><a href="/wiki/Divers_Alert_Network" title="Divers Alert Network">Divers Alert Network</a> (DAN)</li> <li><a href="/wiki/Diving_Diseases_Research_Centre" class="mw-redirect" title="Diving Diseases Research Centre">Diving Diseases Research Centre</a> (DDRC)</li> <li><a href="/wiki/Diving_Medical_Advisory_Council" title="Diving Medical Advisory Council">Diving Medical Advisory Council</a> (DMAC)</li> <li><a href="/wiki/European_Diving_Technology_Committee" title="European Diving Technology Committee">European Diving Technology Committee</a> (EDTC)</li> <li><a href="/wiki/European_Underwater_and_Baromedical_Society" title="European Underwater and Baromedical Society">European Underwater and Baromedical Society</a> (EUBS)</li> <li><a href="/wiki/National_Board_of_Diving_and_Hyperbaric_Medical_Technology" title="National Board of Diving and Hyperbaric Medical Technology">National Board of Diving and Hyperbaric Medical Technology</a></li> <li><a href="/wiki/Naval_Submarine_Medical_Research_Laboratory" title="Naval Submarine Medical Research Laboratory">Naval Submarine Medical Research Laboratory</a></li> <li><a href="/wiki/Royal_Australian_Navy_School_of_Underwater_Medicine" title="Royal Australian Navy School of Underwater Medicine">Royal Australian Navy School of Underwater Medicine</a></li> <li><a href="/wiki/Rubicon_Foundation" title="Rubicon Foundation">Rubicon Foundation</a></li> <li><a href="/wiki/South_Pacific_Underwater_Medicine_Society" title="South Pacific Underwater Medicine Society">South Pacific Underwater Medicine Society</a> (SPUMS)</li> <li><a href="/wiki/Southern_African_Underwater_and_Hyperbaric_Medical_Association" title="Southern African Underwater and Hyperbaric Medical Association">Southern African Underwater and Hyperbaric Medical Association</a> (SAUHMA)</li> <li><a href="/wiki/Undersea_and_Hyperbaric_Medical_Society" title="Undersea and Hyperbaric Medical Society">Undersea and Hyperbaric Medical Society</a> (UHMS)</li> <li><a href="/wiki/United_States_Navy_Experimental_Diving_Unit" title="United States Navy Experimental Diving Unit">United States Navy Experimental Diving Unit</a> (NEDU)</li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Law" style="font-size:114%;margin:0 4em">Law</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Civil_liability_in_recreational_diving" title="Civil liability in recreational diving">Civil liability in recreational diving</a></li> <li><a href="/wiki/Diving_regulations" title="Diving regulations">Diving regulations</a></li> <li><a href="/wiki/Duty_of_care" title="Duty of care">Duty of care</a></li> <li><a href="/wiki/List_of_legislation_regulating_underwater_diving" title="List of legislation regulating underwater diving">List of legislation regulating underwater diving</a></li> <li><a href="/wiki/Investigation_of_diving_accidents" title="Investigation of diving accidents">Investigation of diving accidents</a></li> <li><a href="/wiki/Convention_on_the_Protection_of_the_Underwater_Cultural_Heritage" title="Convention on the Protection of the Underwater Cultural Heritage">Convention on the Protection of the Underwater Cultural Heritage</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="History_of_underwater_diving" style="font-size:114%;margin:0 4em"><a href="/wiki/History_of_underwater_diving" title="History of underwater diving">History of underwater diving</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/History_of_decompression_research_and_development" title="History of decompression research and development">History of decompression research and development</a></li> <li><a href="/wiki/History_of_Diving_Museum" title="History of Diving Museum">History of Diving Museum</a></li> <li><a href="/wiki/History_of_scuba_diving" title="History of scuba diving">History of scuba diving</a></li> <li><a href="/wiki/List_of_researchers_in_underwater_diving" title="List of researchers in underwater diving">List of researchers in underwater diving</a></li> <li><a href="/wiki/Lyons_Maritime_Museum" title="Lyons Maritime Museum">Lyons Maritime Museum</a></li> <li><a href="/wiki/Man_in_the_Sea_Museum" title="Man in the Sea Museum">Man in the Sea Museum</a></li> <li><a href="/wiki/Timeline_of_diving_technology" title="Timeline of diving technology">Timeline of diving technology</a></li> <li><a href="/wiki/Pearling_in_Western_Australia" title="Pearling in Western Australia">Pearling in Western Australia</a></li> <li><a href="/wiki/US_Navy_decompression_models_and_tables" title="US Navy decompression models and tables">US Navy decompression models and tables</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Archeological<br />sites</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/SS_Commodore" title="SS Commodore">SS <i>Commodore</i></a></li> <li><a href="/wiki/USS_Monitor" title="USS Monitor">USS <i>Monitor</i></a></li> <li><i><a href="/wiki/Queen_Anne%27s_Revenge" title="Queen Anne's Revenge">Queen Anne's Revenge</a></i></li> <li><i><a href="/wiki/Whydah_Gally" title="Whydah Gally">Whydah Gally</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater art<br />and artists</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/The_Diver" title="The Diver">The Diver</a></li> <li><a href="/wiki/Jason_deCaires_Taylor" title="Jason deCaires Taylor">Jason deCaires Taylor</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Engineers<br />and inventors</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Jer%C3%B3nimo_de_Ayanz_y_Beaumont" title="Jerónimo de Ayanz y Beaumont">Jerónimo de Ayanz y Beaumont</a></li> <li><a href="/wiki/William_Beebe" title="William Beebe">William Beebe</a></li> <li><a href="/wiki/Georges_Beuchat" title="Georges Beuchat">Georges Beuchat</a></li> <li><a href="/wiki/Giovanni_Alfonso_Borelli" title="Giovanni Alfonso Borelli">Giovanni Alfonso Borelli</a></li> <li><a href="/wiki/Joseph-Martin_Cabirol" title="Joseph-Martin Cabirol">Joseph-Martin Cabirol</a></li> <li><a href="/wiki/John_R._Clarke_(scientist)" title="John R. Clarke (scientist)">John R. Clarke</a></li> <li><a href="/wiki/Jacques_Cousteau" title="Jacques Cousteau">Jacques Cousteau</a></li> <li><a href="/wiki/Charles_Anthony_Deane" title="Charles Anthony Deane">Charles Anthony Deane</a></li> <li><a href="/wiki/John_Deane_(inventor)" title="John Deane (inventor)">John Deane</a></li> <li><a href="/wiki/Louis_de_Corlieu" title="Louis de Corlieu">Louis de Corlieu</a></li> <li><a href="/wiki/Auguste_Denayrouze" title="Auguste Denayrouze">Auguste Denayrouze</a></li> <li><a href="/wiki/Ted_Eldred" title="Ted Eldred">Ted Eldred</a></li> <li><a href="/wiki/Henry_Fleuss" title="Henry Fleuss">Henry Fleuss</a></li> <li><a href="/wiki/%C3%89mile_Gagnan" title="Émile Gagnan">Émile Gagnan</a></li> <li><a href="/wiki/Karl_Heinrich_Klingert" title="Karl Heinrich Klingert">Karl Heinrich Klingert</a></li> <li><a href="/wiki/Peter_Kreeft_(diver)" title="Peter Kreeft (diver)">Peter Kreeft</a></li> <li><a href="/wiki/Christian_J._Lambertsen" title="Christian J. Lambertsen">Christian J. Lambertsen</a></li> <li><a href="/wiki/Yves_Le_Prieur" title="Yves Le Prieur">Yves Le Prieur</a></li> <li><a href="/wiki/John_Lethbridge" title="John Lethbridge">John Lethbridge</a></li> <li><a href="/wiki/Ernest_William_Moir" title="Ernest William Moir">Ernest William Moir</a></li> <li><a href="/wiki/Joseph_Salim_Peress" title="Joseph Salim Peress">Joseph Salim Peress</a></li> <li><a href="/wiki/Auguste_Piccard" title="Auguste Piccard">Auguste Piccard</a></li> <li><a href="/wiki/Joe_Savoie" title="Joe Savoie">Joe Savoie</a></li> <li><a href="/wiki/Willard_Franklyn_Searle" title="Willard Franklyn Searle">Willard Franklyn Searle</a></li> <li><a href="/wiki/Gordon_Smith_(inventor)" title="Gordon Smith (inventor)">Gordon Smith</a></li> <li><a href="/wiki/Augustus_Siebe" title="Augustus Siebe">Augustus Siebe</a></li> <li><a href="/wiki/Pierre-Marie_Touboulic" title="Pierre-Marie Touboulic">Pierre-Marie Touboulic</a></li> <li><a href="/wiki/Jacques_Triger" title="Jacques Triger">Jacques Triger</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Historical<br />equipment</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aqua-Lung" title="Aqua-Lung">Aqua-Lung</a></li> <li><a href="/wiki/RV_Calypso" title="RV Calypso">RV <i>Calypso</i></a></li> <li><a href="/wiki/SP-350_Denise" title="SP-350 Denise">SP-350 <i>Denise</i></a></li> <li><a href="/wiki/Magnesium_torch" title="Magnesium torch">Magnesium torch</a></li> <li><a href="/wiki/Nikonos" title="Nikonos">Nikonos</a></li> <li><a href="/wiki/Porpoise_(scuba_gear)" title="Porpoise (scuba gear)">Porpoise regulator</a></li> <li><a href="/wiki/Standard_diving_dress" title="Standard diving dress">Standard diving dress</a></li> <li><a href="/wiki/Sub_Marine_Explorer" title="Sub Marine Explorer">Sub Marine Explorer</a></li> <li><a href="/wiki/Vintage_scuba" title="Vintage scuba">Vintage scuba</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Diverpropulsionvehicles" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diver_propulsion_vehicle" title="Diver propulsion vehicle">Diver<br />propulsion<br />vehicles</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Advanced_SEAL_Delivery_System" title="Advanced SEAL Delivery System">Advanced SEAL Delivery System</a></li> <li><a href="/wiki/Cosmos_CE2F_series" title="Cosmos CE2F series">Cosmos CE2F series</a></li> <li><a href="/wiki/Dry_Combat_Submersible" title="Dry Combat Submersible">Dry Combat Submersible</a></li> <li><a href="/wiki/Human_torpedo" title="Human torpedo">Human torpedo</a></li> <li><a href="/wiki/Motorised_Submersible_Canoe" title="Motorised Submersible Canoe">Motorised Submersible Canoe</a></li> <li><a href="/wiki/Necker_Nymph" title="Necker Nymph">Necker Nymph</a></li> <li><a href="/wiki/R-2_Mala-class_swimmer_delivery_vehicle" title="R-2 Mala-class swimmer delivery vehicle">R-2 Mala-class swimmer delivery vehicle</a></li> <li><a href="/wiki/SEAL_Delivery_Vehicle" title="SEAL Delivery Vehicle">SEAL Delivery Vehicle</a></li> <li><a href="/wiki/Shallow_Water_Combat_Submersible" title="Shallow Water Combat Submersible">Shallow Water Combat Submersible</a></li> <li><a href="/wiki/Siluro_San_Bartolomeo" title="Siluro San Bartolomeo">Siluro San Bartolomeo</a></li> <li><a href="/wiki/Welfreighter" title="Welfreighter">Welfreighter</a></li> <li><a href="/wiki/Wet_Nellie" title="Wet Nellie">Wet Nellie</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Military and<br />covert operations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Raid_on_Alexandria_(1941)" title="Raid on Alexandria (1941)">Raid on Alexandria (1941)</a></li> <li><a href="/wiki/Sinking_of_the_Rainbow_Warrior" title="Sinking of the Rainbow Warrior">Sinking of the <i>Rainbow Warrior</i></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Scientific projects</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1992_cageless_shark-diving_expedition" title="1992 cageless shark-diving expedition">1992 cageless shark-diving expedition</a></li> <li><a href="/wiki/Mission_31" title="Mission 31">Mission 31</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Awards and events</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hans_Hass_Award" title="Hans Hass Award">Hans Hass Award</a></li> <li><a