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class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Skeleton"> <div class="vector-toc-text"> 2.2 Skeleton </div> </a> <ul id="toc-Skeleton-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Jaws_and_teeth" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Jaws_and_teeth"> <div class="vector-toc-text"> 2.3 Jaws and teeth </div> </a> <ul id="toc-Jaws_and_teeth-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Brain" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Brain"> <div class="vector-toc-text"> 2.4 Brain </div> </a> <ul id="toc-Brain-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Biological_systems" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Biological_systems"> <div class="vector-toc-text"> 2.5 Biological systems </div> </a> <ul id="toc-Biological_systems-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Senses" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Senses"> <div class="vector-toc-text"> 2.6 Senses </div> </a> <ul id="toc-Senses-sublist" class="vector-toc-list"> <li id="toc-Spermaceti_organ_and_melon" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Spermaceti_organ_and_melon"> <div class="vector-toc-text"> 2.6.1 Spermaceti organ and melon </div> </a> <ul id="toc-Spermaceti_organ_and_melon-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Eyes_and_vision" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Eyes_and_vision"> <div class="vector-toc-text"> 2.6.2 Eyes and vision </div> </a> <ul id="toc-Eyes_and_vision-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Sleeping" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sleeping"> <div class="vector-toc-text"> 2.7 Sleeping </div> </a> <ul id="toc-Sleeping-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Genetics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Genetics"> <div class="vector-toc-text"> 2.8 Genetics </div> </a> <ul id="toc-Genetics-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Vocalization_complex" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Vocalization_complex"> <div class="vector-toc-text"> 3 Vocalization complex </div> </a> <button aria-controls="toc-Vocalization_complex-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Vocalization complex subsection </button> <ul id="toc-Vocalization_complex-sublist" class="vector-toc-list"> <li id="toc-Mechanism" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Mechanism"> <div class="vector-toc-text"> 3.1 Mechanism </div> </a> <ul id="toc-Mechanism-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vocalization_types" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Vocalization_types"> <div class="vector-toc-text"> 3.2 Vocalization types </div> </a> <ul id="toc-Vocalization_types-sublist" class="vector-toc-list"> <li id="toc-Codas" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Codas"> <div class="vector-toc-text"> 3.2.1 Codas </div> </a> <ul id="toc-Codas-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </li> <li id="toc-Ecology" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Ecology"> <div class="vector-toc-text"> 4 Ecology </div> </a> <button aria-controls="toc-Ecology-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Ecology subsection </button> <ul id="toc-Ecology-sublist" class="vector-toc-list"> <li id="toc-Distribution" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Distribution"> <div class="vector-toc-text"> 4.1 Distribution </div> </a> <ul id="toc-Distribution-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Diet" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Diet"> <div class="vector-toc-text"> 4.2 Diet </div> </a> <ul id="toc-Diet-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Life_cycle" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Life_cycle"> <div class="vector-toc-text"> 5 Life cycle </div> </a> <ul id="toc-Life_cycle-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Social_behaviour" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Social_behaviour"> <div class="vector-toc-text"> 6 Social behaviour </div> </a> <button aria-controls="toc-Social_behaviour-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Social behaviour subsection </button> <ul id="toc-Social_behaviour-sublist" class="vector-toc-list"> <li id="toc-Relations_within_the_species" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Relations_within_the_species"> <div class="vector-toc-text"> 6.1 Relations within the species </div> </a> <ul id="toc-Relations_within_the_species-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Relations_with_other_species" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Relations_with_other_species"> <div class="vector-toc-text"> 6.2 Relations with other species </div> </a> <ul id="toc-Relations_with_other_species-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Parasites" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Parasites"> <div class="vector-toc-text"> 6.3 Parasites </div> </a> <ul id="toc-Parasites-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Evolutionary_history" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Evolutionary_history"> <div class="vector-toc-text"> 7 Evolutionary history </div> </a> <button aria-controls="toc-Evolutionary_history-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Evolutionary history subsection </button> <ul id="toc-Evolutionary_history-sublist" class="vector-toc-list"> <li id="toc-Fossil_record" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Fossil_record"> <div class="vector-toc-text"> 7.1 Fossil record </div> </a> <ul id="toc-Fossil_record-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Phylogeny" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Phylogeny"> <div class="vector-toc-text"> 7.2 Phylogeny </div> </a> <ul id="toc-Phylogeny-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Relationship_with_humans" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Relationship_with_humans"> <div class="vector-toc-text"> 8 Relationship with humans </div> </a> <button aria-controls="toc-Relationship_with_humans-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle Relationship with humans subsection </button> <ul id="toc-Relationship_with_humans-sublist" class="vector-toc-list"> <li id="toc-Sperm_whaling" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sperm_whaling"> <div class="vector-toc-text"> 8.1 Sperm whaling </div> </a> <ul id="toc-Sperm_whaling-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Current_conservation_status" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Current_conservation_status"> <div class="vector-toc-text"> 8.2 Current conservation status </div> </a> <ul id="toc-Current_conservation_status-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cultural_importance" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Cultural_importance"> <div class="vector-toc-text"> 8.3 Cultural importance </div> </a> <ul id="toc-Cultural_importance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Watching_sperm_whales" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Watching_sperm_whales"> <div class="vector-toc-text"> 8.4 Watching sperm whales </div> </a> <ul id="toc-Watching_sperm_whales-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Plastic_waste" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Plastic_waste"> <div class="vector-toc-text"> 8.5 Plastic waste </div> </a> <ul id="toc-Plastic_waste-sublist" class="vector-toc-list"> </ul> </li> </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"> 9 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> 10 Notes </div> </a> <ul id="toc-Notes-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"> 11 References </div> </a> <ul id="toc-References-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"> 12 Further reading </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"> 13 External links </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" > Toggle the table of contents </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">Sperm whale</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 87 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-87" aria-hidden="true" > 87 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Potvis" title="Potvis – Afrikaans" lang="af" hreflang="af" data-title="Potvis" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-ar badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D9%88%D8%AA_%D8%A7%D9%84%D8%B9%D9%86%D8%A8%D8%B1" title="حوت العنبر – Arabic" lang="ar" hreflang="ar" data-title="حوت العنبر" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Aragonese" lang="an" hreflang="an" data-title="Physeter macrocephalus" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target">Aragonés</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Asturian" lang="ast" hreflang="ast" data-title="Physeter macrocephalus" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ka%C5%9Falot" title="Kaşalot – Azerbaijani" lang="az" hreflang="az" data-title="Kaşalot" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%AE%E0%A7%8D%E0%A6%AC%E0%A6%B0_%E0%A6%AE%E0%A6%BE%E0%A6%9B_(%E0%A6%A4%E0%A6%BF%E0%A6%AE%E0%A6%BF)" title="আম্বর মাছ (তিমি) – Bangla" lang="bn" hreflang="bn" data-title="আম্বর মাছ (তিমি)" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Boah-phang-keng" title="Boah-phang-keng – Minnan" lang="nan" hreflang="nan" data-title="Boah-phang-keng" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Belarusian" lang="be" hreflang="be" data-title="Кашалот" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D1%91%D1%82" title="Кашалёт – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Кашалёт" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target">Беларуская (тарашкевіца)</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Bulgarian" lang="bg" hreflang="bg" data-title="Кашалот" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/C%27hwezher_bras" title="C'hwezher bras – Breton" lang="br" hreflang="br" data-title="C'hwezher bras" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target">Brezhoneg</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Catxalot" title="Catxalot – Catalan" lang="ca" hreflang="ca" data-title="Catxalot" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Cebuano" lang="ceb" hreflang="ceb" data-title="Physeter macrocephalus" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target">Cebuano</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Vorva%C5%88_obrovsk%C3%BD" title="Vorvaň obrovský – Czech" lang="cs" hreflang="cs" data-title="Vorvaň obrovský" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Capodogliu" title="Capodogliu – Corsican" lang="co" hreflang="co" data-title="Capodogliu" data-language-autonym="Corsu" data-language-local-name="Corsican" class="interlanguage-link-target">Corsu</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Morfil_Sberm" title="Morfil Sberm – Welsh" lang="cy" hreflang="cy" data-title="Morfil Sberm" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Kaskelothval" title="Kaskelothval – Danish" lang="da" hreflang="da" data-title="Kaskelothval" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Pottwal" title="Pottwal – German" lang="de" hreflang="de" data-title="Pottwal" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/%C5%81%C3%B3%C3%B3%CA%BCtsoh_bitsii%CA%BC_dik%CA%BC%C3%A1n%C3%AD" title="Łóóʼtsoh bitsiiʼ dikʼání – Navajo" lang="nv" hreflang="nv" data-title="Łóóʼtsoh bitsiiʼ dikʼání" data-language-autonym="Diné bizaad" data-language-local-name="Navajo" class="interlanguage-link-target">Diné bizaad</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ka%C5%A1elott" title="Kašelott – Estonian" lang="et" hreflang="et" data-title="Kašelott" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A6%CF%85%CF%83%CE%B7%CF%84%CE%AE%CF%81%CE%B1%CF%82" title="Φυσητήρας – Greek" lang="el" hreflang="el" data-title="Φυσητήρας" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-es badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://es.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Spanish" lang="es" hreflang="es" data-title="Physeter macrocephalus" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ka%C4%89aloto" title="Kaĉaloto – Esperanto" lang="eo" hreflang="eo" data-title="Kaĉaloto" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Kaxalote" title="Kaxalote – Basque" lang="eu" hreflang="eu" data-title="Kaxalote" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%86%D9%87%D9%86%DA%AF_%D8%B9%D9%86%D8%A8%D8%B1" title="نهنگ عنبر – Persian" lang="fa" hreflang="fa" data-title="نهنگ عنبر" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Avgustur" title="Avgustur – Faroese" lang="fo" hreflang="fo" data-title="Avgustur" data-language-autonym="Føroyskt" data-language-local-name="Faroese" class="interlanguage-link-target">Føroyskt</a></li><li class="interlanguage-link interwiki-fr badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://fr.wikipedia.org/wiki/Grand_cachalot" title="Grand cachalot – French" lang="fr" hreflang="fr" data-title="Grand cachalot" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Caiseal%C3%B3id" title="Caisealóid – Irish" lang="ga" hreflang="ga" data-title="Caisealóid" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Cachalote" title="Cachalote – Galician" lang="gl" hreflang="gl" data-title="Cachalote" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%96%A5%EA%B3%A0%EB%9E%98" title="향고래 – Korean" lang="ko" hreflang="ko" data-title="향고래" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BF%D5%A1%D5%B7%D5%A1%D5%AC%D5%B8%D5%BF" title="Կաշալոտ – Armenian" lang="hy" hreflang="hy" data-title="Կաշալոտ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target">Հայերեն</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Ulje%C5%A1ura" title="Ulješura – Croatian" lang="hr" hreflang="hr" data-title="Ulješura" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Kashaloto" title="Kashaloto – Ido" lang="io" hreflang="io" data-title="Kashaloto" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target">Ido</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Paus_sperma" title="Paus sperma – Indonesian" lang="id" hreflang="id" data-title="Paus sperma" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/B%C3%BArhvalur" title="Búrhvalur – Icelandic" lang="is" hreflang="is" data-title="Búrhvalur" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target">Íslenska</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Italian" lang="it" hreflang="it" data-title="Physeter macrocephalus" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%90%D7%A9%D7%AA%D7%9F_%D7%92%D7%93%D7%95%D7%9C-%D7%A8%D7%90%D7%A9" title="ראשתן גדול-ראש – Hebrew" lang="he" hreflang="he" data-title="ראשתן גדול-ראש" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Paus_sperma" title="Paus sperma – Javanese" lang="jv" hreflang="jv" data-title="Paus sperma" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target">Jawa</a></li><li class="interlanguage-link interwiki-kl mw-list-item"><a href="https://kl.wikipedia.org/wiki/Kigutilissuaq" title="Kigutilissuaq – Kalaallisut" lang="kl" hreflang="kl" data-title="Kigutilissuaq" data-language-autonym="Kalaallisut" data-language-local-name="Kalaallisut" class="interlanguage-link-target">Kalaallisut</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%99%E1%83%90%E1%83%A8%E1%83%90%E1%83%9A%E1%83%9D%E1%83%A2%E1%83%98" title="კაშალოტი – Georgian" lang="ka" hreflang="ka" data-title="კაშალოტი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Kazakh" lang="kk" hreflang="kk" data-title="Кашалот" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-avk mw-list-item"><a href="https://avk.wikipedia.org/wiki/Odayol_(Physeter_catodon)" title="Odayol (Physeter catodon) – Kotava" lang="avk" hreflang="avk" data-title="Odayol (Physeter catodon)" data-language-autonym="Kotava" data-language-local-name="Kotava" class="interlanguage-link-target">Kotava</a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Kyrgyz" lang="ky" hreflang="ky" data-title="Кашалот" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target">Кыргызча</a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Latin" lang="la" hreflang="la" data-title="Physeter macrocephalus" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lv badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://lv.wikipedia.org/wiki/Ka%C5%A1alots" title="Kašalots – Latvian" lang="lv" hreflang="lv" data-title="Kašalots" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target">Latviešu</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Ka%C5%A1alotas" title="Kašalotas – Lithuanian" lang="lt" hreflang="lt" data-title="Kašalotas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Potv%C3%A8s" title="Potvès – Limburgish" lang="li" hreflang="li" data-title="Potvès" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target">Limburgs</a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Caxalote" title="Caxalote – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Caxalote" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target">Lingua Franca Nova</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Nagy_%C3%A1mbr%C3%A1scet" title="Nagy ámbráscet – Hungarian" lang="hu" hreflang="hu" data-title="Nagy ámbráscet" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Macedonian" lang="mk" hreflang="mk" data-title="Кашалот" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%8E%E0%B4%A3%E0%B5%8D%E0%B4%A3%E0%B4%A4%E0%B5%8D%E0%B4%A4%E0%B4%BF%E0%B4%AE%E0%B4%BF%E0%B4%82%E0%B4%97%E0%B4%BF%E0%B4%B2%E0%B4%82" title="എണ്ണത്തിമിംഗിലം – Malayalam" lang="ml" hreflang="ml" data-title="എണ്ണത്തിമിംഗിലം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-mi mw-list-item"><a href="https://mi.wikipedia.org/wiki/Par%C4%81oa_(kararehe)" title="Parāoa (kararehe) – Māori" lang="mi" hreflang="mi" data-title="Parāoa (kararehe)" data-language-autonym="Māori" data-language-local-name="Māori" class="interlanguage-link-target">Māori</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AD%D9%88%D8%AA_%D8%A7%D9%84%D8%B9%D9%86%D8%A8%D8%B1" title="حوت العنبر – Egyptian Arabic" lang="arz" hreflang="arz" data-title="حوت العنبر" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Paus_sperma" title="Paus sperma – Malay" lang="ms" hreflang="ms" data-title="Paus sperma" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Mongolian" lang="mn" hreflang="mn" data-title="Кашалот" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target">Монгол</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Potvis" title="Potvis – Dutch" lang="nl" hreflang="nl" data-title="Potvis" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%9E%E3%83%83%E3%82%B3%E3%82%A6%E3%82%AF%E3%82%B8%E3%83%A9" title="マッコウクジラ – Japanese" lang="ja" hreflang="ja" data-title="マッコウクジラ" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Spermhval" title="Spermhval – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Spermhval" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Spermkval" title="Spermkval – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Spermkval" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Cachal%C3%B2t" title="Cachalòt – Occitan" lang="oc" hreflang="oc" data-title="Cachalòt" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target">Occitan</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Kashalot" title="Kashalot – Uzbek" lang="uz" hreflang="uz" data-title="Kashalot" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%B3%D9%BE%D8%B1%D9%85_%D9%88%DB%81%DB%8C%D9%84" title="سپرم وہیل – Western