href="/wiki/International_Scuba_Diving_Hall_of_Fame" title="International Scuba Diving Hall of Fame">International Scuba Diving Hall of Fame</a></li> <li><a href="/wiki/London_Diving_Chamber_Dive_Lectures" title="London Diving Chamber Dive Lectures">London Diving Chamber Dive Lectures</a></li> <li><a href="/wiki/NOGI_Awards" title="NOGI Awards">NOGI Awards</a></li> <li><a href="/wiki/Women_Divers_Hall_of_Fame" title="Women Divers Hall of Fame">Women Divers Hall of Fame</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Incidents</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dive_boat" title="Dive boat">Dive boat</a> incidents</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Sinking_of_MV_Conception" title="Sinking of MV Conception">Sinking of MV <i>Conception</i></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Diver rescues</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alpazat_cave_rescue" title="Alpazat cave rescue">Alpazat cave rescue</a></li> <li><a href="/wiki/Tham_Luang_cave_rescue" title="Tham Luang cave rescue">Tham Luang cave rescue</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Early diving</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/John_Day_(carpenter)" title="John Day (carpenter)">John Day (carpenter)</a></li> <li><a href="/wiki/Charles_Spalding" title="Charles Spalding">Charles Spalding</a></li> <li><a href="/wiki/Ebenezer_Watson" class="mw-redirect" title="Ebenezer Watson">Ebenezer Watson</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Freediving" title="Freediving">Freediving</a> fatalities</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Stephen_Keenan" title="Stephen Keenan">Stephen Keenan</a></li> <li><a href="/wiki/Lo%C3%AFc_Leferme" title="Loïc Leferme">Loïc Leferme</a></li> <li><a href="/wiki/Audrey_Mestre" title="Audrey Mestre">Audrey Mestre</a></li> <li><a href="/wiki/Nicholas_Mevoli" title="Nicholas Mevoli">Nicholas Mevoli</a></li> <li><a href="/wiki/Natalia_Molchanova" title="Natalia Molchanova">Natalia Molchanova</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Offshore_diving" class="mw-redirect" title="Offshore diving">Offshore<br />diving</a> incidents</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Byford_Dolphin#Diving_bell_accident" title="Byford Dolphin"><i>Byford Dolphin</i> diving bell accident</a></li> <li><a href="/wiki/Drill_Master_diving_accident" title="Drill Master diving accident"><i>Drill Master</i> diving accident</a></li> <li><a href="/wiki/Star_Canopus_diving_accident" title="Star Canopus diving accident"><i>Star Canopus</i> diving accident</a></li> <li><a href="/wiki/Stena_Seaspread_diving_accident" title="Stena Seaspread diving accident"><i>Stena Seaspread</i> diving accident</a></li> <li><a href="/wiki/Venture_One_diving_accident" class="mw-redirect" title="Venture One diving accident"><i>Venture One</i> diving accident</a></li> <li><a href="/wiki/Waage_Drill_II_diving_accident" title="Waage Drill II diving accident"><i>Waage Drill II</i> diving accident</a></li> <li><a href="/wiki/Wildrake_diving_accident" title="Wildrake diving accident"><i>Wildrake</i> diving accident</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Professional_diving" title="Professional diving">Professional<br />diving</a> fatalities</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Roger_Baldwin_(diver)" class="mw-redirect" title="Roger Baldwin (diver)">Roger Baldwin</a></li> <li><a href="/wiki/John_Bennett_(diver)" title="John Bennett (diver)">John Bennett</a></li> <li><a href="/wiki/Victor_F._Guiel_Jr." class="mw-redirect" title="Victor F. Guiel Jr.">Victor F. Guiel Jr.</a></li> <li><a href="/wiki/Francis_P._Hammerberg" title="Francis P. Hammerberg">Francis P. Hammerberg</a></li> <li><a href="/wiki/Craig_M._Hoffman" class="mw-redirect" title="Craig M. Hoffman">Craig M. Hoffman</a></li> <li><a href="/wiki/Peter_Henry_Michael_Holmes" class="mw-redirect" title="Peter Henry Michael Holmes">Peter Henry Michael Holmes</a></li> <li><a href="/wiki/Johnson_Sea_Link_accident" title="Johnson Sea Link accident">Johnson Sea Link accident</a> <ul><li><a href="/wiki/Edwin_Clayton_Link" class="mw-redirect" title="Edwin Clayton Link">Edwin Clayton Link</a></li></ul></li> <li><a href="/wiki/Gerard_Anthony_Prangley" class="mw-redirect" title="Gerard Anthony Prangley">Gerard Anthony Prangley</a></li> <li><a href="/wiki/Per_Skipnes" class="mw-redirect" title="Per Skipnes">Per Skipnes</a></li> <li><a href="/wiki/Robert_John_Smyth" class="mw-redirect" title="Robert John Smyth">Robert John Smyth</a></li> <li><a href="/wiki/Albert_D._Stover" class="mw-redirect" title="Albert D. Stover">Albert D. Stover</a></li> <li><a href="/wiki/Richard_A._Walker" class="mw-redirect" title="Richard A. Walker">Richard A. Walker</a></li> <li><a href="/wiki/Lothar_Michael_Ward" class="mw-redirect" title="Lothar Michael Ward">Lothar Michael Ward</a></li> <li><a href="/wiki/Joachim_Wendler" title="Joachim Wendler">Joachim Wendler</a></li> <li><a href="/wiki/Death_of_Bradley_Westell" title="Death of Bradley Westell">Bradley Westell</a></li> <li><a href="/wiki/Arne_Zetterstr%C3%B6m" title="Arne Zetterström">Arne Zetterström</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Scuba_diving_fatalities" title="Scuba diving fatalities">Scuba diving<br />fatalities</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1973_Mount_Gambier_cave_diving_accident" title="1973 Mount Gambier cave diving accident">1973 Mount Gambier cave diving accident</a></li> <li><a href="/wiki/Ricardo_Armbruster" title="Ricardo Armbruster">Ricardo Armbruster</a></li> <li><a href="/wiki/Allan_Bridge" title="Allan Bridge">Allan Bridge</a></li> <li><a href="/wiki/David_Bright_(diver)" title="David Bright (diver)">David Bright</a></li> <li><a href="/wiki/Berry_L._Cannon" title="Berry L. Cannon">Berry L. Cannon</a></li> <li><a href="/wiki/Cotton_Coulson" title="Cotton Coulson">Cotton Coulson</a></li> <li><a href="/wiki/Cl%C3%A1udio_Coutinho" title="Cláudio Coutinho">Cláudio Coutinho</a></li> <li><a href="/wiki/E._Yale_Dawson" title="E. Yale Dawson">E. Yale Dawson</a></li> <li><a href="/wiki/Deon_Dreyer" title="Deon Dreyer">Deon Dreyer</a></li> <li><a href="/wiki/Milan_Dufek" title="Milan Dufek">Milan Dufek</a></li> <li><a href="/wiki/Sheck_Exley" title="Sheck Exley">Sheck Exley</a></li> <li><a href="/wiki/Maurice_Fargues" title="Maurice Fargues">Maurice Fargues</a></li> <li><a href="/wiki/Fernando_Garfella_Palmer" title="Fernando Garfella Palmer">Fernando Garfella Palmer</a></li> <li><a href="/wiki/Guy_Garman" title="Guy Garman">Guy Garman</a></li> <li><a href="/wiki/Steve_Irwin" title="Steve Irwin">Steve Irwin</a> <ul><li><a href="/wiki/Death_of_Steve_Irwin" title="Death of Steve Irwin">death</a></li></ul></li> <li><a href="/wiki/Jim_Jones_(American_football,_born_1935)" title="Jim Jones (American football, born 1935)">Jim Jones</a></li> <li><a href="/wiki/Henry_Way_Kendall" title="Henry Way Kendall">Henry Way Kendall</a></li> <li><a href="/wiki/Artur_Koz%C5%82owski_(speleologist)" title="Artur Kozłowski (speleologist)">Artur Kozłowski</a></li> <li><a href="/wiki/Yuri_Lipski" class="mw-redirect" title="Yuri Lipski">Yuri Lipski</a></li> <li><a href="/wiki/Kirsty_MacColl" title="Kirsty MacColl">Kirsty MacColl</a></li> <li><a href="/wiki/Death_of_Linnea_Mills" title="Death of Linnea Mills">Linnea Mills</a></li> <li><a href="/wiki/Agnes_Milowka" title="Agnes Milowka">Agnes Milowka</a></li> <li><a href="/wiki/Fran%C3%A7ois_de_Roubaix" title="François de Roubaix">François de Roubaix</a></li> <li><a href="/wiki/The_Last_Dive" title="The Last Dive">Chris and Chrissy Rouse</a></li> <li><a href="/wiki/Dave_Shaw" title="Dave Shaw">Dave Shaw</a></li> <li><a href="/wiki/Wesley_C._Skiles" title="Wesley C. Skiles">Wesley C. Skiles</a></li> <li><a href="/wiki/Dewey_Smith" title="Dewey Smith">Dewey Smith</a></li> <li><a href="/wiki/Rob_Stewart_(filmmaker)" title="Rob Stewart (filmmaker)">Rob Stewart</a></li> <li><a href="/wiki/Esbj%C3%B6rn_Svensson" title="Esbjörn Svensson">Esbjörn Svensson</a></li> <li><a href="/wiki/Josef_Velek" title="Josef Velek">Josef Velek</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Publications" style="font-size:114%;margin:0 4em">Publications</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Manuals</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/NOAA_Diving_Manual" title="NOAA Diving Manual">NOAA Diving Manual</a></i></li> <li><i><a href="/wiki/U.S._Navy_Diving_Manual" title="U.S. Navy Diving Manual">U.S. Navy Diving Manual</a></i></li> <li><i><a href="/wiki/Basic_Cave_Diving:_A_Blueprint_for_Survival" title="Basic Cave Diving: A Blueprint for Survival">Basic Cave Diving: A Blueprint for Survival</a></i></li> <li><i><a href="/w/index.php?title=Underwater_Handbook&action=edit&redlink=1" class="new" title="Underwater Handbook (page does not exist)">Underwater Handbook</a></i></li> <li><i><a href="/w/index.php?title=Bennett_and_Elliott%27s_physiology_and_medicine_of_diving&action=edit&redlink=1" class="new" title="Bennett and Elliott's physiology and medicine of diving (page does not exist)">Bennett and Elliott's physiology and medicine of diving</a></i></li> <li><i><a href="/w/index.php?title=Encyclopedia_of_Recreational_Diving&action=edit&redlink=1" class="new" title="Encyclopedia of Recreational Diving (page does not exist)">Encyclopedia of Recreational Diving</a></i></li> <li><i><a href="/w/index.php?title=The_new_science_of_skin_and_scuba_diving&action=edit&redlink=1" class="new" title="The new science of skin and scuba diving (page does not exist)">The new science of skin and scuba diving</a></i></li> <li><i><a href="/w/index.php?title=Professional_Diver%27s_Handbook&action=edit&redlink=1" class="new" title="Professional Diver's Handbook (page does not exist)">Professional Diver's Handbook</a></i></li> <li><i><a href="/w/index.php?title=Basic_Scuba&action=edit&redlink=1" class="new" title="Basic Scuba (page does not exist)">Basic Scuba</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Standards and<br />Codes of Practice</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Code_of_Practice_for_Scientific_Diving_(UNESCO)" class="mw-redirect" title="Code of Practice for Scientific Diving (UNESCO)">Code of Practice for Scientific Diving (UNESCO)</a></li> <li><a href="/wiki/DIN_7876" title="DIN 7876">DIN 7876</a></li> <li><a href="/wiki/IMCA_Code_of_Practice_for_Offshore_Diving" class="mw-redirect" title="IMCA Code of Practice for Offshore Diving">IMCA Code of Practice for Offshore Diving</a></li> <li><a href="/wiki/ISO_24801_Recreational_diving_services_%E2%80%94_Requirements_for_the_training_of_recreational_scuba_divers" class="mw-redirect" title="ISO 24801 Recreational diving services — Requirements for the training of recreational scuba divers">ISO 24801 Recreational diving services — Requirements for the training of recreational scuba divers</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">General non-fiction</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/The_Darkness_Beckons" title="The Darkness Beckons">The Darkness Beckons</a></i></li> <li><i><a href="/wiki/Goldfinder" title="Goldfinder">Goldfinder</a></i></li> <li><i><a href="/wiki/The_Last_Dive" title="The Last Dive">The Last Dive</a></i></li> <li><i><a href="/wiki/Shadow_Divers" title="Shadow Divers">Shadow