Punjabi" lang="pnb" hreflang="pnb" data-title="سپرم وہیل" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target">پنجابی</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Kaszalot_spermacetowy" title="Kaszalot spermacetowy – Polish" lang="pl" hreflang="pl" data-title="Kaszalot spermacetowy" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Cachalote" title="Cachalote – Portuguese" lang="pt" hreflang="pt" data-title="Cachalote" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ca%C8%99alot" title="Cașalot – Romanian" lang="ro" hreflang="ro" data-title="Cașalot" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-ru badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Russian" lang="ru" hreflang="ru" data-title="Кашалот" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Kashaloti" title="Kashaloti – Albanian" lang="sq" hreflang="sq" data-title="Kashaloti" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target">Shqip</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Sperm_whale" title="Sperm whale – Simple English" lang="en-simple" hreflang="en-simple" data-title="Sperm whale" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Vorva%C5%88_tuponos%C3%BD" title="Vorvaň tuponosý – Slovak" lang="sk" hreflang="sk" data-title="Vorvaň tuponosý" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Kit_glava%C4%8D" title="Kit glavač – Slovenian" lang="sl" hreflang="sl" data-title="Kit glavač" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%86%DB%95%DA%BE%DB%95%D9%86%DA%AF%DB%8C_%D8%B9%DB%95%D9%86%D8%A8%DB%95%D8%B1" title="نەھەنگی عەنبەر – Central Kurdish" lang="ckb" hreflang="ckb" data-title="نەھەنگی عەنبەر" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target">کوردی</a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A3%D1%99%D0%B5%D1%88%D1%83%D1%80%D0%B0" title="Уљешура – Serbian" lang="sr" hreflang="sr" data-title="Уљешура" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Ulje%C5%A1ura" title="Ulješura – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Ulješura" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Kaskelotti" title="Kaskelotti – Finnish" lang="fi" hreflang="fi" data-title="Kaskelotti" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Kaskelot" title="Kaskelot – Swedish" lang="sv" hreflang="sv" data-title="Kaskelot" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Physeter_macrocephalus" title="Physeter macrocephalus – Tagalog" lang="tl" hreflang="tl" data-title="Physeter macrocephalus" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target">Tagalog</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%8E%E0%AE%A3%E0%AF%8D%E0%AE%A3%E0%AF%86%E0%AE%AF%E0%AF%8D%E0%AE%A4%E0%AF%8D_%E0%AE%A4%E0%AE%BF%E0%AE%AE%E0%AE%BF%E0%AE%99%E0%AF%8D%E0%AE%95%E0%AE%BF%E0%AE%B2%E0%AE%AE%E0%AF%8D" title="எண்ணெய்த் திமிங்கிலம் – Tamil" lang="ta" hreflang="ta" data-title="எண்ணெய்த் திமிங்கிலம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target">தமிழ்</a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A7%E0%B8%B2%E0%B8%AC%E0%B8%AB%E0%B8%B1%E0%B8%A7%E0%B8%97%E0%B8%B8%E0%B8%A2" title="วาฬหัวทุย – Thai" lang="th" hreflang="th" data-title="วาฬหัวทุย" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%90%D0%BD%D0%B1%D0%B0%D1%80%D0%B7%D0%BE" title="Анбарзо – Tajik" lang="tg" hreflang="tg" data-title="Анбарзо" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target">Тоҷикӣ</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/%C4%B0sperme%C3%A7et_balinas%C4%B1" title="İspermeçet balinası – Turkish" lang="tr" hreflang="tr" data-title="İspermeçet balinası" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82" title="Кашалот – Ukrainian" lang="uk" hreflang="uk" data-title="Кашалот" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li 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data-file-width="512" data-file-height="512" /></a></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">Largest species of toothed whale</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">"Cachalot" redirects here. For other uses, see <a href="/wiki/Cachalot_(disambiguation)" class="mw-disambig" title="Cachalot (disambiguation)">Cachalot (disambiguation)</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Kashalot" redirects here. For the Soviet submarine, see <a href="/wiki/Kashalot-class_submarine" title="Kashalot-class submarine">Kashalot-class submarine</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">For the 2015 film, see <a href="/wiki/Sperm_Whale_(film)" title="Sperm Whale (film)">Sperm Whale (film)</a>.</div> <table class="infobox biota" style="text-align: left; width: 200px; font-size: 100%"> <tbody><tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)">Sperm whale<a href="#cite_note-msw3-1">[1]</a> <div style="font-size: 85%;">Temporal range: <a href="/wiki/Pliocene" title="Pliocene">Pliocene</a> – Recent<a href="#cite_note-2">[2]</a> <div id="Timeline-row" style="margin: 4px auto 0; clear:both; width:220px; padding:0px; height:18px; overflow:visible; white-space:nowrap; border:1px #666; border-style:solid none; position:relative; z-index:0; font-size:97%;"> <div style="position:absolute; height:100%; left:0px; width:207.23076923077px; padding-left:5px; text-align:left; background-color:rgb(254,217,106); background-image: linear-gradient(to right, rgba(255,255,255,1), rgba(254,217,106,1) 15%, rgba(254,217,106,1));"><a href="/wiki/Precambrian" title="Precambrian">PreꞒ</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(127,160,86); left:37.636923076923px; width:18.073846153846px;"><a href="/wiki/Cambrian" title="Cambrian">Ꞓ</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(0,146,112); left:55.710769230769px; width:14.08px;"><a href="/wiki/Ordovician" title="Ordovician">O</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(179,225,182); left:69.790769230769px; width:8.3261538461539px;"><a href="/wiki/Silurian" title="Silurian">S</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(203,140,55); left:78.116923076923px; width:20.409230769231px;"><a href="/wiki/Devonian" title="Devonian">D</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(103,165,153); left:98.526153846154px; width:20.307692307692px;"><a href="/wiki/Carboniferous" title="Carboniferous">C</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(240,64,40); left:118.83384615385px; width:15.907015384615px;"><a href="/wiki/Permian" title="Permian">P</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(129,43,146); left:134.74086153846px; width:17.092984615385px;"><a href="/wiki/Triassic" title="Triassic">T</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(52,178,201); left:151.83384615385px; width:19.089230769231px;"><a href="/wiki/Jurassic" title="Jurassic">J</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(127,198,78); left:170.92307692308px; width:26.738461538462px;"><a href="/wiki/Cretaceous" title="Cretaceous">K</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(253,154,82); left:197.66153846154px; width:14.543692307692px;"><a href="/wiki/Paleogene" title="Paleogene">Pg</a></div> <div style="position:absolute; height:100%; text-align:center; background-color:rgb(255,230,25); left:212.20523076923px; width:6.9215384615385px;"><a href="/wiki/Neogene" title="Neogene">N</a></div> <div id="end-border" style="position:absolute; height:100%; background-color:#666; width:1px; left:219px"></div><div style="margin:0 auto; line-height:0; clear:both; width:220px; padding:0px; height:8px; overflow:visible; background-color:transparent; position:relative; top:-4px; z-index:100;"> <div style="position:absolute; left:218.78153846154px; font-size:50%"><div style="position:relative; left:-0.42em">↓</div></div> </div> </div></div> </th></tr> <tr> <td colspan="2" style="text-align: center"><a href="/wiki/File:Mother_and_baby_sperm_whale.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Mother_and_baby_sperm_whale.jpg/220px-Mother_and_baby_sperm_whale.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Mother_and_baby_sperm_whale.jpg/330px-Mother_and_baby_sperm_whale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Mother_and_baby_sperm_whale.jpg/440px-Mother_and_baby_sperm_whale.jpg 2x" data-file-width="5115" data-file-height="2877" /></a> </td></tr> <tr> <td colspan="2" style="text-align: center"><a href="/wiki/File:Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg/220px-Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg.png" decoding="async" width="220" height="89" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg/330px-Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg/440px-Sperm-Whale-Scale-Chart-SVG-Steveoc86.svg.png 2x" data-file-width="1920" data-file-height="780" /></a> </td></tr> <tr style="color:inherit; text-align: center; background-color: rgb(235,235,210)"> <th colspan="2"><div style="text-align: center"><a href="/wiki/Conservation_status" title="Conservation status">Conservation status</a></div> </th></tr> <tr> <td colspan="2"><div style="text-align: center"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Status_iucn3.1_VU.svg/220px-Status_iucn3.1_VU.svg.png" decoding="async" width="220" height="59" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Status_iucn3.1_VU.svg/330px-Status_iucn3.1_VU.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Status_iucn3.1_VU.svg/440px-Status_iucn3.1_VU.svg.png 2x" data-file-width="512" data-file-height="137" /> <a href="/wiki/Vulnerable_species" title="Vulnerable species">Vulnerable</a>  (<a href="/wiki/IUCN_Red_List" title="IUCN Red List">IUCN 3.1</a>)<a href="#cite_note-iucn-3">[3]</a></div> </td></tr> <tr> <td colspan="2"><div style="text-align: center"><a href="/wiki/CITES" title="CITES">CITES</a> Appendix I (<a href="/wiki/CITES" title="CITES">CITES</a>)<a href="#cite_note-CITES-4">[4]</a></div> </td></tr> <tr> <th colspan="2" style="color:inherit; min-width:15em; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Taxonomy_(biology)" title="Taxonomy (biology)">Scientific classification</a> <a href="/wiki/Template:Taxonomy/Physeter" title="Edit this classification"><img alt="Edit this classification" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/15px-OOjs_UI_icon_edit-ltr.