Divers</a></i></li> <li><i><a href="/wiki/The_Silent_World:_A_Story_of_Undersea_Discovery_and_Adventure" title="The Silent World: A Story of Undersea Discovery and Adventure">The Silent World: A Story of Undersea Discovery and Adventure</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Research</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_Divers_Alert_Network_publications" title="List of Divers Alert Network publications">List of Divers Alert Network publications</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dive_guide_(publication)" class="mw-redirect" title="Dive guide (publication)">Dive guides</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li class="mw-empty-elt"></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Training_and_registration" style="font-size:114%;margin:0 4em">Training and registration</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diver_training" title="Diver training">Diver<br />training</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Competence and assessment <ul><li><a href="/wiki/Competency-based_learning" title="Competency-based learning">Competency-based learning</a></li> <li><a href="/wiki/Refresher_training_(diving)" class="mw-redirect" title="Refresher training (diving)">Refresher training</a></li> <li><a href="/wiki/Skill_assessment" title="Skill assessment">Skill assessment</a></li></ul></li> <li><a href="/wiki/Diver_training_standard" title="Diver training standard">Diver training standard</a></li> <li><a href="/wiki/Diving_instructor" title="Diving instructor">Diving instructor</a></li> <li><a href="/wiki/Diving_school" class="mw-redirect" title="Diving school">Diving school</a></li> <li>Occupational diver training <ul><li><a href="/wiki/Commercial_diver_training" class="mw-redirect" title="Commercial diver training">Commercial diver training</a></li> <li><a href="/wiki/Military_diver_training" class="mw-redirect" title="Military diver training">Military diver training</a></li> <li><a href="/wiki/Public_safety_diver_training" class="mw-redirect" title="Public safety diver training">Public safety diver training</a></li> <li><a href="/wiki/Scientific_diver_training" class="mw-redirect" title="Scientific diver training">Scientific diver training</a></li></ul></li> <li><a href="/wiki/Recreational_diver_training" title="Recreational diver training">Recreational diver training</a> <ul><li><a href="/wiki/Introductory_diving" title="Introductory diving">Introductory diving</a></li> <li><a href="/wiki/ISO_recreational_diving_training_standards" class="mw-redirect" title="ISO recreational diving training standards">ISO training standards</a></li></ul></li> <li><a href="/wiki/Teaching_method" title="Teaching method">Teaching method</a> <ul><li><a href="/wiki/Muscle_memory" title="Muscle memory">Muscle memory</a></li> <li><a href="/wiki/Overlearning" title="Overlearning">Overlearning</a></li> <li><a href="/wiki/Stress_exposure_training" title="Stress exposure training">Stress exposure training</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Skills" scope="row" class="navbox-group" style="width:1%">Skills</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Combat_sidestroke" title="Combat sidestroke">Combat sidestroke</a></li> <li><a href="/wiki/Diver_navigation" title="Diver navigation">Diver navigation</a></li> <li><a href="/wiki/Diver_trim" title="Diver trim">Diver trim</a></li> <li><a href="/wiki/Ear_clearing" title="Ear clearing">Ear clearing</a> <ul><li><a href="/wiki/Frenzel_maneuver" title="Frenzel maneuver">Frenzel maneuver</a></li> <li><a href="/wiki/Valsalva_maneuver" title="Valsalva maneuver">Valsalva maneuver</a></li></ul></li> <li><a href="/wiki/Finning_techniques" title="Finning techniques">Finning techniques</a></li> <li><a href="/wiki/Scuba_skills" title="Scuba skills">Scuba skills</a> <ul><li><a href="/wiki/Buddy_breathing" title="Buddy breathing">Buddy breathing</a></li> <li><a href="/wiki/Low_impact_diving" title="Low impact diving">Low impact diving</a> <ul><li><a href="/wiki/Diamond_Reef_System" title="Diamond Reef System">Diamond Reef System</a></li></ul></li></ul></li> <li><a href="/wiki/Surface-supplied_diving_skills" title="Surface-supplied diving skills">Surface-supplied diving skills</a></li> <li><a href="/wiki/Underwater_searches" title="Underwater searches">Underwater searches</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Recreational_scuba_certification_levels" title="Recreational scuba certification levels">Recreational<br />scuba<br />certification<br />levels</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Core diving skills</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Advanced_Open_Water_Diver" title="Advanced Open Water Diver">Advanced Open Water Diver</a></li> <li><a href="/wiki/Autonomous_diver" title="Autonomous diver">Autonomous diver</a></li> <li><a href="/wiki/CMAS*_scuba_diver" title="CMAS* scuba diver">CMAS* scuba diver</a></li> <li><a href="/wiki/CMAS**_scuba_diver" title="CMAS** scuba diver">CMAS** scuba diver</a></li> <li><a href="/wiki/Introductory_diving" title="Introductory diving">Introductory diving</a></li> <li><a href="/wiki/Low_Impact_Diver" class="mw-redirect" title="Low Impact Diver">Low Impact Diver</a></li> <li><a href="/wiki/Master_Scuba_Diver" title="Master Scuba Diver">Master Scuba Diver</a></li> <li><a href="/wiki/Open_Water_Diver" title="Open Water Diver">Open Water Diver</a></li> <li><a href="/wiki/Supervised_diver" title="Supervised diver">Supervised diver</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Leadership skills</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dive_leader" title="Dive leader">Dive leader</a> <ul><li><a href="/wiki/Divemaster" title="Divemaster">Divemaster</a></li></ul></li> <li><a href="/wiki/Diving_instructor" title="Diving instructor">Diving instructor</a> <ul><li><a href="/wiki/Master_Instructor" class="mw-redirect" title="Master Instructor">Master Instructor</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Specialist skills</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Rescue_Diver" title="Rescue Diver">Rescue Diver</a></li> <li><a href="/wiki/Solo_diver" class="mw-redirect" title="Solo diver">Solo diver</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diver_training_organization" title="Diver training organization">Diver training<br />certification<br />and registration<br />organisations</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/European_Underwater_Federation" title="European Underwater Federation">European Underwater Federation</a> (EUF)</li> <li><a href="/wiki/International_Diving_Regulators_and_Certifiers_Forum" title="International Diving Regulators and Certifiers Forum">International Diving Regulators and Certifiers Forum</a> (IDRCF)</li> <li><a href="/wiki/International_Diving_Schools_Association" title="International Diving Schools Association">International Diving Schools Association</a> (IDSA)</li> <li><a href="/wiki/International_Marine_Contractors_Association" title="International Marine Contractors Association">International Marine Contractors Association</a> (IMCA)</li> <li><a href="/wiki/List_of_diver_certification_organizations" title="List of diver certification organizations">List of diver certification organizations</a></li> <li><a href="/wiki/National_Oceanic_and_Atmospheric_Administration" title="National Oceanic and Atmospheric Administration">National Oceanic and Atmospheric Administration</a> (NOAA)</li> <li><a href="/wiki/Nautical_Archaeology_Society" title="Nautical Archaeology Society">Nautical Archaeology Society</a></li> <li><a href="/wiki/Recreational_diver_course_referral" title="Recreational diver course referral">Recreational diver course referral</a></li> <li><a href="/wiki/World_Recreational_Scuba_Training_Council" title="World Recreational Scuba Training Council">World Recreational Scuba Training Council</a> (WRSTC)</li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Commercial diver<br />certification<br />authorities</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Australian_Diver_Accreditation_Scheme" title="Australian Diver Accreditation Scheme">Australian Diver Accreditation Scheme</a> (ADAS)</li> <li><a href="/wiki/Commercial_diver_registration_in_South_Africa" title="Commercial diver registration in South Africa">Commercial diver registration in South Africa</a></li> <li><a href="/wiki/Divers_Institute_of_Technology" title="Divers Institute of Technology">Divers Institute of Technology</a></li> <li><a href="/wiki/Health_and_Safety_Executive" title="Health and Safety Executive">Health and Safety Executive</a> (HSE)</li> <li><a href="/wiki/Department_of_Employment_and_Labour" title="Department of Employment and Labour">Department of Employment and Labour</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Commercial diving<br />schools</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Divers_Academy_International" title="Divers Academy International">Divers Academy International</a></li> <li><a href="/wiki/Western_Norway_University_of_Applied_Sciences#Norwegian_diver_school" title="Western Norway University of Applied Sciences">Norwegian diver school</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Free-diving<br />certification<br />agencies</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/AIDA_International" title="AIDA International">AIDA International</a> (AIDA)</li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a> (CMAS)</li> <li><a href="/wiki/Performance_Freediving_International" title="Performance Freediving International">Performance Freediving International</a> (PI)</li> <li><a href="/wiki/Scuba_Schools_International" title="Scuba Schools International">Scuba Schools International</a> (SSI)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Recreational<br />scuba<br />certification<br />agencies</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/American_Canadian_Underwater_Certifications" title="American Canadian Underwater Certifications">American Canadian Underwater Certifications</a> (ACUC)</li> <li><a href="/wiki/American_Nitrox_Divers_International" title="American Nitrox Divers International">American Nitrox Divers International</a> (ANDI)</li> <li><a href="/wiki/Association_nationale_des_moniteurs_de_plong%C3%A9e" title="Association nationale des moniteurs de plongée">Association nationale des moniteurs de plongée</a> (ANMP)</li> <li><a href="/wiki/British_Sub-Aqua_Club" title="British Sub-Aqua Club">British Sub-Aqua Club</a> (BSAC)</li> <li><a href="/wiki/Comhairle_Fo-Thuinn" title="Comhairle Fo-Thuinn">Comhairle Fo-Thuinn</a> (CFT)</li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a> (CMAS)</li> <li><a href="/wiki/Federaci%C3%B3n_Espa%C3%B1ola_de_Actividades_Subacu%C3%A1ticas" title="Federación Española de Actividades Subacuáticas">Federación Española de Actividades Subacuáticas</a> (FEDAS)</li> <li><a href="/wiki/F%C3%A9d%C3%A9ration_Fran%C3%A7aise_d%27%C3%89tudes_et_de_Sports_Sous-Marins" title="Fédération Française d'Études et de Sports Sous-Marins">Fédération Française d'Études et de Sports Sous-Marins</a> (FFESSM)</li> <li><a href="/wiki/Federazione_Italiana_Attivit%C3%A0_Subacquee" title="Federazione Italiana Attività Subacquee">Federazione Italiana Attività