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/23px-OOjs_UI_icon_edit-ltr.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr.svg/30px-OOjs_UI_icon_edit-ltr.svg.png 2x" data-file-width="20" data-file-height="20" /></a> </th></tr> <tr> <td>Domain: </td> <td><a href="/wiki/Eukaryote" title="Eukaryote">Eukaryota</a> </td></tr> <tr> <td>Kingdom: </td> <td><a href="/wiki/Animal" title="Animal">Animalia</a> </td></tr> <tr> <td>Phylum: </td> <td><a href="/wiki/Chordate" title="Chordate">Chordata</a> </td></tr> <tr> <td>Class: </td> <td><a href="/wiki/Mammal" title="Mammal">Mammalia</a> </td></tr> <tr> <td>Order: </td> <td><a href="/wiki/Artiodactyl" title="Artiodactyl">Artiodactyla</a> </td></tr> <tr> <td>Infraorder: </td> <td><a href="/wiki/Cetacea" title="Cetacea">Cetacea</a> </td></tr> <tr> <td>Family: </td> <td><a href="/wiki/Physeteridae" class="mw-redirect" title="Physeteridae">Physeteridae</a> </td></tr> <tr> <td>Genus: </td> <td><a href="/wiki/Physeter" title="Physeter">Physeter</a> </td></tr> <tr> <td>Species: </td> <td><div style="display:inline" class="species">P. macrocephalus</div> </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Binomial_nomenclature" title="Binomial nomenclature">Binomial name</a> </th></tr> <tr> <td colspan="2" style="text-align: center">Physeter macrocephalus <div style="font-size: 85%;"><a href="/wiki/Carl_Linnaeus" title="Carl Linnaeus">Linnaeus</a>, <a href="/wiki/10th_edition_of_Systema_Naturae" title="10th edition of Systema Naturae">1758</a></div> </td></tr> <tr> <td colspan="2" style="text-align: center"><a href="/wiki/File:Sperm_whale_distribution_(Pacific_equirectangular).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/220px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/330px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/440px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg 2x" data-file-width="1258" data-file-height="730" /></a> </td></tr> <tr> <td colspan="2" style="text-align: center; font-size: 88%">Major sperm whale grounds </td></tr> <tr> <th colspan="2" style="color:inherit; text-align: center; background-color: rgb(235,235,210)"><a href="/wiki/Synonym_(taxonomy)" title="Synonym (taxonomy)">Synonyms</a> </th></tr> <tr> <td colspan="2" style="text-align: left"> <ul><li>Physeter catodon Linnaeus, 1758</li> <li>Physeter microps Linnaeus, 1758</li> <li>Physeter tursio Linnaeus, 1758</li> <li>Physeter australasianus <a href="/wiki/Desmoulins" class="mw-redirect" title="Desmoulins">Desmoulins</a>, 1822</li></ul> </td></tr> </tbody></table><style data-mw-deduplicate="TemplateStyles:r1238732961">@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox.biota tr{background:transparent!important}html.skin-theme-clientpref-night .mw-parser-output .infobox.biota img{background:transparent}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox.biota tr{background:transparent!important}html.skin-theme-clientpref-os .mw-parser-output .infobox.biota img{background:white}}.mw-parser-output .infobox.biota .taxobox-edit-taxonomy img{background:transparent!important}body.skin-vector .mw-parser-output table.biota.infobox{margin-top:0.5em}body.skin--responsive .mw-parser-output table.biota.infobox tr.taxonrow td{padding:2px 10px}</style> The sperm whale or cachalot<a href="#cite_note-5">[a]</a> (Physeter macrocephalus) is the largest of the <a href="/wiki/Toothed_whale" title="Toothed whale">toothed whales</a> and the largest toothed <a href="/wiki/Predator" class="mw-redirect" title="Predator">predator</a>. It is the only living member of the <a href="/wiki/Genus_(biology)" class="mw-redirect" title="Genus (biology)">genus</a> <a href="/wiki/Physeter" title="Physeter">Physeter</a> and one of three extant <a href="/wiki/Species" title="Species">species</a> in the <a href="/wiki/Sperm_whale_family" class="mw-redirect" title="Sperm whale family">sperm whale family</a>, along with the <a href="/wiki/Pygmy_sperm_whale" title="Pygmy sperm whale">pygmy sperm whale</a> and <a href="/wiki/Dwarf_sperm_whale" title="Dwarf sperm whale">dwarf sperm whale</a> of the genus <a href="/wiki/Kogia" title="Kogia">Kogia</a>. The sperm whale is a <a href="/wiki/Pelagic" class="mw-redirect" title="Pelagic">pelagic</a> <a href="/wiki/Mammal" title="Mammal">mammal</a> with a worldwide range, and will migrate seasonally for feeding and breeding.<a href="#cite_note-6">[5]</a> Females and young males live together in groups, while mature males (bulls) live solitary lives outside of the mating season. The females cooperate to protect and <a href="/wiki/Lactation" title="Lactation">nurse</a> their young. Females give birth every four to twenty years, and care for the calves for more than a decade. A mature, healthy sperm whale has no natural predators, although calves and weakened adults are sometimes killed by <a href="/wiki/Cetacea#Social_relations" title="Cetacea">pods</a> of <a href="/wiki/Killer_whale" class="mw-redirect" title="Killer whale">killer whales</a> (orcas). Mature males average 16 metres (52 ft) in length, with the head representing up to one-third of the animal's length. Plunging to 2,250 metres (7,380 ft), it is the third deepest diving mammal, exceeded only by the <a href="/wiki/Southern_elephant_seal" title="Southern elephant seal">southern elephant seal</a> and <a href="/wiki/Cuvier%27s_beaked_whale" title="Cuvier's beaked whale">Cuvier's beaked whale</a>.<a href="#cite_note-plosone-2014-7">[6]</a><a href="#cite_note-Elephantseal-8">[7]</a> The sperm whale uses <a href="/wiki/Animal_echolocation" title="Animal echolocation">echolocation</a> and <a href="#Vocalization_complex">vocalization</a> with source level as loud as 236 <a href="/wiki/Decibel" title="Decibel">decibels</a> (re 1 μPa m) underwater,<a href="#cite_note-9">[8]</a><a href="#cite_note-natgeo-10">[9]</a> the loudest of any animal.<a href="#cite_note-11">[10]</a> It has the largest brain on Earth, more than five times heavier than a human's. Sperm whales can live 70 years or more.<a href="#cite_note-princeton-12">[11]</a><a href="#cite_note-audubon-13">[12]</a><a href="#cite_note-Cetacean_Societies-14">[13]</a> Sperm whales' heads are filled with a waxy substance called "<a href="/wiki/Spermaceti" title="Spermaceti">spermaceti</a>" (sperm oil), from which the whale derives its name. Spermaceti was a prime target of the <a href="/wiki/Whaling" title="Whaling">whaling</a> industry and was sought after for use in oil lamps, lubricants, and candles. <a href="/wiki/Ambergris" title="Ambergris">Ambergris</a>, a solid waxy waste product sometimes present in its digestive system, is still highly valued as a <a href="/wiki/Fixative_(perfumery)" title="Fixative (perfumery)">fixative in perfumes</a>, among other uses. Beachcombers look out for ambergris as <a href="/wiki/Flotsam,_jetsam,_lagan_and_derelict#Flotsam" title="Flotsam, jetsam, lagan and derelict">flotsam</a>.<a href="#cite_note-15">[14]</a> <a href="/wiki/Sperm_whaling" title="Sperm whaling">Sperm whaling</a> was a major industry in the 19th century, depicted in the novel <a href="/wiki/Moby-Dick" title="Moby-Dick">Moby-Dick</a>. The species is protected by the <a href="/wiki/International_Whaling_Commission" title="International Whaling Commission">International Whaling Commission</a> moratorium, and is listed as <a href="/wiki/Vulnerable_species" title="Vulnerable species">vulnerable</a> by the <a href="/wiki/International_Union_for_Conservation_of_Nature" title="International Union for Conservation of Nature">International Union for Conservation of Nature</a>. <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Taxonomy_and_naming">Taxonomy and naming</h2></div> <div class="mw-heading mw-heading3"><h3 id="Etymology">Etymology</h3></div> The name "sperm whale" is a clipping of "spermaceti whale". <a href="/wiki/Spermaceti" title="Spermaceti">Spermaceti</a>, originally mistakenly identified as the whales' <a href="/wiki/Semen" title="Semen">semen</a>, is the semi-liquid, waxy substance found within the whale's head.<a href="#cite_note-WahlbergEtAl2005-16">[15]</a> (See "<a href="#Spermaceti_organ_and_melon">Spermaceti organ and melon</a>" below.) The sperm whale is also known as the "cachalot", which is thought to derive from the archaic French for 'tooth' or 'big teeth', as preserved for example in the word caishau in the <a href="/wiki/Gascon_language" class="mw-redirect" title="Gascon language">Gascon</a> dialect (a word of either <a href="/wiki/Romance_languages" title="Romance languages">Romance</a><a href="#cite_note-17">[16]</a> or <a href="/wiki/Basque_language" title="Basque language">Basque</a><a href="#cite_note-18">[17]</a> origin). The etymological dictionary of <a href="/wiki/Joan_Coromines" title="Joan Coromines">Corominas</a> says the origin is uncertain, but it suggests that it comes from the <a href="/wiki/Vulgar_Latin" title="Vulgar Latin">Vulgar Latin</a> cappula 'sword hilts'.<a href="#cite_note-19">[18]</a> The word cachalot came to English via French from Spanish or Portuguese <a href="https://en.wiktionary.org/wiki/cachalote#Spanish" class="extiw" title="wikt:cachalote">cachalote</a>, perhaps from <a href="/wiki/Galician_language" title="Galician language">Galician</a>/Portuguese <a href="https://en.wiktionary.org/wiki/cachola#Portuguese" class="extiw" title="wikt:cachola">cachola</a> 'big head'.<a href="#cite_note-20">[19]</a> The term is retained in the Russian word for the animal, kashalot (<a href="https://en.wiktionary.org/wiki/%D0%BA%D0%B0%D1%88%D0%B0%D0%BB%D0%BE%D1%82#Russian" class="extiw" title="wikt:кашалот">кашалот</a>), as well as in many other languages.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The scientific genus name Physeter comes from the <a href="/wiki/Ancient_Greek" title="Ancient Greek">Greek</a> physētēr (<a href="https://en.wiktionary.org/wiki/%CF%86%CF%85%CF%83%CE%B7%CF%84%CE%AE%CF%81#Ancient_Greek" class="extiw" title="wikt:φυσητήρ">φυσητήρ</a>), meaning 'blowpipe, blowhole (of a whale)', or – as a <a href="/wiki/Pars_pro_toto" title="Pars pro toto">pars pro toto</a> – 'whale'.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The specific name macrocephalus is Latinized from the Greek makroképhalos (<a href="https://en.wiktionary.org/wiki/%CE%BC%CE%B1%CE%BA%CF%81%CE%BF%CE%BA%CE%AD%CF%86%CE%B1%CE%BB%CE%BF%CF%82#Ancient_Greek" class="extiw" title="wikt:μακροκέφαλος">μακροκέφαλος</a> 'big-headed'), from makros (<a href="https://en.wiktionary.org/wiki/%CE%BC%CE%B1%CE%BA%CF%81%CF%8C%CF%82#Ancient_Greek" class="extiw" title="wikt:μακρός">μακρός</a>) + kephalē (<a href="https://en.wiktionary.org/wiki/%CE%BA%CE%B5%CF%86%CE%B1%CE%BB%CE%AE#Ancient_Greek" class="extiw" title="wikt:κεφαλή">κεφαλή</a>).[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Its synonymous specific name catodon means 'down-tooth', from the Greek elements <a href="https://en.wiktionary.org/wiki/cata-#Ancient_Greek" class="extiw" title="wikt:cata-">cat(a)-</a> ('below') and <a href="https://en.wiktionary.org/wiki/%E1%BD%80%CE%B4%CF%8E%CE%BD#Ancient_Greek" class="extiw" title="wikt:ὀδών">odṓn</a> ('tooth'); so named because it has visible teeth only in its lower jaw.<a href="#cite_note-21">[20]</a> (See "<a href="#Jaws_and_teeth">Jaws and teeth</a>" below.) Another synonym australasianus ('<a href="/wiki/Australasia" title="Australasia">Australasian</a>') was applied to sperm whales in the Southern Hemisphere.<a href="#cite_note-22">[21]</a> <div class="mw-heading mw-heading3"><h3 id="Taxonomy">Taxonomy</h3></div> The sperm whale belongs to the <a href="/wiki/Order_(biology)" title="Order (biology)">order</a> <a href="/wiki/Cetartiodactyla" class="mw-redirect" title="Cetartiodactyla">Cetartiodactyla</a>,<a href="#cite_note-23">[22]</a> the order containing all <a href="/wiki/Cetaceans" class="mw-redirect" title="Cetaceans">cetaceans</a> and <a href="/wiki/Even-toed_ungulates" class="mw-redirect" title="Even-toed ungulates">even-toed ungulates</a>. It is a member of the unranked clade <a href="/wiki/Cetacea" title="Cetacea">Cetacea</a>, with all the whales, dolphins, and porpoises, and further classified into <a href="/wiki/Odontoceti" class="mw-redirect" title="Odontoceti">Odontoceti</a>, containing all the toothed whales and dolphins. It is the sole extant species of its genus, <a href="/wiki/Physeter" title="Physeter">Physeter</a>, in the family <a href="/wiki/Physeteridae" class="mw-redirect" title="Physeteridae">Physeteridae</a>. Two species of the related extant genus <a href="/wiki/Kogia" title="Kogia">Kogia</a>, the <a href="/wiki/Pygmy_sperm_whale" title="Pygmy sperm whale">pygmy sperm whale</a> Kogia breviceps and the <a href="/wiki/Dwarf_sperm_whale" title="Dwarf sperm whale">dwarf sperm whale</a> K. sima, are placed either in this family or in the family <a href="/wiki/Kogiidae" title="Kogiidae">Kogiidae</a>.<a href="#cite_note-24">[23]</a> In some taxonomic schemes the families <a href="/wiki/Kogiidae" title="Kogiidae">Kogiidae</a> and <a href="/wiki/Physeteroidea" title="Physeteroidea">Physeteridae</a> are combined as the superfamily <a href="/wiki/Physeteroidea" title="Physeteroidea">Physeteroidea</a> (see the separate entry on the <a href="/wiki/Sperm_whale_family" class="mw-redirect" title="Sperm whale family">sperm whale family</a>).<a href="#cite_note-Acrophyseter-25">[24]</a> Swedish ichthyologist <a href="/wiki/Peter_Artedi" title="Peter Artedi">Peter Artedi</a> described it as Physeter catodon in his 1738 work Genera piscium, from the report of a beached specimen in Orkney in 1693 and two beached in the Netherlands in 1598 and 1601.<a href="#cite_note-Artedi_1730-26">[25]</a> The 1598 specimen was near Berkhey.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The sperm whale is one of the species originally described by <a href="/wiki/Carl_Linnaeus" title="Carl Linnaeus">Carl Linnaeus</a> in his landmark 1758 <a href="/wiki/10th_edition_of_Systema_Naturae" title="10th edition of Systema Naturae">10th edition of Systema Naturae</a>. He recognised four species in the genus Physeter.<a href="#cite_note-27">[26]</a> Experts soon realised that just one such species exists, although there has been debate about whether this should be named P. catodon or P. macrocephalus, two of the names used by Linnaeus. Both names are still used, although most recent authors now accept macrocephalus as the valid name, limiting catodon's status to a lesser synonym. Until 1974, the species was generally known as P. catodon. In that year, however, Dutch zoologists Antonius M. Husson and <a href="/wiki/Lipke_Holthuis" title="Lipke Holthuis">Lipke Holthuis</a> proposed that the correct name should be P. macrocephalus, the second name in the genus Physeter published by Linnaeus concurrently with P. catodon. This proposition was based on the grounds that the names were synonyms published simultaneously, and, therefore, the ICZN <a href="/wiki/Principle_of_the_First_Reviser" class="mw-redirect" title="Principle of the First Reviser">Principle of the First Reviser</a> should apply. In this instance, it led to the choice of P. macrocephalus over P. catodon, a view re-stated in Holthuis, 1987.<a href="#cite_note-28">[27]</a> This has been adopted by most subsequent authors, although Schevill (1986<a href="#cite_note-29">[28]</a> and 1987<a href="#cite_note-30">[29]</a>) argued that macrocephalus was published with an inaccurate description and that therefore only the species catodon was valid, rendering the principle of "First Reviser" inapplicable. The most recent version of <a href="/wiki/ITIS" class="mw-redirect" title="ITIS">ITIS</a> has altered its usage from P. catodon to P. macrocephalus,<a href="#cite_note-31">[30]</a> following L. B. Holthuis and more recent (2008) discussions with relevant experts.<a href="#cite_note-32">[31]</a><a href="#cite_note-33">[32]</a> Furthermore, The Taxonomy Committee of the <a href="/wiki/Society_for_Marine_Mammalogy" title="Society for Marine Mammalogy">Society for Marine Mammalogy</a>, the largest international association of marine mammal scientists in the world, officially uses Physeter macrocephalus when publishing their definitive <a href="/wiki/List_of_marine_mammal_species" title="List of marine mammal species">list of marine mammal species</a>.<a href="#cite_note-34">[33]</a> <div class="mw-heading mw-heading2"><h2 id="Biology">Biology</h2></div> <div class="mw-heading mw-heading3"><h3 id="External_appearance">External appearance</h3></div> <table class="wikitable" style="float:right; margin-left:2px; margin:10px"> <caption>Average sizes<a href="#cite_note-princeton-12">[11]</a><a href="#cite_note-Hal2003-35">[34]</a> </caption> <tbody><tr> <th></th> <th>Length</th> <th>Weight </th></tr> <tr> <th>Male </th> <td>16 metres (52 ft)</td> <td>45 tonnes (50 short tons) </td></tr> <tr> <th>Female </th> <td>11 metres (36 ft)</td> <td>15 tonnes (17 short tons) </td></tr> <tr> <th>Newborn </th> <td>4 metres (13 ft)</td> <td>1 tonne (1.1 short tons) </td></tr></tbody></table> The sperm whale is the largest toothed whale and is among the most <a href="/wiki/Sexual_dimorphism" title="Sexual dimorphism">sexually dimorphic</a> of all <a href="/wiki/Cetacean" class="mw-redirect" title="Cetacean">cetaceans</a>.<a href="#cite_note-McClain-36">[35]</a> Both sexes are about the same size at birth,<a href="#cite_note-princeton-12">[11]</a> but mature males are typically 30% to 50% longer and three times as massive as females.<a href="#cite_note-encyc-37">[36]</a><a href="#cite_note-Nowak-2003-38">[37]</a> Newborn sperm whales are usually between 3.7 and 4.3 meters (12 and 14 ft) long.<a href="#cite_note-39">[38]</a> Female sperm whales are sexually mature at 8 to 9 meters (26 to 30 ft) in length, whilst males are sexually mature at 11 to 12 meters (36 to 39 ft).<a href="#cite_note-Dufault-1999-40">[39]</a> Female sperm whales are physically mature at about 10.6 to 11 meters (35 to 36 ft) in length and generally do not achieve lengths greater than 12 metres (39 ft).<a href="#cite_note-McClain-36">[35]</a><a href="#cite_note-Nowak-2003-38">[37]</a><a href="#cite_note-Dufault-1999-40">[39]</a> The largest female sperm whale measured up to 12.3 meters (40 ft) long, and an individual of such size would have weighed about 17 tonnes (19 short tons).<a href="#cite_note-41">[40]</a><a href="#cite_note-42">[41]</a> Male sperm whales are physically mature at about 15 to 16 meters (49 to 52 ft) in length, and larger males can generally achieve 18 to 19 meters (59 to 62 ft).<a href="#cite_note-Dufault-1999-40">[39]</a><a href="#cite_note-Ellis-2011-43">[42]</a><a href="#cite_note-McClain-36">[35]</a> An 18 meters (59 ft) long male sperm whale is estimated to have weighed 57 tonnes (56 long tons; 63 short tons).<a href="#cite_note-Hal2003-35">[34]</a> By contrast, the <a href="/wiki/List_of_cetacean_species" class="mw-redirect" title="List of cetacean species">second largest toothed whale</a> (<a href="/wiki/Baird%27s_beaked_whale" title="Baird's beaked whale">Baird's beaked whale</a>) measures up to 12.8 meters (42 ft) and weighs up to 14 tonnes (15 short tons).