Subacquee</a> (FIAS)</li> <li><a href="/wiki/Global_Underwater_Explorers" title="Global Underwater Explorers">Global Underwater Explorers</a> (GUE)</li> <li><a href="/wiki/International_Association_for_Handicapped_Divers" title="International Association for Handicapped Divers">International Association for Handicapped Divers</a> (IAHD)</li> <li><a href="/wiki/International_Association_of_Nitrox_and_Technical_Divers" title="International Association of Nitrox and Technical Divers">International Association of Nitrox and Technical Divers</a> (IANTD)</li> <li><a href="/wiki/International_Life_Saving_Federation" title="International Life Saving Federation">International Life Saving Federation</a> (ILS)</li> <li><a href="/wiki/Israeli_Diving_Federation" title="Israeli Diving Federation">Israeli Diving Federation</a> (TIDF)</li> <li><a href="/wiki/National_Academy_of_Scuba_Educators" title="National Academy of Scuba Educators">National Academy of Scuba Educators</a> (NASE)</li> <li><a href="/wiki/National_Association_of_Underwater_Instructors" title="National Association of Underwater Instructors">National Association of Underwater Instructors</a> (NAUI)</li> <li><a href="/wiki/Nederlandse_Onderwatersport_Bond" title="Nederlandse Onderwatersport Bond">Nederlandse Onderwatersport Bond</a> (NOB)</li> <li><a href="/wiki/Professional_Association_of_Diving_Instructors" title="Professional Association of Diving Instructors">Professional Association of Diving Instructors</a> (PADI)</li> <li><a href="/wiki/Professional_Diving_Instructors_Corporation" title="Professional Diving Instructors Corporation">Professional Diving Instructors Corporation</a> (PDIC)</li> <li><a href="/wiki/Professional_Technical_and_Recreational_Diving" title="Professional Technical and Recreational Diving">Professional Technical and Recreational Diving</a> (ProTec)</li> <li><a href="/wiki/Rebreather_Association_of_International_Divers" title="Rebreather Association of International Divers">Rebreather Association of International Divers</a> (RAID)</li> <li><a href="/wiki/Sub-Aqua_Association" title="Sub-Aqua Association">Sub-Aqua Association</a> (SAA)</li> <li><a href="/wiki/Scuba_Diving_International" title="Scuba Diving International">Scuba Diving International</a> (SDI)</li> <li><a href="/wiki/Scuba_Educators_International" title="Scuba Educators International">Scuba Educators International</a> (SEI)</li> <li><a href="/wiki/Scottish_Sub_Aqua_Club" title="Scottish Sub Aqua Club">Scottish Sub Aqua Club</a> (ScotSAC)</li> <li><a href="/wiki/Scuba_Schools_International" title="Scuba Schools International">Scuba Schools International</a> (SSI)</li> <li><a href="/wiki/Turkish_Underwater_Sports_Federation" title="Turkish Underwater Sports Federation">Türkiye Sualtı Sporları Federasyonu</a> (TSSF)</li> <li><a href="/wiki/United_Diving_Instructors" title="United Diving Instructors">United Diving Instructors</a> (UDI)</li> <li><a href="/wiki/YMCA_SCUBA_Program" title="YMCA SCUBA Program">YMCA SCUBA Program</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Scientific diver<br />certification<br />authorities</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/American_Academy_of_Underwater_Sciences" title="American Academy of Underwater Sciences">American Academy of Underwater Sciences</a> (AAUS)</li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques#Scientific_committee" title="Confédération Mondiale des Activités Subaquatiques">CMAS Scientific Committee</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Technical diver<br />certification<br />agencies</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/American_Nitrox_Divers_International" title="American Nitrox Divers International">American Nitrox Divers International</a> (ANDI)</li> <li><a href="/wiki/British_Sub-Aqua_Club" title="British Sub-Aqua Club">British Sub-Aqua Club</a> (BSAC)</li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a> (CMAS)</li> <li><a href="/wiki/Diving_Science_and_Technology" title="Diving Science and Technology">Diving Science and Technology</a> (DSAT)</li> <li><a href="/wiki/Federazione_Italiana_Attivit%C3%A0_Subacquee" title="Federazione Italiana Attività Subacquee">Federazione Italiana Attività Subacquee</a> (FIAS)</li> <li><a href="/wiki/International_Association_of_Nitrox_and_Technical_Divers" title="International Association of Nitrox and Technical Divers">International Association of Nitrox and Technical Divers</a> (IANTD)</li> <li><a href="/wiki/Professional_Association_of_Diving_Instructors" title="Professional Association of Diving Instructors">Professional Association of Diving Instructors</a> (PADI)</li> <li><a href="/wiki/Professional_Diving_Instructors_Corporation" title="Professional Diving Instructors Corporation">Professional Diving Instructors Corporation</a> (PDIC)</li> <li><a href="/wiki/Professional_Technical_and_Recreational_Diving" title="Professional Technical and Recreational Diving">Professional Technical and Recreational Diving</a> (ProTec)</li> <li><a href="/wiki/Rebreather_Association_of_International_Divers" title="Rebreather Association of International Divers">Rebreather Association of International Divers</a> (RAID)</li> <li><a href="/wiki/Trimix_Scuba_Association" title="Trimix Scuba Association">Trimix Scuba Association</a> (TSA)</li> <li><a href="/wiki/Scuba_Schools_International" title="Scuba Schools International">Technical Extended Range</a> (TXR)</li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Cavediving" scope="row" class="navbox-group" style="width:1%">Cave<br />diving</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cave_Divers_Association_of_Australia" title="Cave Divers Association of Australia">Cave Divers Association of Australia</a> (CDAA)</li> <li><a href="/wiki/Cave_Diving_Group" title="Cave Diving Group">Cave Diving Group</a> (CDG)</li> <li><a href="/wiki/Global_Underwater_Explorers" title="Global Underwater Explorers">Global Underwater Explorers</a> (GUE)</li> <li><a href="/wiki/National_Speleological_Society#Cave_Diving_Group" title="National Speleological Society">National Speleological Society#Cave Diving Group</a> (CDG)</li> <li><a href="/wiki/National_Association_of_Underwater_Instructors" title="National Association of Underwater Instructors">National Association of Underwater Instructors</a> (NAUI)</li> <li><a href="/wiki/Technical_Diving_International" title="Technical Diving International">Technical Diving International</a> (TDI)</li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Military diver<br />training centres</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Defence_Diving_School" title="Defence Diving School">Defence Diving School</a></li> <li><a href="/wiki/Naval_Support_Activity_Panama_City#Tenant_commands" title="Naval Support Activity Panama City">Navy Diving Salvage and Training Center</a></li> <li><a href="/wiki/Underwater_Escape_Training_Unit" title="Underwater Escape Training Unit">Underwater Escape Training Unit</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Military diver<br />training courses</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/United_States_Marine_Corps_Combatant_Diver_Course" title="United States Marine Corps Combatant Diver Course">United States Marine Corps Combatant Diver Course</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Underwater_sports" style="font-size:114%;margin:0 4em"><a href="/wiki/Underwater_sports" title="Underwater sports">Underwater sports</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Surface snorkeling</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Finswimming" title="Finswimming">Finswimming</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Snorkeling/breath-hold</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Spearfishing" title="Spearfishing">Spearfishing</a></li> <li><a href="/wiki/Underwater_football" title="Underwater football">Underwater football</a></li> <li><a href="/wiki/Underwater_hockey" title="Underwater hockey">Underwater hockey</a> <ul><li><a href="/wiki/Underwater_hockey_in_Australia" title="Underwater hockey in Australia">Australia</a></li> <li><a href="/wiki/Underwater_hockey_in_Turkey" title="Underwater hockey in Turkey">Turkey</a></li></ul></li> <li><a href="/wiki/Underwater_rugby" title="Underwater rugby">Underwater rugby</a> <ul><li><a href="/wiki/Underwater_rugby_in_Colombia" class="mw-redirect" title="Underwater rugby in Colombia">Colombia</a></li> <li><a href="/wiki/Underwater_rugby_in_the_United_States" title="Underwater rugby in the United States">United States</a></li></ul></li> <li><a href="/wiki/Underwater_target_shooting" title="Underwater target shooting">Underwater target shooting</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Breath-hold</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aquathlon_(underwater_wrestling)" title="Aquathlon (underwater wrestling)">Aquathlon</a></li> <li><a href="/wiki/Apnoea_finswimming" class="mw-redirect" title="Apnoea finswimming">Apnoea finswimming</a></li> <li><a href="/wiki/Freediving" title="Freediving">Freediving</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Open Circuit Scuba</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Immersion_finswimming" class="mw-redirect" title="Immersion finswimming">Immersion finswimming</a></li> <li><a href="/wiki/Sport_diving_(sport)" title="Sport diving (sport)">Sport diving</a></li> <li><a href="/wiki/Underwater_cycling" title="Underwater cycling">Underwater cycling</a></li> <li><a href="/wiki/Underwater_orienteering" title="Underwater orienteering">Underwater orienteering</a></li> <li><a href="/wiki/Underwater_photography_(sport)" title="Underwater photography (sport)">Underwater photography</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Rebreather</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Underwater_photography_(sport)" title="Underwater photography (sport)">Underwater photography</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sports governing<br />organisations<br /> and federations</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>International <ul><li><a href="/wiki/AIDA_International" title="AIDA International">AIDA International</a></li> <li><a href="/wiki/Conf%C3%A9d%C3%A9ration_Mondiale_des_Activit%C3%A9s_Subaquatiques" title="Confédération Mondiale des Activités Subaquatiques">Confédération Mondiale des Activités Subaquatiques</a>)</li></ul></li> <li>National <ul><li><a href="/wiki/AIDA_Hellas" title="AIDA Hellas">AIDA Hellas</a></li> <li><a href="/wiki/Australian_Underwater_Federation" title="Australian Underwater Federation">Australian Underwater Federation</a></li> <li><a href="/wiki/British_Freediving_Association" title="British Freediving Association">British Freediving Association</a></li> <li><a href="/wiki/British_Octopush_Association" title="British Octopush Association">British Octopush Association</a></li> <li><a href="/wiki/British_Underwater_Sports_Association" title="British Underwater Sports Association">British Underwater Sports Association</a></li> <li><a href="/wiki/Comhairle_Fo-Thuinn" title="Comhairle Fo-Thuinn">Comhairle Fo-Thuinn</a></li> <li><a href="/wiki/Federaci%C3%B3n_Espa%C3%B1ola_de_Actividades_Subacu%C3%A1ticas" title="Federación Española de Actividades Subacuáticas">Federación Española de Actividades Subacuáticas</a></li> <li><a href="/wiki/French_federation_of_underwater_studies_and_sports" class="mw-redirect" title="French federation of underwater studies and sports">Fédération Française d'Études et de Sports Sous-Marins</a></li> <li><a href="/wiki/South_African_Underwater_Sports_Federation" title="South African Underwater Sports Federation">South African Underwater Sports Federation</a></li> <li><a href="/wiki/Turkish_Underwater_Sports_Federation" title="Turkish Underwater Sports Federation">Türkiye Sualtı Sporları Federasyonu</a></li> <li><a href="/wiki/Underwater_Society_of_America" title="Underwater Society of America">Underwater Society of America</a>)</li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Competitions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/14th_CMAS_Underwater_Photography_World_Championship" title="14th CMAS Underwater Photography World Championship">14th CMAS Underwater Photography World Championship</a></li> <li><a href="/wiki/Underwater_Hockey_World_Championships" title="Underwater Hockey World Championships">Underwater Hockey World Championships</a></li> <li><a href="/wiki/Underwater_Orienteering_World_Championships" title="Underwater Orienteering World Championships">Underwater Orienteering World Championships</a></li> <li><a href="/wiki/Underwater_Rugby_World_Championships" title="Underwater Rugby World Championships">Underwater Rugby World Championships</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Underwater_divers" style="font-size:114%;margin:0 4em"><a href="/wiki/Outline_of_underwater_divers" title="Outline of underwater divers">Underwater divers</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Pioneers<br />of diving</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Eduard_Admetlla_i_L%C3%A1zaro" title="Eduard Admetlla i Lázaro">Eduard Admetlla i Lázaro</a></li> <li><a href="/wiki/Aquanaut" title="Aquanaut">Aquanaut</a></li> <li><a href="/wiki/Mary_Bonnin" title="Mary Bonnin">Mary Bonnin</a></li> <li><a href="/wiki/Amelia_Behrens-Furniss" title="Amelia Behrens-Furniss">Amelia Behrens-Furniss</a></li> <li><a href="/wiki/James_F._Cahill" title="James F. Cahill">James F. Cahill</a></li> <li><a href="/wiki/Jacques_Cousteau" title="Jacques Cousteau">Jacques Cousteau</a></li> <li><a href="/wiki/Billy_Deans_(diver)" title="Billy Deans (diver)">Billy Deans</a></li> <li><a href="/wiki/Dottie_Frazier" title="Dottie Frazier">Dottie Frazier</a></li> <li><a href="/wiki/Trevor_Hampton" title="Trevor Hampton">Trevor Hampton</a></li> <li><a href="/wiki/Hans_Hass" title="Hans Hass">Hans Hass</a></li> <li><a href="/wiki/Dick_Rutkowski" title="Dick Rutkowski">Dick Rutkowski</a></li> <li><a href="/wiki/Teseo_Tesei" title="Teseo Tesei">Teseo Tesei</a></li> <li><a href="/wiki/Arne_Zetterstr%C3%B6m" title="Arne Zetterström">Arne Zetterström</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater<br />scientists<br />archaeologists and<br />environmentalists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Michael_Arbuthnot" title="Michael Arbuthnot">Michael Arbuthnot</a></li> <li><a href="/wiki/Robert_Ballard" title="Robert Ballard">Robert Ballard</a></li> <li><a href="/wiki/George_Bass_(archaeologist)" title="George Bass (archaeologist)">George Bass</a></li> <li><a href="/wiki/Mensun_Bound" title="Mensun Bound">Mensun Bound</a></li> <li><a href="/wiki/Louis_Boutan" title="Louis Boutan">Louis Boutan</a></li> <li><a href="/wiki/Jeffrey_Bozanic" title="Jeffrey Bozanic">Jeffrey Bozanic</a></li> <li><a href="/wiki/Hugh_Bradner" title="Hugh Bradner">Hugh Bradner</a></li> <li><a href="/wiki/Cathy_Church" title="Cathy Church">Cathy Church</a></li> <li><a href="/wiki/Eugenie_Clark" title="Eugenie Clark">Eugenie Clark</a></li> <li><a href="/wiki/James_P._Delgado" title="James P. Delgado">James P. Delgado</a></li> <li><a href="/wiki/Sylvia_Earle" title="Sylvia Earle">Sylvia Earle</a></li> <li><a href="/wiki/John_Christopher_Fine" title="John Christopher Fine">John Christopher Fine</a></li> <li><a href="/wiki/George_R._Fischer" title="George R. Fischer">George R. Fischer</a></li> <li><a href="/wiki/Anders_Franz%C3%A9n" title="Anders Franzén">Anders Franzén</a></li> <li><a href="/wiki/Honor_Frost" title="Honor Frost">Honor Frost</a></li> <li><a href="/wiki/Fernando_Garfella_Palmer" title="Fernando Garfella Palmer">Fernando Garfella Palmer</a></li> <li><a href="/wiki/David_Gibbins" title="David Gibbins">David Gibbins</a></li> <li><a href="/wiki/Graham_Jessop" title="Graham Jessop">Graham Jessop</a></li> <li><a href="/wiki/Swietenia_Puspa_Lestari" title="Swietenia Puspa Lestari">Swietenia Puspa Lestari</a></li> <li><a href="/wiki/Pilar_Luna" title="Pilar Luna">Pilar Luna</a></li> <li><a href="/wiki/Robert_F._Marx" title="Robert F. Marx">Robert F. Marx</a></li> <li><a href="/wiki/Anna_Marguerite_McCann" title="Anna Marguerite McCann">Anna Marguerite McCann</a></li> <li><a href="/wiki/Innes_McCartney" title="Innes McCartney">Innes McCartney</a></li> <li><a href="/wiki/Charles_T._Meide" title="Charles T. Meide">Charles T. Meide</a></li> <li><a href="/wiki/Mark_M._Newell" title="Mark M. Newell">Mark M. Newell</a></li> <li><a href="/wiki/Lyuba_Ognenova-Marinova" title="Lyuba Ognenova-Marinova">Lyuba Ognenova-Marinova</a></li> <li><a href="/wiki/John_Peter_Oleson" title="John Peter Oleson">John Peter Oleson</a></li> <li><a href="/wiki/Mendel_L._Peterson" title="Mendel L. Peterson">Mendel L. Peterson</a></li> <li><a href="/wiki/Richard_Pyle" title="Richard Pyle">Richard Pyle</a></li> <li><a href="/wiki/Andreas_Rechnitzer" title="Andreas Rechnitzer">Andreas Rechnitzer</a></li> <li><a href="/wiki/William_R._Royal" title="William R. Royal">William R. Royal</a></li> <li><a href="/wiki/Margaret_Rule" title="Margaret Rule">Margaret Rule</a></li> <li><a href="/wiki/Gunter_Sch%C3%B6bel" title="Gunter Schöbel">Gunter Schöbel</a></li> <li><a href="/wiki/Stephanie_Schwabe" title="Stephanie Schwabe">Stephanie Schwabe</a></li> <li><a href="/wiki/Myriam_Seco" title="Myriam Seco">Myriam Seco</a></li> <li><a href="/wiki/E._Lee_Spence" title="E. Lee Spence">E. Lee Spence</a></li> <li><a href="/wiki/Robert_St%C3%A9nuit" title="Robert Sténuit">Robert Sténuit</a></li> <li><a href="/wiki/Peter_Throckmorton" title="Peter Throckmorton">Peter Throckmorton</a></li> <li><a href="/wiki/Cristina_Zenato" title="Cristina Zenato">Cristina Zenato</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Scuba record<br />holders</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pascal_Bernab%C3%A9" title="Pascal Bernabé">Pascal Bernabé</a></li> <li><a href="/wiki/Jim_Bowden_(diver)" title="Jim Bowden (diver)">Jim Bowden</a></li> <li><a href="/wiki/Mark_Ellyatt" title="Mark Ellyatt">Mark Ellyatt</a></li> <li><a href="/wiki/Sheck_Exley" title="Sheck Exley">Sheck Exley</a></li> <li><a href="/wiki/Nuno_Gomes_(diver)" title="Nuno Gomes (diver)">Nuno Gomes</a></li> <li><a href="/wiki/Claudia_Serpieri" title="Claudia Serpieri">Claudia Serpieri</a></li> <li><a href="/wiki/Krzysztof_Starnawski" title="Krzysztof Starnawski">Krzysztof Starnawski</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater<br />filmmakers<br />and presenters</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Samir_Alhafith" title="Samir Alhafith">Samir Alhafith</a></li> <li><a href="/wiki/David_Attenborough" title="David Attenborough">David Attenborough</a></li> <li><a href="/wiki/Ram%C3%B3n_Bravo" title="Ramón Bravo">Ramón Bravo</a></li> <li><a href="/wiki/Jean-Michel_Cousteau" title="Jean-Michel Cousteau">Jean-Michel Cousteau</a></li> <li><a href="/wiki/Richie_Kohler" title="Richie Kohler">Richie Kohler</a></li> <li><a href="/wiki/Paul_Rose_(TV_presenter)" title="Paul Rose (TV presenter)">Paul Rose</a></li> <li><a href="/wiki/Andy_Torbet" title="Andy Torbet">Andy Torbet</a></li> <li><a href="/wiki/Ivan_Tors" title="Ivan Tors">Ivan Tors</a></li> <li><a href="/wiki/Andrew_Wight" title="Andrew Wight">Andrew Wight</a></li> <li><a href="/wiki/James_Cameron" title="James Cameron">James Cameron</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater<br />photographers</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Doug_Allan" title="Doug Allan">Doug Allan</a></li> <li><a href="/wiki/Tamara_Benitez" title="Tamara Benitez">Tamara Benitez</a></li> <li><a href="/wiki/Georges_Beuchat" title="Georges Beuchat">Georges Beuchat</a></li> <li><a href="/wiki/Adrian_Biddle" title="Adrian Biddle">Adrian Biddle</a></li> <li><a href="/wiki/Jonathan_Bird" title="Jonathan Bird">Jonathan Bird</a></li> <li><a href="/wiki/Eric_Cheng" title="Eric Cheng">Eric Cheng</a></li> <li><a href="/wiki/Neville_Coleman" title="Neville Coleman">Neville Coleman</a></li> <li><a href="/wiki/Jacques_Cousteau" title="Jacques Cousteau">Jacques Cousteau</a></li> <li><a href="/wiki/John_D._Craig" title="John D. Craig">John D. Craig</a></li> <li><a href="/wiki/Ben_Cropp" title="Ben Cropp">Ben Cropp</a></li> <li><a href="/wiki/Bernard_Delemotte" title="Bernard Delemotte">Bernard Delemotte</a></li> <li><a href="/wiki/David_Doubilet" title="David Doubilet">David Doubilet</a></li> <li><a href="/wiki/Candice_Farmer" title="Candice Farmer">Candice Farmer</a></li> <li><a href="/wiki/John_Christopher_Fine" title="John Christopher Fine">John Christopher Fine</a></li> <li><a href="/wiki/Rodney_Fox" title="Rodney Fox">Rodney Fox</a></li> <li><a href="/wiki/Ric_Frazier" title="Ric Frazier">Ric Frazier</a></li> <li><a href="/wiki/Stephen_Frink" title="Stephen Frink">Stephen Frink</a></li> <li><a href="/wiki/Peter_Gimbel" title="Peter Gimbel">Peter Gimbel</a></li> <li><a href="/wiki/Monty_Halls" title="Monty Halls">Monty Halls</a></li> <li><a href="/wiki/Hans_Hass" title="Hans Hass">Hans Hass</a></li> <li><a href="/wiki/Henry_Way_Kendall" title="Henry Way Kendall">Henry Way Kendall</a></li> <li><a href="/wiki/Rudie_Kuiter" class="mw-redirect" title="Rudie Kuiter">Rudie Kuiter</a></li> <li><a href="/wiki/Joseph_B._MacInnis" title="Joseph B. MacInnis">Joseph B. MacInnis</a></li> <li><a href="/wiki/Luis_Marden" title="Luis Marden">Luis Marden</a></li> <li><a href="/wiki/Agnes_Milowka" title="Agnes Milowka">Agnes Milowka</a></li> <li><a href="/wiki/Noel_Monkman" title="Noel Monkman">Noel Monkman</a></li> <li><a href="/wiki/Pete_Oxford" title="Pete Oxford">Pete Oxford</a></li> <li><a href="/wiki/Steve_Parish" title="Steve Parish">Steve Parish</a></li> <li><a href="/wiki/Zale_Parry" title="Zale Parry">Zale Parry</a></li> <li><a href="/wiki/Pierre_Petit_(photographer)" title="Pierre Petit (photographer)">Pierre Petit</a></li> <li><a href="/wiki/Leni_Riefenstahl" title="Leni Riefenstahl">Leni Riefenstahl</a></li> <li><a href="/wiki/Peter_Scoones" title="Peter Scoones">Peter Scoones</a></li> <li><a href="/wiki/Brian_Skerry" title="Brian Skerry">Brian Skerry</a></li> <li><a href="/wiki/Wesley_C._Skiles" title="Wesley C. Skiles">Wesley C. Skiles</a></li> <li><a href="/wiki/E._Lee_Spence" title="E. Lee Spence">E. Lee Spence</a></li> <li><a href="/wiki/Philippe_Tailliez" title="Philippe Tailliez">Philippe Tailliez</a></li> <li><a href="/wiki/Ron_Taylor_(diver)" title="Ron Taylor (diver)">Ron Taylor</a></li> <li><a href="/wiki/Valerie_Taylor_(diver)" title="Valerie Taylor (diver)">Valerie Taylor</a></li> <li><a href="/wiki/Albert_Tillman" title="Albert Tillman">Albert Tillman</a></li> <li><a