<a href="#cite_note-44">[43]</a> There are occasional reports of individual sperm whales achieving even greater lengths, with some historical claims reaching or exceeding 80 feet (24 m). One example is the whale that sank the <a href="/wiki/Essex_(1799_whaleship)" class="mw-redirect" title="Essex (1799 whaleship)">Essex</a> (one of the incidents behind <a href="/wiki/Moby-Dick" title="Moby-Dick">Moby-Dick</a>), which was claimed to be 85 feet (26 m). However, there is disagreement as to the accuracy of some of these claims, which are often considered exaggerations or as being measured along the curves of the body.<a href="#cite_note-Wood-45">[44]</a><a href="#cite_note-McClain-36">[35]</a><a href="#cite_note-Ellis-2011-43">[42]</a> An individual measuring 20.7 metres (68 ft) was reported from a <a href="/wiki/Soviet_whalers" class="mw-redirect" title="Soviet whalers">Soviet whaling</a> fleet near the <a href="/wiki/Kuril_Islands" title="Kuril Islands">Kuril Islands</a> in 1950 and is cited by some authors as the largest accurately measured.<a href="#cite_note-McClain-36">[35]</a><a href="#cite_note-Carwardine-46">[45]</a> It has been estimated to weigh 80 tonnes (79 long tons; 88 short tons).<a href="#cite_note-Wood-45">[44]</a> In a review of size variation in marine megafauna, McClain and colleagues noted that the International Whaling Commission's data contained eight individuals larger than 20.7 metres (68 ft). The authors supported a 24-metre (79 ft) male from the South Pacific in 1933 as the largest recorded. However, sizes like these are rare, with 95% of recorded sperm whales below 15.85 metres (52.0 ft).<a href="#cite_note-McClain-36">[35]</a> In 1853, one sperm whale was reported at 62 feet (19 m) in length, with a head measuring 20 feet (6.1 m).<a href="#cite_note-47">[46]</a> Large lower jawbones are held in the British <a href="/wiki/Natural_History_Museum,_London" title="Natural History Museum, London">Natural History Museum</a> and the <a href="/wiki/Oxford_University_Museum_of_Natural_History" title="Oxford University Museum of Natural History">Oxford University Museum of Natural History</a>, measuring 5 metres (16 ft) and 4.7 metres (15 ft), respectively.<a href="#cite_note-Wood-45">[44]</a> The average size of sperm whales has decreased over the years, probably due to pressure from whaling.<a href="#cite_note-McClain-36">[35]</a> Another view holds that exploitation by overwhaling had virtually no effect on the size of the bull sperm whales, and their size may have actually increased in current times on the basis of density dependent effects.<a href="#cite_note-48">[47]</a> Old males taken at <a href="/wiki/Solander_Islands" title="Solander Islands">Solander Islands</a> were recorded to be extremely large and unusually rich in blubbers.<a href="#cite_note-49">[48]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_blowhole_Vincze.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Sperm_whale_blowhole_Vincze.jpg/220px-Sperm_whale_blowhole_Vincze.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Sperm_whale_blowhole_Vincze.jpg/330px-Sperm_whale_blowhole_Vincze.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Sperm_whale_blowhole_Vincze.jpg/440px-Sperm_whale_blowhole_Vincze.jpg 2x" data-file-width="2048" data-file-height="1152" /></a><figcaption>Unusual among <a href="/wiki/Cetaceans" class="mw-redirect" title="Cetaceans">cetaceans</a>, the sperm whale's blowhole is highly skewed to the left side of the head.</figcaption></figure> The sperm whale's unique body is unlikely to be confused with any other species. The sperm whale's distinctive shape comes from its very large, block-shaped head, which can be one-quarter to one-third of the animal's length. The S-shaped <a href="/wiki/Blowhole_(biology)" class="mw-redirect" title="Blowhole (biology)">blowhole</a> is located very close to the front of the head and shifted to the whale's left.<a href="#cite_note-encyc-37">[36]</a> This gives rise to a distinctive bushy, forward-angled spray.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The sperm whale's <a href="https://en.wiktionary.org/wiki/fluke#Noun_3" class="extiw" title="wikt:fluke">flukes</a> (tail lobes) are triangular and very thick. Proportionally, they are larger than that of any other cetacean, and are very flexible.<a href="#cite_note-50">[49]</a> The whale lifts its flukes high out of the water as it begins a feeding dive.<a href="#cite_note-encyc-37">[36]</a> It has a series of ridges on the back's caudal third instead of a <a href="/wiki/Dorsal_fin" title="Dorsal fin">dorsal fin</a>. The largest ridge was called the 'hump' by whalers, and can be mistaken for a dorsal fin because of its shape and size.<a href="#cite_note-princeton-12">[11]</a> In contrast to the smooth skin of most large whales, its back skin is usually wrinkly and has been likened to a <a href="/wiki/Prune_(fruit)" class="mw-redirect" title="Prune (fruit)">prune</a> by whale-watching enthusiasts.<a href="#cite_note-prune-51">[50]</a> <a href="/wiki/Albino" class="mw-redirect" title="Albino">Albinos</a> have been reported.<a href="#cite_note-audubon-13">[12]</a><a href="#cite_note-52">[51]</a> <div class="mw-heading mw-heading3"><h3 id="Skeleton">Skeleton</h3></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Physeter_macrocephalus_-_skeleton.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Physeter_macrocephalus_-_skeleton.jpg/500px-Physeter_macrocephalus_-_skeleton.jpg" decoding="async" width="500" height="111" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Physeter_macrocephalus_-_skeleton.jpg/750px-Physeter_macrocephalus_-_skeleton.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Physeter_macrocephalus_-_skeleton.jpg/1000px-Physeter_macrocephalus_-_skeleton.jpg 2x" data-file-width="9606" data-file-height="2136" /></a><figcaption>A sperm whale skeleton</figcaption></figure> The ribs are bound to the spine by flexible cartilage, which allows the ribcage to collapse rather than snap under high pressure.<a href="#cite_note-53">[52]</a> While sperm whales are well adapted to diving, repeated dives to great depths have long-term effects. Bones show the same <a href="/wiki/Avascular_necrosis" title="Avascular necrosis">avascular necrosis</a> that signals <a href="/wiki/Decompression_sickness" title="Decompression sickness">decompression sickness</a> in humans. Older skeletons showed the most extensive damage, whereas calves showed no damage. This damage may indicate that sperm whales are susceptible to decompression sickness, and sudden surfacing could be lethal to them.<a href="#cite_note-bends-54">[53]</a> Like that of all cetaceans, the spine of the sperm whale has reduced <a href="/wiki/Zygapophysial_joint" class="mw-redirect" title="Zygapophysial joint">zygapophysial joints</a>, of which the remnants are modified and are positioned higher on the vertebral dorsal spinous process, hugging it laterally, to prevent extensive lateral bending and facilitate more dorso-ventral bending. These evolutionary modifications make the spine more flexible but weaker than the spines of terrestrial vertebrates.<a href="#cite_note-55">[54]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_skeleton_labelled.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Sperm_whale_skeleton_labelled.jpg/220px-Sperm_whale_skeleton_labelled.jpg" decoding="async" width="220" height="59" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Sperm_whale_skeleton_labelled.jpg/330px-Sperm_whale_skeleton_labelled.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Sperm_whale_skeleton_labelled.jpg/440px-Sperm_whale_skeleton_labelled.jpg 2x" data-file-width="1700" data-file-height="457" /></a><figcaption>Labeled sperm whale skeleton</figcaption></figure> Like many cetaceans, the sperm whale has a vestigial pelvis that is not connected to the spine.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Like that of other <a href="/wiki/Toothed_whale" title="Toothed whale">toothed whales</a>, the skull of the sperm whale is asymmetrical so as to aid <a href="/wiki/Animal_echolocation" title="Animal echolocation">echolocation</a>. Sound waves that strike the whale from different directions will not be channeled in the same way.<a href="#cite_note-56">[55]</a> Within the basin of the cranium, the openings of the bony narial tubes (from which the nasal passages spring) are skewed towards the left side of the skull.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] <div class="mw-heading mw-heading3"><h3 id="Jaws_and_teeth">Jaws and teeth </h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_tooth.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Sperm_whale_tooth.jpg/220px-Sperm_whale_tooth.jpg" decoding="async" width="220" height="293" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Sperm_whale_tooth.jpg/330px-Sperm_whale_tooth.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Sperm_whale_tooth.jpg/440px-Sperm_whale_tooth.jpg 2x" data-file-width="3024" data-file-height="4032" /></a><figcaption>Sperm whale tooth</figcaption></figure> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Dirk_Claesen_-_Sperm_Whale.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Dirk_Claesen_-_Sperm_Whale.jpg/220px-Dirk_Claesen_-_Sperm_Whale.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Dirk_Claesen_-_Sperm_Whale.jpg/330px-Dirk_Claesen_-_Sperm_Whale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Dirk_Claesen_-_Sperm_Whale.jpg/440px-Dirk_Claesen_-_Sperm_Whale.jpg 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>The lower jaw is long and narrow. The teeth fit into sockets along the upper jaw. (lifelike sculpture)</figcaption></figure> The sperm whale's lower jaw is very narrow and underslung.<a href="#cite_note-Jefferson-57">[56]</a> The sperm whale has 18 to 26 teeth on each side of its lower jaw which fit into sockets in the upper jaw.