href="/wiki/John_Veltri" title="John Veltri">John Veltri</a></li> <li><a href="/wiki/Stan_Waterman" title="Stan Waterman">Stan Waterman</a></li> <li><a href="/wiki/Michele_Westmorland" title="Michele Westmorland">Michele Westmorland</a></li> <li><a href="/wiki/John_Ernest_Williamson" title="John Ernest Williamson">John Ernest Williamson</a></li> <li><a href="/wiki/J._Lamar_Worzel" title="J. Lamar Worzel">J. Lamar Worzel</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Underwater<br />explorers</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Caves <ul><li><a href="/wiki/Graham_Balcombe" title="Graham Balcombe">Graham Balcombe</a></li> <li><a href="/wiki/Sheck_Exley" title="Sheck Exley">Sheck Exley</a></li> <li><a href="/wiki/Martyn_Farr" title="Martyn Farr">Martyn Farr</a></li> <li><a href="/wiki/Jochen_Hasenmayer" title="Jochen Hasenmayer">Jochen Hasenmayer</a></li> <li><a href="/wiki/Jill_Heinerth" title="Jill Heinerth">Jill Heinerth</a></li> <li><a href="/wiki/Jarrod_Jablonski" title="Jarrod Jablonski">Jarrod Jablonski</a></li> <li><a href="/wiki/William_Hogarth_Main" title="William Hogarth Main">William Hogarth Main</a></li> <li><a href="/wiki/Tom_Mount" title="Tom Mount">Tom Mount</a></li> <li><a href="/wiki/Jack_Sheppard_(cave_diver)" title="Jack Sheppard (cave diver)">Jack Sheppard</a></li> <li><a href="/wiki/William_Stone_(caver)" title="William Stone (caver)">Bill Stone</a></li></ul></li> <li>Reefs <ul><li><a href="/wiki/Arthur_C._Clarke" title="Arthur C. Clarke">Arthur C. Clarke</a></li></ul></li> <li>Wrecks <ul><li><a href="/wiki/Leigh_Bishop" title="Leigh Bishop">Leigh Bishop</a></li> <li><a href="/wiki/John_Chatterton" title="John Chatterton">John Chatterton</a></li> <li><a href="/wiki/Clive_Cussler" title="Clive Cussler">Clive Cussler</a></li> <li><a href="/wiki/Bill_Nagle" title="Bill Nagle">Bill Nagle</a></li> <li><a href="/wiki/Valerie_van_Heest" title="Valerie van Heest">Valerie van Heest</a></li> <li><a href="/wiki/Aristotelis_Zervoudis" title="Aristotelis Zervoudis">Aristotelis Zervoudis</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aquanaut" title="Aquanaut">Aquanauts</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Andrew_Abercromby" title="Andrew Abercromby">Andrew Abercromby</a></li> <li><a href="/wiki/Joseph_M._Acaba" title="Joseph M. Acaba">Joseph M. Acaba</a></li> <li><a href="/wiki/Clayton_Anderson" title="Clayton Anderson">Clayton Anderson</a></li> <li><a href="/wiki/Richard_R._Arnold" title="Richard R. Arnold">Richard R. Arnold</a></li> <li><a href="/wiki/Serena_Au%C3%B1%C3%B3n-Chancellor" title="Serena Auñón-Chancellor">Serena Auñón-Chancellor</a></li> <li><a href="/wiki/Michael_Barratt_(astronaut)" title="Michael Barratt (astronaut)">Michael Barratt (astronaut)</a></li> <li><a href="/wiki/Robert_A._Barth" title="Robert A. Barth">Robert A. Barth</a></li> <li><a href="/wiki/Bob_Behnken" title="Bob Behnken">Robert L. Behnken</a></li> <li><a href="/wiki/Randolph_Bresnik" title="Randolph Bresnik">Randolph Bresnik</a></li> <li><a href="/wiki/Timothy_J._Broderick" title="Timothy J. Broderick">Timothy J. Broderick</a></li> <li><a href="/wiki/Justin_Brown_(aquanaut)" title="Justin Brown (aquanaut)">Justin Brown</a></li> <li><a href="/wiki/Berry_L._Cannon" title="Berry L. Cannon">Berry L. Cannon</a></li> <li><a href="/wiki/Scott_Carpenter" title="Scott Carpenter">Scott Carpenter</a></li> <li><a href="/wiki/Gregory_Chamitoff" title="Gregory Chamitoff">Gregory Chamitoff</a></li> <li><a href="/wiki/Steve_Chappell" title="Steve Chappell">Steve Chappell</a></li> <li><a href="/wiki/Catherine_Coleman" title="Catherine Coleman">Catherine Coleman</a></li> <li><a href="/wiki/Robin_Cook_(American_novelist)" title="Robin Cook (American novelist)">Robin Cook</a></li> <li><a href="/wiki/Craig_B._Cooper" title="Craig B. Cooper">Craig B. Cooper</a></li> <li><a href="/wiki/Fabien_Cousteau" title="Fabien Cousteau">Fabien Cousteau</a></li> <li><a href="/wiki/Philippe_Cousteau" title="Philippe Cousteau">Philippe Cousteau</a></li> <li><a href="/wiki/Timothy_Creamer" title="Timothy Creamer">Timothy Creamer</a></li> <li><a href="/wiki/Jonathan_Dory" title="Jonathan Dory">Jonathan Dory</a></li> <li><a href="/wiki/Pedro_Duque" title="Pedro Duque">Pedro Duque</a></li> <li><a href="/wiki/Sylvia_Earle" title="Sylvia Earle">Sylvia Earle</a></li> <li><a href="/wiki/Jeanette_Epps" title="Jeanette Epps">Jeanette Epps</a></li> <li><a href="/wiki/Sheck_Exley" title="Sheck Exley">Sheck Exley</a></li> <li><a href="/wiki/Albert_Falco" title="Albert Falco">Albert Falco</a></li> <li><a href="/wiki/Andrew_J._Feustel" title="Andrew J. Feustel">Andrew J. Feustel</a></li> <li><a href="/wiki/Michael_Fincke" title="Michael Fincke">Michael Fincke</a></li> <li><a href="/wiki/Satoshi_Furukawa" title="Satoshi Furukawa">Satoshi Furukawa</a></li> <li><a href="/wiki/Ronald_J._Garan_Jr." title="Ronald J. Garan Jr.">Ronald J. Garan Jr.</a></li> <li><a href="/wiki/Michael_L._Gernhardt" title="Michael L. Gernhardt">Michael L. Gernhardt</a></li> <li><a href="/wiki/Christopher_E._Gerty" title="Christopher E. Gerty">Christopher E. Gerty</a></li> <li><a href="/wiki/David_Gruber" title="David Gruber">David Gruber</a></li> <li><a href="/wiki/Chris_Hadfield" title="Chris Hadfield">Chris Hadfield</a></li> <li><a href="/wiki/Jeremy_Hansen" title="Jeremy Hansen">Jeremy Hansen</a></li> <li><a href="/wiki/Jos%C3%A9_M._Hern%C3%A1ndez" title="José M. Hernández">José M. Hernández</a></li> <li><a href="/wiki/John_Herrington" title="John Herrington">John Herrington</a></li> <li><a href="/wiki/Paul_Hill_(flight_director)" title="Paul Hill (flight director)">Paul Hill</a></li> <li><a href="/wiki/Akihiko_Hoshide" title="Akihiko Hoshide">Akihiko Hoshide</a></li> <li><a href="/wiki/Mark_Hulsbeck" title="Mark Hulsbeck">Mark Hulsbeck</a></li> <li><a href="/wiki/Emma_Hwang" title="Emma Hwang">Emma Hwang</a></li> <li><a href="/wiki/Norishige_Kanai" title="Norishige Kanai">Norishige Kanai</a></li> <li><a href="/wiki/Les_Kaufman" title="Les Kaufman">Les Kaufman</a></li> <li><a href="/wiki/Scott_Kelly_(astronaut)" title="Scott Kelly (astronaut)">Scott Kelly</a></li> <li><a href="/wiki/Karen_Kohanowich" title="Karen Kohanowich">Karen Kohanowich</a></li> <li><a href="/wiki/Timothy_Kopra" title="Timothy Kopra">Timothy Kopra</a></li> <li><a href="/wiki/Dominic_Landucci" title="Dominic Landucci">Dominic Landucci</a></li> <li><a href="/wiki/Jon_Lindbergh" title="Jon Lindbergh">Jon Lindbergh</a></li> <li><a href="/wiki/Kjell_N._Lindgren" title="Kjell N. Lindgren">Kjell N. Lindgren</a></li> <li><a href="/wiki/Michael_L%C3%B3pez-Alegr%C3%ADa" title="Michael López-Alegría">Michael López-Alegría</a></li> <li><a href="/wiki/Joseph_B._MacInnis" title="Joseph B. MacInnis">Joseph B. MacInnis</a></li> <li><a href="/wiki/Sandra_Magnus" title="Sandra Magnus">Sandra Magnus</a></li> <li><a href="/wiki/Thomas_Marshburn" title="Thomas Marshburn">Thomas Marshburn</a></li> <li><a href="/wiki/Matthias_Maurer" title="Matthias Maurer">Matthias Maurer</a></li> <li><a href="/wiki/K._Megan_McArthur" title="K. Megan McArthur">K. Megan McArthur</a></li> <li><a href="/wiki/Craig_McKinley_(physician)" title="Craig McKinley (physician)">Craig McKinley</a></li> <li><a href="/wiki/Jessica_Meir" title="Jessica Meir">Jessica Meir</a></li> <li><a href="/wiki/Simone_Melchior" title="Simone Melchior">Simone Melchior</a></li> <li><a href="/wiki/Dorothy_Metcalf-Lindenburger" title="Dorothy Metcalf-Lindenburger">Dorothy Metcalf-Lindenburger</a></li> <li><a href="/wiki/Andreas_Mogensen" title="Andreas Mogensen">Andreas Mogensen</a></li> <li><a href="/wiki/Karen_Nyberg" title="Karen Nyberg">Karen Nyberg</a></li> <li><a href="/wiki/John_D._Olivas" title="John D. Olivas">John D. Olivas</a></li> <li><a href="/wiki/Takuya_Onishi" title="Takuya Onishi">Takuya Onishi</a></li> <li><a href="/wiki/Luca_Parmitano" title="Luca Parmitano">Luca Parmitano</a></li> <li><a href="/wiki/Nicholas_Patrick" title="Nicholas Patrick">Nicholas Patrick</a></li> <li><a href="/wiki/Tim_Peake" title="Tim Peake">Tim Peake</a></li> <li><a href="/wiki/Thomas_Pesquet" title="Thomas Pesquet">Thomas Pesquet</a></li> <li><a href="/wiki/Marc_Reagan" title="Marc Reagan">Marc Reagan</a></li> <li><a href="/wiki/Garrett_Reisman" title="Garrett Reisman">Garrett Reisman</a></li> <li><a href="/wiki/Kathleen_Rubins" title="Kathleen Rubins">Kathleen Rubins</a></li> <li><a href="/wiki/Dick_Rutkowski" title="Dick Rutkowski">Dick Rutkowski</a></li> <li><a href="/wiki/Tara_Ruttley" title="Tara Ruttley">Tara Ruttley</a></li> <li><a href="/wiki/David_Saint-Jacques" title="David Saint-Jacques">David Saint-Jacques</a></li> <li><a href="/wiki/Josef_Schmid_(flight_surgeon)" title="Josef Schmid (flight surgeon)">Josef Schmid</a></li> <li><a href="/wiki/Robert_Sheats" title="Robert Sheats">Robert Sheats</a></li> <li><a href="/wiki/Dewey_Smith" title="Dewey Smith">Dewey Smith</a></li> <li><a href="/wiki/Steve_Squyres" title="Steve Squyres">Steve Squyres</a></li> <li><a href="/wiki/Heidemarie_Stefanyshyn-Piper" title="Heidemarie Stefanyshyn-Piper">Heidemarie Stefanyshyn-Piper</a></li> <li><a href="/wiki/Robert_St%C3%A9nuit" title="Robert Sténuit">Robert Sténuit</a></li> <li><a href="/wiki/Herv%C3%A9_Stevenin" title="Hervé Stevenin">Hervé Stevenin</a></li> <li><a href="/wiki/Nicole_Stott" title="Nicole Stott">Nicole Stott</a></li> <li><a href="/wiki/James_Talacek" title="James Talacek">James Talacek</a></li> <li><a href="/wiki/Daniel_M._Tani" title="Daniel M. Tani">Daniel M. Tani</a></li> <li><a href="/wiki/Robert_Thirsk" title="Robert Thirsk">Robert Thirsk</a></li> <li><a href="/wiki/Bill_Todd" title="Bill Todd">Bill Todd</a></li> <li><a href="/wiki/Mark_T._Vande_Hei" title="Mark T. Vande Hei">Mark T. Vande Hei</a></li> <li><a href="/wiki/Koichi_Wakata" title="Koichi Wakata">Koichi Wakata</a></li> <li><a href="/wiki/Rex_J._Walheim" title="Rex J. Walheim">Rex J. Walheim</a></li> <li><a href="/wiki/Shannon_Walker" title="Shannon Walker">Shannon Walker</a></li> <li><a href="/wiki/John_Morgan_Wells" title="John Morgan Wells">John Morgan Wells</a></li> <li><a href="/wiki/Joachim_Wendler" title="Joachim Wendler">Joachim Wendler</a></li> <li><a href="/wiki/Douglas_H._Wheelock" title="Douglas H. Wheelock">Douglas H. Wheelock</a></li> <li><a href="/wiki/Peggy_Whitson" title="Peggy Whitson">Peggy Whitson</a></li> <li><a href="/wiki/Dafydd_Williams" title="Dafydd Williams">Dafydd Williams</a></li> <li><a href="/wiki/Jeffrey_Williams_(astronaut)" title="Jeffrey Williams (astronaut)">Jeffrey Williams</a></li> <li><a href="/wiki/Sunita_Williams" title="Sunita Williams">Sunita Williams</a></li> <li><a href="/wiki/Reid_Wiseman" title="Reid Wiseman">Reid Wiseman</a></li> <li><a href="/wiki/Kimiya_Yui" title="Kimiya Yui">Kimiya Yui</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Writers and journalists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Michael_C._Barnette" title="Michael C. Barnette">Michael C. Barnette</a></li> <li><a href="/wiki/Victor_Berge" title="Victor Berge">Victor Berge</a></li> <li><a href="/wiki/Philippe_Diol%C3%A9" title="Philippe Diolé">Philippe Diolé</a></li> <li><a href="/wiki/Gary_Gentile" title="Gary Gentile">Gary Gentile</a></li> <li><a href="/wiki/Bret_Gilliam" title="Bret Gilliam">Bret Gilliam</a></li> <li><a