<a href="#cite_note-Jefferson-57">[56]</a> The teeth are cone-shaped and weigh up to 1 kilogram (2.2 lb) each.<a href="#cite_note-58">[57]</a> The teeth are functional, but do not appear to be necessary for capturing or eating squid, as well-fed animals have been found without teeth or even with deformed jaws. One hypothesis is that the teeth are used in aggression between males.<a href="#cite_note-59">[58]</a> Mature males often show scars which seem to be caused by the teeth[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]. Rudimentary teeth are also present in the upper jaw, but these rarely emerge into the mouth.<a href="#cite_note-60">[59]</a> Analyzing the teeth is the preferred method for determining a whale's age. Like the age-rings in a tree, the teeth build distinct layers of <a href="/wiki/Cementum" title="Cementum">cementum</a> and <a href="/wiki/Dentine" class="mw-redirect" title="Dentine">dentine</a> as they grow.<a href="#cite_note-61">[60]</a> <div class="mw-heading mw-heading3"><h3 id="Brain">Brain</h3></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Preserved_sperm_whale_brain.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Preserved_sperm_whale_brain.jpg/220px-Preserved_sperm_whale_brain.jpg" decoding="async" width="220" height="158" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Preserved_sperm_whale_brain.jpg/330px-Preserved_sperm_whale_brain.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Preserved_sperm_whale_brain.jpg/440px-Preserved_sperm_whale_brain.jpg 2x" data-file-width="810" data-file-height="580" /></a><figcaption>The sperm whale's brain is the largest in the world, five times heavier than a human brain.</figcaption></figure> The sperm whale <a href="/wiki/Brain" title="Brain">brain</a> is the <a href="/wiki/Largest_body_part" title="Largest body part">largest</a> known of any modern or extinct animal, weighing on average about 7.8 kilograms (17 lb)<a href="#cite_note-62">[61]</a><a href="#cite_note-brain-63">[62]</a> (with the smallest known weighing 6.4 kilograms (14 lb) and the largest known weighing 9.2 kilograms (20 lb)),<a href="#cite_note-Wood-45">[44]</a><a href="#cite_note-Carwardine-46">[45]</a> more than five times heavier than a <a href="/wiki/Human_brain" title="Human brain">human brain</a>, and has a volume of about 8,000 cm3.<a href="#cite_note-64">[63]</a> Although larger brains generally correlate with higher intelligence, it is not the only factor. Elephants and dolphins also have larger brains than humans.<a href="#cite_note-Whitehead323-65">[64]</a> The sperm whale has a lower <a href="/wiki/Encephalization_quotient" title="Encephalization quotient">encephalization quotient</a> than many other whale and <a href="/wiki/Dolphin" title="Dolphin">dolphin</a> species, lower than that of non-human <a href="/wiki/Anthropoid_ape" class="mw-redirect" title="Anthropoid ape">anthropoid apes</a>, and much lower than that of humans.<a href="#cite_note-brain-63">[62]</a><a href="#cite_note-66">[65]</a> The sperm whale's <a href="/wiki/Cerebrum" title="Cerebrum">cerebrum</a> is the largest in all mammalia, both in absolute and relative terms. The <a href="/wiki/Olfactory_system" title="Olfactory system">olfactory system</a> is reduced, suggesting that the sperm whale has a poor sense of taste and smell. By contrast, the auditory system is enlarged. The <a href="/wiki/Pyramidal_tracts" title="Pyramidal tracts">pyramidal tract</a> is poorly developed, reflecting the reduction of its limbs.<a href="#cite_note-OelschlagerKemp1999-67">[66]</a> <div class="mw-heading mw-heading3"><h3 id="Biological_systems">Biological systems</h3></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/Physiology_of_underwater_diving#Marine_mammals" title="Physiology of underwater diving">Physiology of underwater diving § Marine mammals</a></div> The sperm whale respiratory system has adapted to cope with drastic pressure changes when diving. The flexible <a href="/wiki/Ribcage" class="mw-redirect" title="Ribcage">ribcage</a> allows lung collapse, reducing <a href="/wiki/Nitrogen" title="Nitrogen">nitrogen</a> intake, and <a href="/wiki/Metabolism" title="Metabolism">metabolism</a> can decrease to conserve <a href="/wiki/Oxygen" title="Oxygen">oxygen</a>.<a href="#cite_note-68">[67]</a><a href="#cite_note-69">[68]</a> Between dives, the sperm whale surfaces to breathe for about eight minutes before diving again.<a href="#cite_note-encyc-37">[36]</a> <a href="/wiki/Odontoceti" class="mw-redirect" title="Odontoceti">Odontoceti</a> (toothed whales) breathe air at the surface through a single, S-shaped blowhole, which is extremely skewed to the left. Sperm whales spout (breathe) 3–5 times per minute at rest, increasing to 6–7 times per minute after a dive. The blow is a noisy, single stream that rises up to 2 metres (6.6 ft) or more above the surface and points forward and left at a 45° angle.<a href="#cite_note-70">[69]</a> On average, females and juveniles blow every 12.5 seconds before dives, while large males blow every 17.5 seconds before dives.<a href="#cite_note-whiteheadforaging-71">[70]</a> A sperm whale killed 160 km (100 mi) south of Durban, South Africa, after a 1-hour, 50-minute dive was found with two dogfish (<a href="/wiki/Scymnodon" title="Scymnodon">Scymnodon</a> sp.), usually found at the <a href="/wiki/Seabed" title="Seabed">sea floor</a>, in its belly.<a href="#cite_note-72">[71]</a> The sperm whale has the longest intestinal system in the world,<a href="#cite_note-73">[72]</a> exceeding 300 m in larger specimens.<a href="#cite_note-chip.choate.edu-74">[73]</a><a href="#cite_note-75">[74]</a> The sperm whale has a four-chambered stomach that is similar to <a href="/wiki/Ruminant" title="Ruminant">ruminants</a>. The first secretes no gastric juices and has very thick muscular walls to crush the food (since whales cannot chew) and resist the claw and sucker attacks of swallowed squid. The second chamber is larger and is where digestion takes place. Undigested squid beaks accumulate in the second chamber – as many as 18,000 have been found in some dissected specimens.<a href="#cite_note-chip.choate.edu-74">[73]</a><a href="#cite_note-76">[75]</a><a href="#cite_note-youtube1-77">[76]</a> Most squid beaks are vomited by the whale, but some occasionally make it to the hindgut. Such beaks precipitate the formation of <a href="/wiki/Ambergris" title="Ambergris">ambergris</a>.<a href="#cite_note-youtube1-77">[76]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_fetus_arterial_system.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Sperm_whale_fetus_arterial_system.svg/220px-Sperm_whale_fetus_arterial_system.svg.png" decoding="async" width="220" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Sperm_whale_fetus_arterial_system.svg/330px-Sperm_whale_fetus_arterial_system.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Sperm_whale_fetus_arterial_system.svg/440px-Sperm_whale_fetus_arterial_system.svg.png 2x" data-file-width="1711" data-file-height="387" /></a><figcaption>The arterial system of a sperm whale foetus</figcaption></figure> In 1959, the heart of a 22 metric-ton (24 short-ton) male taken by whalers was measured to be 116 kilograms (256 lb), about 0.5% of its total mass.<a href="#cite_note-78">[77]</a> The circulatory system has a number of specific adaptations for the aquatic environment. The diameter of the <a href="/wiki/Aortic_arch" title="Aortic arch">aortic arch</a> increases as it leaves the heart. This bulbous expansion acts as a <a href="/wiki/Windkessel_effect" title="Windkessel effect">windkessel</a>, ensuring a steady blood flow as the heart rate slows during diving.<a href="#cite_note-79">[78]</a> The arteries that leave the aortic arch are positioned symmetrically. There is no <a href="/wiki/Costocervical_artery" class="mw-redirect" title="Costocervical artery">costocervical artery</a>. There is no direct connection between the internal carotid artery and the vessels of the brain.<a href="#cite_note-pmid9329202-80">[79]</a> Their circulatory system has adapted to dive at great depths, as much as 2,250 metres (7,382 ft)<a href="#cite_note-plosone-2014-7">[6]</a><a href="#cite_note-Elephantseal-8">[7]</a><a href="#cite_note-NatGeoDeepest-81">[80]</a><a href="#cite_note-82">[81]</a><a href="#cite_note-83">[82]</a>[<a href="/wiki/Wikipedia:Citing_sources#Bundling_citations" title="Wikipedia:Citing sources">excessive citations</a>] for up to 120 minutes.<a href="#cite_note-84">[83]</a> More typical dives are around 400 metres (1,310 ft) and 35 minutes in duration.<a href="#cite_note-encyc-37">[36]</a> <a href="/wiki/Myoglobin" title="Myoglobin">Myoglobin</a>, which stores oxygen in muscle tissue, is much more abundant than in terrestrial animals.<a href="#cite_note-85">[84]</a> The <a href="/wiki/Blood" title="Blood">blood</a> has a high density of <a href="/wiki/Red_blood_cell" title="Red blood cell">red blood cells</a>, which contain oxygen-carrying <a href="/wiki/Haemoglobin" class="mw-redirect" title="Haemoglobin">haemoglobin</a>. The oxygenated blood can be directed towards only the brain and other essential organs when oxygen levels deplete.<a href="#cite_note-86">[85]</a><a href="#cite_note-aquarium-87">[86]</a><a href="#cite_note-88">[87]</a> The <a href="/wiki/Spermaceti_organ" title="Spermaceti organ">spermaceti organ</a> may also play a role by adjusting <a href="/wiki/Buoyancy" title="Buoyancy">buoyancy</a> (see <a href="#Spermaceti_organ_and_melon">below</a>).<a href="#cite_note-clarke-89">[88]</a> The arterial <a href="/wiki/Retia_mirabilia" class="mw-redirect" title="Retia mirabilia">retia mirabilia</a> are extraordinarily well-developed. The complex arterial retia mirabilia of the sperm whale are more extensive and larger than those of any other cetacean.