href="/wiki/Bob_Halstead" title="Bob Halstead">Bob Halstead</a></li> <li><a href="/wiki/Hillary_Hauser" title="Hillary Hauser">Hillary Hauser</a></li> <li><a href="/wiki/Trevor_Jackson_(diver)" title="Trevor Jackson (diver)">Trevor Jackson</a></li> <li><a href="/wiki/Steve_Lewis_(diver)" title="Steve Lewis (diver)">Steve Lewis</a></li> <li><a href="/wiki/John_Mattera" title="John Mattera">John Mattera</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Rescuers</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Craig_Challen" title="Craig Challen">Craig Challen</a></li> <li><a href="/wiki/Richard_Harris_(anaesthetist)" title="Richard Harris (anaesthetist)">Richard Harris</a></li> <li><a href="/wiki/Rick_Stanton" title="Rick Stanton">Rick Stanton</a></li> <li><a href="/wiki/John_Volanthen" title="John Volanthen">John Volanthen</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Frogmen</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lionel_Crabb" title="Lionel Crabb">Lionel Crabb</a></li> <li><a href="/wiki/Ian_Edward_Fraser" title="Ian Edward Fraser">Ian Edward Fraser</a></li> <li><a href="/wiki/Sydney_Knowles" title="Sydney Knowles">Sydney Knowles</a></li> <li><a href="/wiki/James_Joseph_Magennis" title="James Joseph Magennis">James Joseph Magennis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Commercial salvors</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Keith_Jessop" title="Keith Jessop">Keith Jessop</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Science_of_underwater_diving" style="font-size:114%;margin:0 4em"><a href="/wiki/Science_of_underwater_diving" title="Science of underwater diving">Science of underwater diving</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_researchers_in_underwater_diving" title="List of researchers in underwater diving">List of researchers in underwater diving</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_physics" title="Diving physics">Diving<br />physics</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Metre_sea_water" title="Metre sea water">Metre sea water</a></li> <li><a href="/wiki/Neutral_buoyancy" title="Neutral buoyancy">Neutral buoyancy</a></li> <li><a href="/wiki/Underwater_acoustics" title="Underwater acoustics">Underwater acoustics</a> <ul><li><a href="/wiki/Modulated_ultrasound" title="Modulated ultrasound">Modulated ultrasound</a></li></ul></li> <li><a href="/wiki/Underwater_vision" title="Underwater vision">Underwater vision</a> <ul><li><a href="/wiki/Underwater_computer_vision" title="Underwater computer vision">Underwater computer vision</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Diving_physiology" class="mw-redirect" title="Diving physiology">Diving<br />physiology</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Diving_reflex#Blood_shift" title="Diving reflex">Blood shift</a></li> <li><a href="/wiki/Cold_shock_response" title="Cold shock response">Cold shock response</a></li> <li><a href="/wiki/Diving_reflex" title="Diving reflex">Diving reflex</a></li> <li><a href="/wiki/Equivalent_narcotic_depth" title="Equivalent narcotic depth">Equivalent narcotic depth</a></li> <li><a href="/wiki/Maximum_operating_depth" title="Maximum operating depth">Maximum operating depth</a></li> <li><a href="/wiki/Physiological_response_to_water_immersion" class="mw-redirect" title="Physiological response to water immersion">Physiological response to water immersion</a></li> <li><a href="/wiki/Thermal_balance_of_the_underwater_diver" title="Thermal balance of the underwater diver">Thermal balance of the underwater diver</a></li> <li><a href="/wiki/Underwater_vision" title="Underwater vision">Underwater vision</a></li> <li><a href="/wiki/Work_of_breathing" title="Work of breathing">Work of breathing</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Decompressiontheory" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Decompression_theory" title="Decompression theory">Decompression<br />theory</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Decompression models: <ul><li><a href="/wiki/B%C3%BChlmann_decompression_algorithm" title="Bühlmann decompression algorithm">Bühlmann decompression algorithm</a></li> <li><a href="/wiki/Haldane%27s_decompression_model" title="Haldane's decompression model">Haldane's decompression model</a></li> <li><a href="/wiki/Reduced_gradient_bubble_model" title="Reduced gradient bubble model">Reduced gradient bubble model</a></li> <li><a href="/wiki/Thalmann_algorithm" title="Thalmann algorithm">Thalmann algorithm</a></li> <li><a href="/wiki/Thermodynamic_model_of_decompression" title="Thermodynamic model of decompression">Thermodynamic model of decompression</a></li> <li><a href="/wiki/Varying_Permeability_Model" title="Varying Permeability Model">Varying Permeability Model</a></li></ul></li> <li><a href="/wiki/Equivalent_air_depth" title="Equivalent air depth">Equivalent air depth</a></li> <li><a href="/wiki/Oxygen_window" title="Oxygen window">Oxygen window</a></li> <li><a href="/wiki/Physiology_of_decompression" title="Physiology of decompression">Physiology of decompression</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Underwater_diving_environment" title="Underwater diving environment">Diving<br />environments</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Underwater_exploration" title="Underwater exploration">Underwater exploration</a> <ul><li><a href="/wiki/Deep-sea_exploration" title="Deep-sea exploration">Deep-sea exploration</a></li></ul></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Classification</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_diving_environments_by_type" title="List of diving environments by type">List of diving environments by type</a></li> <li><a href="/wiki/Altitude_diving" title="Altitude diving">Altitude diving</a></li> <li><a href="/wiki/Benign_water_diving" class="mw-redirect" title="Benign water diving">Benign water diving</a></li> <li><a href="/wiki/Confined_water_diving" class="mw-redirect" title="Confined water diving">Confined water diving</a></li> <li><a href="/wiki/Deep_diving" title="Deep diving">Deep diving</a></li> <li><a href="/wiki/Inland_diving" class="mw-redirect" title="Inland diving">Inland diving</a></li> <li><a href="/wiki/Inshore_diving" class="mw-redirect" title="Inshore diving">Inshore diving</a></li> <li><a href="/wiki/Muck_diving" title="Muck diving">Muck diving</a></li> <li><a href="/wiki/Night_diving" title="Night diving">Night diving</a></li> <li><a href="/wiki/Open-water_diving" title="Open-water diving">Open-water diving</a> <ul><li><a href="/wiki/Black-water_diving" class="mw-redirect" title="Black-water diving">Black-water diving</a></li> <li><a href="/wiki/Blue-water_diving" class="mw-redirect" title="Blue-water diving">Blue-water diving</a></li></ul></li> <li><a href="/wiki/Penetration_diving" title="Penetration diving">Penetration diving</a> <ul><li><a href="/wiki/Cave_diving" title="Cave diving">Cave diving</a> <ul><li><a href="/wiki/Torricellian_chamber" title="Torricellian chamber">Torricellian chamber</a></li></ul></li> <li><a href="/wiki/Ice_diving" title="Ice diving">Ice diving</a></li> <li><a href="/wiki/Wreck_diving" title="Wreck diving">Wreck diving</a></li></ul></li> <li><a href="/wiki/Recreational_dive_sites" title="Recreational dive sites">Recreational dive sites</a></li> <li><a href="/wiki/Underwater_environment" title="Underwater environment">Underwater environment</a></li> <li><a href="/wiki/Underwater_diving_environment" title="Underwater diving environment">Underwater diving environment</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Impact</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Environmental_impact_of_recreational_diving" title="Environmental impact of recreational diving">Environmental impact of recreational diving</a></li> <li><a href="/wiki/Low_impact_diving" title="Low impact diving">Low impact diving</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Other" style="font-size:114%;margin:0 4em">Other</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bathysphere" title="Bathysphere">Bathysphere</a></li> <li><a href="/wiki/Defense_against_swimmer_incursions" title="Defense against swimmer incursions">Defense against swimmer incursions</a> <ul><li><a href="/wiki/Diver_detection_sonar" title="Diver detection sonar">Diver detection sonar</a></li></ul></li> <li><a href="/wiki/Offshore_survey" class="mw-redirect" title="Offshore survey">Offshore survey</a></li> <li><a href="/wiki/Rugged_compact_camera" class="mw-redirect" title="Rugged compact camera">Rugged compact camera</a></li> <li><a href="/wiki/Underwater_domain_awareness" title="Underwater domain awareness">Underwater domain awareness</a></li> <li><a href="/wiki/Underwater_vehicle" title="Underwater vehicle">Underwater vehicle</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Deep-submergence_vehicle" title="Deep-submergence vehicle">Deep-submergence<br />vehicle</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aluminaut" title="Aluminaut"><i>Aluminaut</i></a></li> <li><a href="/wiki/DSV_Alvin" title="DSV Alvin">DSV <i>Alvin</i></a></li> <li><a href="/wiki/American_submarine_NR-1" title="American submarine NR-1">American submarine NR-1</a></li> <li><a href="/wiki/Bathyscaphe" title="Bathyscaphe">Bathyscaphe</a> <ul><li><a href="/wiki/Archim%C3%A8de" title="Archimède"><i>Archimède</i></a></li> <li><a href="/wiki/FNRS-2" title="FNRS-2">FNRS-2</a></li> <li><a href="/wiki/FNRS-3" title="FNRS-3">FNRS-3</a></li> <li><a href="/wiki/Sea_Pole-class_bathyscaphe#Harmony_class_bathyscaphe" title="Sea Pole-class bathyscaphe"><i>Harmony</i> class bathyscaphe</a></li> <li><a href="/wiki/Sea_Pole-class_bathyscaphe" title="Sea Pole-class bathyscaphe"><i>Sea Pole</i>-class bathyscaphe</a></li> <li><a href="/wiki/Bathyscaphe_Trieste_II" class="mw-redirect" title="Bathyscaphe Trieste II"><i>Trieste II</i></a></li></ul></li> <li><a href="/wiki/Deepsea_Challenger" title="Deepsea Challenger"><i>Deepsea Challenger</i></a></li> <li><a href="/wiki/Ictineu_3" title="Ictineu 3"><i>Ictineu 3</i></a></li> <li><a href="/wiki/JAGO_(German_research_submersible)" title="JAGO (German research submersible)"><i>JAGO</i></a></li> <li><a href="/wiki/Jiaolong_(submersible)" title="Jiaolong (submersible)"><i>Jiaolong</i></a></li> <li><a href="/wiki/Konsul-class_submersible" title="Konsul-class submersible"><i>Konsul</i>-class submersible</a></li> <li><a href="/wiki/DSV_Limiting_Factor" title="DSV Limiting Factor"><i>Limiting Factor</i></a></li> <li><a href="/wiki/Russian_submarine_Losharik" title="Russian submarine Losharik">Russian submarine <i>Losharik</i></a></li> <li><a href="/wiki/Mir_(submersible)" title="Mir (submersible)"><i>Mir</i></a></li> <li><a href="/wiki/Nautile" title="Nautile"><i>Nautile</i></a></li> <li><a href="/wiki/Pisces-class_deep_submergence_vehicle" title="Pisces-class deep submergence vehicle"><i>Pisces</i>-class deep submergence vehicle</a></li> <li><a href="/wiki/DSV_Sea_Cliff" title="DSV Sea Cliff">DSV <i>Sea Cliff</i></a></li> <li><a href="/wiki/DSV_Shinkai" title="DSV Shinkai">DSV <i>Shinkai</i></a></li> <li><a href="/wiki/DSV_Shinkai_2000" title="DSV Shinkai 2000">DSV <i>Shinkai 2000</i></a></li> <li><a href="/wiki/DSV_Shinkai_6500" title="DSV Shinkai 6500">DSV <i>Shinkai 6500</i></a></li> <li><a href="/wiki/DSV_Turtle" title="DSV Turtle">DSV <i>Turtle</i></a></li> <li><a href="/wiki/DSV-5_Nemo" title="DSV-5 Nemo">DSV-5 <i>Nemo</i></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Submarine_rescue" title="Submarine rescue">Submarine rescue</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/International_Submarine_Escape_and_Rescue_Liaison_Office" title="International Submarine Escape and Rescue Liaison Office">International Submarine Escape and Rescue Liaison Office</a></li> <li><a href="/wiki/Submarine_Escape_and_Rescue_system_(Royal_Swedish_Navy)" title="Submarine Escape and Rescue system (Royal Swedish Navy)">Submarine Escape and Rescue system (Royal Swedish Navy)</a></li> <li><a href="/wiki/McCann_Rescue_Chamber" title="McCann Rescue Chamber">McCann Rescue Chamber</a></li> <li><a href="/wiki/Submarine_rescue_ship" title="Submarine rescue ship">Submarine rescue ship</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Deep-submergencerescue_vehicle" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Deep-submergence_rescue_vehicle" title="Deep-submergence rescue vehicle">Deep-submergence<br />rescue vehicle</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/LR5" title="LR5">LR5</a></li> <li><a href="/wiki/LR7" title="LR7">LR7</a></li> <li><a href="/wiki/MSM-1" title="MSM-1">MSM-1</a></li> <li><a href="/wiki/Mystic-class_deep-submergence_rescue_vehicle" title="Mystic-class deep-submergence rescue vehicle"><i>Mystic</i>-class deep-submergence rescue vehicle</a> <ul><li><a href="/wiki/DSRV-1_Mystic" title="DSRV-1 Mystic">DSRV-1 <i>Mystic</i></a></li> <li><a href="/wiki/DSRV-2_Avalon" title="DSRV-2 Avalon">DSRV-2 <i>Avalon</i></a></li></ul></li> <li><a href="/wiki/NATO_Submarine_Rescue_System" title="NATO Submarine Rescue System">NATO Submarine Rescue System</a></li> <li><a href="/wiki/Priz-class_deep-submergence_rescue_vehicle" title="Priz-class deep-submergence rescue vehicle"><i>Priz</i>-class deep-submergence rescue vehicle</a> <ul><li><a href="/wiki/Russian_deep_submergence_rescue_vehicle_AS-28" title="Russian deep submergence rescue vehicle AS-28">Russian deep submergence rescue vehicle AS-28</a></li> <li><a href="/wiki/Russian_submarine_AS-34" title="Russian submarine AS-34">Russian submarine AS-34</a></li></ul></li> <li><a href="/wiki/ASRV_Remora" class="mw-redirect" title="ASRV Remora">ASRV <i>Remora</i></a></li> <li><a href="/wiki/SRV-300" title="SRV-300">SRV-300</a></li> <li><a href="/wiki/Submarine_Rescue_Diving_Recompression_System" title="Submarine Rescue Diving Recompression System">Submarine Rescue Diving Recompression System</a></li> <li><a href="/wiki/Type_7103_DSRV" class="mw-redirect" title="Type 7103 DSRV">Type 7103 DSRV</a></li> <li><a href="/wiki/URF_(Swedish_Navy)" title="URF (Swedish Navy)">URF (Swedish Navy)</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/w/index.php?title=Submarine_escape&action=edit&redlink=1" class="new" title="Submarine escape (page does not exist)">Submarine escape</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Escape_trunk" title="Escape trunk">Escape trunk</a></li> <li><a href="/wiki/Submarine_escape_training_facility" title="Submarine escape training facility">Submarine escape training facility</a></li> <li><a href="/wiki/Submarine_Escape_Training_Facility_(Australia)" title="Submarine Escape Training Facility (Australia)">Submarine Escape Training Facility (Australia)</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Escape_set" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Escape_set" class="mw-redirect" title="Escape set">Escape set</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Davis_Submerged_Escape_Apparatus" title="Davis Submerged Escape Apparatus">Davis Submerged Escape Apparatus</a></li> <li><a href="/wiki/Momsen_lung" title="Momsen lung">Momsen lung</a></li> <li><a href="/wiki/Steinke_hood" title="Steinke hood">Steinke hood</a></li> <li><a href="/wiki/Submarine_Escape_Immersion_Equipment" title="Submarine Escape Immersion Equipment">Submarine Escape Immersion Equipment</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Special<br />interest<br />groups</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Artificial_Reef_Society_of_British_Columbia" title="Artificial Reef Society of British Columbia">Artificial Reef Society of British Columbia</a></li> <li><a href="/wiki/CMAS_Europe" title="CMAS Europe">CMAS Europe</a></li> <li><a href="/wiki/Coral_Reef_Alliance" title="Coral Reef Alliance">Coral Reef Alliance</a></li> <li><a href="/wiki/Divers_Alert_Network" title="Divers Alert Network">Divers Alert Network</a></li> <li><a href="/wiki/Green_Fins" title="Green Fins">Green Fins</a></li> <li><a href="/wiki/Finger_Lakes_Underwater_Preserve_Association" title="Finger Lakes Underwater Preserve Association">Finger Lakes Underwater Preserve Association</a></li> <li><a href="/wiki/Karst_Underwater_Research" title="Karst Underwater Research">Karst Underwater Research</a></li> <li><a href="/wiki/Nautical_Archaeology_Program" title="Nautical Archaeology Program">Nautical Archaeology Program</a></li> <li><a href="/wiki/Nautical_Archaeology_Society" title="Nautical Archaeology Society">Nautical Archaeology Society</a></li> <li><a href="/wiki/Naval_Air_Command_Sub_Aqua_Club" title="Naval Air Command Sub Aqua Club">Naval Air Command Sub Aqua Club</a></li> <li><a href="/wiki/PADI_AWARE" title="PADI AWARE">PADI AWARE</a></li> <li><a href="/wiki/Reef_Check" title="Reef Check">Reef Check</a></li> <li><a href="/wiki/Reef_Life_Survey" title="Reef Life Survey">Reef Life Survey</a></li> <li><a href="/wiki/Rubicon_Foundation" title="Rubicon Foundation">Rubicon Foundation</a></li> <li><a href="/wiki/Save_Ontario_Shipwrecks" title="Save Ontario Shipwrecks">Save Ontario Shipwrecks</a></li> <li><a href="/wiki/SeaKeys" title="SeaKeys">SeaKeys</a></li> <li><a href="/wiki/Sea_Research_Society" title="Sea Research Society">Sea Research Society</a></li> <li><a href="/wiki/Society_for_Underwater_Historical_Research" title="Society for Underwater Historical Research">Society for Underwater Historical Research</a></li> <li><a href="/wiki/Society_for_Underwater_Technology" title="Society for Underwater Technology">Society for Underwater Technology</a></li> <li><a href="/wiki/Underwater_Archaeology_Branch,_Naval_History_%26_Heritage_Command" title="Underwater Archaeology Branch, Naval History & Heritage Command">Underwater Archaeology Branch, Naval History & Heritage Command</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Neutral buoyancy<br />facilities for<br />Astronaut training</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Neutral_Buoyancy_Laboratory" title="Neutral Buoyancy Laboratory">Neutral Buoyancy Laboratory</a></li> <li><a href="/wiki/Neutral_buoyancy_pool" title="Neutral buoyancy pool">Neutral buoyancy pool</a></li> <li><a href="/wiki/Neutral_buoyancy_simulation_as_a_training_aid" title="Neutral buoyancy simulation as a training aid">Neutral buoyancy simulation as a training aid</a></li> <li><a href="/wiki/Neutral_Buoyancy_Simulator" title="Neutral Buoyancy Simulator">Neutral Buoyancy Simulator</a></li> <li><a href="/wiki/Space_Systems_Laboratory_(Maryland)" title="Space Systems Laboratory (Maryland)">Space Systems Laboratory</a></li> <li><a href="/wiki/Yuri_Gagarin_Cosmonaut_Training_Center" title="Yuri Gagarin Cosmonaut Training Center">Yuri Gagarin Cosmonaut Training Center</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Nautilus_Productions" title="Nautilus Productions">Nautilus Productions</a></li> <li><a href="/wiki/Helicopter_Aircrew_Breathing_Device" title="Helicopter Aircrew Breathing Device">Helicopter Aircrew Breathing Device</a></li> <li><a href="/wiki/Scuba_diving_therapy" title="Scuba diving therapy">Scuba diving therapy</a></li> <li><a href="/wiki/Seabed_mining" title="Seabed mining">Seabed mining</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight: bold;"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Category:Underwater_diving" title="Category:Underwater diving">Category</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <b><a href="https://commons.wikimedia.org/wiki/Category:Underwater_diving" class="extiw" title="commons:Category:Underwater diving">Commons</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Glossary_of_underwater_diving_terminology" title="Glossary of underwater diving terminology">Glossary</a></b></li> <li><b>Indexes: <a href="/wiki/Index_of_recreational_dive_sites" title="Index of recreational dive sites">Dive sites</a></b></li> <li><b><a href="/wiki/Index_of_underwater_divers" title="Index of underwater divers">Divers</a></b></li> <li><b><a href="/wiki/Index_of_underwater_diving" title="Index of underwater diving">Diving</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="Outline"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Global_thinking.svg/10px-Global_thinking.svg.png" decoding="async" width="10" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Global_thinking.svg/15px-Global_thinking.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/41/Global_thinking.svg/21px-Global_thinking.svg.png 2x" data-file-width="130" data-file-height="200" /></span></span> <b><a href="/wiki/Outline_of_underwater_diving" title="Outline of underwater diving">Outline</a></b></li> <li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <b><a href="/wiki/Portal:Underwater_diving" title="Portal:Underwater diving">Portal</a></b></li></ul> </div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;padding:0.15em 0;column-gap:1em;align-items:baseline;margin:0;list-style:none}.mw-parser-output .portal-bar-content-related{margin:0;list-style:none}.mw-parser-output .portal-bar-item{display:inline-block;margin:0.15em 0.2em;min-height:24px;line-height:24px}@media screen and (max-width:768px){.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;flex-flow:column wrap;align-items:baseline}.mw-parser-output .portal-bar-header{text-align:center;flex:0;padding-left:0.5em;margin:0 auto}.mw-parser-output .portal-bar-related{font-size:100%;align-items:flex-start}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;align-items:center;flex:0;column-gap:1em;border-top:1px solid #a2a9b1;margin:0 auto;list-style:none}.mw-parser-output .portal-bar-content-related{border-top:none;margin:0;list-style:none}}.mw-parser-output .navbox+link+.portal-bar,.mw-parser-output .navbox+style+.portal-bar,.mw-parser-output .navbox+link+.portal-bar-bordered,.mw-parser-output .navbox+style+.portal-bar-bordered,.mw-parser-output .sister-bar+link+.portal-bar,.mw-parser-output .sister-bar+style+.portal-bar,.mw-parser-output .portal-bar+.navbox-styles+.navbox,.mw-parser-output .portal-bar+.navbox-styles+.sister-bar{margin-top:-1px}</style><div class="portal-bar noprint metadata noviewer portal-bar-bordered" role="navigation" aria-label="Portals"><span class="portal-bar-header"><a href="/wiki/Wikipedia:Contents/Portals" title="Wikipedia:Contents/Portals">Portal</a>:</span><ul class="portal-bar-content"><li class="portal-bar-item"><span class="nowrap"><span typeof="mw:File"><span><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/WHO_Rod.svg/8px-WHO_Rod.svg.png" decoding="async" width="8" height="19" class="mw-file-element" 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