<a href="#cite_note-pmid9329202-80">[79]</a> <div class="mw-heading mw-heading3"><h3 id="Senses">Senses</h3></div> <div class="mw-heading mw-heading4"><h4 id="Spermaceti_organ_and_melon">Spermaceti organ and melon</h4></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_head_anatomy_(transverse_%2B_sagittal).svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg/220px-Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg.png" decoding="async" width="220" height="79" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg/330px-Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg/440px-Sperm_whale_head_anatomy_%28transverse_%2B_sagittal%29.svg.png 2x" data-file-width="2173" data-file-height="781" /></a><figcaption>Anatomy of the sperm whale's head. The organs above the jaw are devoted to sound generation.</figcaption></figure> Atop the whale's skull is positioned a large complex of organs filled with a liquid mixture of fats and waxes called <a href="/wiki/Spermaceti" title="Spermaceti">spermaceti</a>. The purpose of this complex is to generate powerful and focused clicking sounds, the existence of which was proven by <a href="/wiki/Val_Worthington" title="Val Worthington">Valentine Worthington</a> and William Schevill when a recording was produced on a research vessel in May 1959.<a href="#cite_note-Worthington-1957-90">[89]</a> The sperm whale uses these sounds for <a href="/wiki/Animal_echolocation" title="Animal echolocation">echolocation</a> and communication.<a href="#cite_note-Cranford2000ImpulseSoundSources-91">[90]</a><a href="#cite_note-Norris,_K.S._&_Harvey,_G.W._1972_397–417-92">[91]</a><a href="#cite_note-Cranford,_T.W._1999_1133–1157-93">[92]</a><a href="#cite_note-Madsen,_P.T.,_Payne,_R.,_Kristiansen,_N.U.,_Wahlberg,_M.,_Kerr,_I._&_Møhl,_B._2002_1899–1906-94">[93]</a><a href="#cite_note-Møhl,_B.,_Wahlberg,_M.,_Madsen,_P.T.,_Miller,_L.A._&_Surlykke,_A._2000_638–648-95">[94]</a><a href="#cite_note-Møhl,_B.,_Wahlberg,_M.,_Madsen,_P.T.,_Heerfordt,_A._&_Lund,_A._2003_1143–1154-96">[95]</a><a href="#cite_note-Whitehead,_H._2003_277–279-97">[96]</a><a href="#cite_note-98">[97]</a>[<a href="/wiki/Wikipedia:Citing_sources#Bundling_citations" title="Wikipedia:Citing sources">excessive citations</a>] The spermaceti organ is like a large barrel of spermaceti. Its surrounding wall, known as the case, is extremely tough and fibrous. The case can hold within it up to 1,900 <a href="/wiki/Litre" title="Litre">litres</a> of spermaceti.<a href="#cite_note-99">[98]</a> It is proportionately larger in males.<a href="#cite_note-Whitehead321-100">[99]</a> This oil is a mixture of <a href="/wiki/Triglyceride" title="Triglyceride">triglycerides</a> and <a href="/wiki/Wax_ester" title="Wax ester">wax esters</a>. It has been suggested that it is homologous to the dorsal bursa organ found in dolphins. <a href="#cite_note-n010-101">[100]</a> The proportion of wax esters in the spermaceti organ increases with the age of the whale: 38–51% in calves, 58–87% in adult females, and 71–94% in adult males.<a href="#cite_note-EncyclopediaMarineMammals1164-102">[101]</a> The spermaceti at the core of the organ has a higher wax content than the outer areas.<a href="#cite_note-103">[102]</a> The speed of sound in spermaceti is 2,684 m/s (at 40 kHz, 36 °C), making it nearly twice as fast as in the oil in a dolphin's <a href="/wiki/Melon_(whale)" class="mw-redirect" title="Melon (whale)">melon</a>.<a href="#cite_note-NorrisHarvey1972-104">[103]</a> Below the spermaceti organ lies the "junk" which consists of compartments of spermaceti separated by cartilage. It is analogous to the <a href="/wiki/Melon_(whale)" class="mw-redirect" title="Melon (whale)">melon</a> found in other toothed whales.<a href="#cite_note-Carrier-105">[104]</a> The structure of the junk redistributes physical stress across the skull and may have evolved to protect the head during ramming.<a href="#cite_note-106">[105]</a><a href="#cite_note-107">[106]</a><a href="#cite_note-Carrier-105">[104]</a> Running through the head are two air passages. The left passage runs alongside the spermaceti organ and goes directly to the blowhole, whilst the right passage runs underneath the spermaceti organ and passes air through a pair of phonic lips and into the distal sac at the very front of the nose. The distal sac is connected to the blowhole and the terminus of the left passage. When the whale is submerged, it can close the blowhole, and air that passes through the phonic lips can circulate back to the lungs. The sperm whale, unlike other odontocetes, has only one pair of phonic lips, whereas all other toothed whales have two,<a href="#cite_note-Cranfordetal996-108">[107]</a> and it is located at the front of the nose instead of behind the melon. At the posterior end of this spermaceti complex is the frontal sac, which covers the concave surface of the cranium. The posterior wall of the frontal sac is covered with fluid-filled knobs, which are about 4–13 mm in diameter and separated by narrow grooves. The anterior wall is smooth. The knobbly surface reflects sound waves that come through the spermaceti organ from the phonic lips. The grooves between the knobs trap a film of air that is consistent whatever the orientation or depth of the whale, making it an excellent <a href="/wiki/Acoustic_mirror" title="Acoustic mirror">sound mirror</a>.<a href="#cite_note-NorrisHarvey1972-104">[103]</a> The spermaceti organs may also help adjust the whale's <a href="/wiki/Buoyancy" title="Buoyancy">buoyancy</a>. It is hypothesized that before the whale dives, cold water enters the organ, and it is likely that the blood vessels constrict, reducing blood flow, and, hence, temperature. The wax therefore solidifies and reduces in volume.<a href="#cite_note-clarke-89">[88]</a><a href="#cite_note-clarke2-109">[108]</a> The increase in <a href="/wiki/Specific_density" class="mw-redirect" title="Specific density">specific density</a> generates a down force of about 392 newtons (88 lbf) and allows the whale to dive with less effort.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] During the hunt, oxygen consumption, together with blood vessel dilation, produces heat and melts the spermaceti, increasing its buoyancy and enabling easy surfacing.<a href="#cite_note-110">[109]</a> However, more recent work<a href="#cite_note-Cranford,_T.W._1999_1133–1157-93">[92]</a> has found many problems with this theory including the lack of anatomical structures for the actual heat exchange.<a href="#cite_note-111">[110]</a> Another issue is that if the spermaceti does indeed cool and solidify, it would affect the whale's echolocation ability just when it needs it to hunt in the depths.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] <a href="/wiki/Herman_Melville" title="Herman Melville">Herman Melville</a>'s fictional story <a href="/wiki/Moby-Dick" title="Moby-Dick">Moby-Dick</a> suggests that the "case" containing the spermaceti serves as a battering ram for use in fights between males.<a href="#cite_note-battering-112">[111]</a> A few famous instances include the well-documented sinking of the ships <a href="/wiki/Essex_(whaleship)" title="Essex (whaleship)">Essex</a> and <a href="/wiki/Ann_Alexander_(ship)" title="Ann Alexander (ship)">Ann Alexander</a> by attackers estimated to weigh only one-fifth as much as the ships.<a href="#cite_note-Carrier-105">[104]</a> <div style="clear:both;" class=""></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Sperm_whale_phonic_lips_(NASA).jpg" class="mw-file-description" title="The phonic lips."><img alt="The phonic lips." src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Sperm_whale_phonic_lips_%28NASA%29.jpg/120px-Sperm_whale_phonic_lips_%28NASA%29.jpg" decoding="async" width="120" height="98" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Sperm_whale_phonic_lips_%28NASA%29.jpg/180px-Sperm_whale_phonic_lips_%28NASA%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Sperm_whale_phonic_lips_%28NASA%29.jpg/240px-Sperm_whale_phonic_lips_%28NASA%29.jpg 2x" data-file-width="889" data-file-height="726" /></a></div> <div class="gallerytext">The phonic lips.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Sperm_whale_exposed_frontal_sac.jpg" class="mw-file-description" title="The frontal sac, exposed. Its surface is covered with fluid-filled knobs."><img alt="The frontal sac, exposed. Its surface is covered with fluid-filled knobs." src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Sperm_whale_exposed_frontal_sac.jpg/120px-Sperm_whale_exposed_frontal_sac.jpg" decoding="async" width="120" height="92" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Sperm_whale_exposed_frontal_sac.jpg/180px-Sperm_whale_exposed_frontal_sac.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Sperm_whale_exposed_frontal_sac.jpg/240px-Sperm_whale_exposed_frontal_sac.jpg 2x" data-file-width="905" data-file-height="693" /></a></div> <div class="gallerytext">The frontal sac, exposed. Its surface is covered with fluid-filled knobs.</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><a href="/wiki/File:Sperm_whale_frontal_sac_surface_close-up.jpg" class="mw-file-description" title="A piece of the posterior wall of the frontal sac. The grooves between the knobs trap a consistent film of air, making it an excellent sound mirror.[103]"><img alt="A piece of the posterior wall of the frontal sac. The grooves between the knobs trap a consistent film of air, making it an excellent sound mirror.[103]" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_frontal_sac_surface_close-up.jpg/101px-Sperm_whale_frontal_sac_surface_close-up.jpg" decoding="async" width="101" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_frontal_sac_surface_close-up.jpg/152px-Sperm_whale_frontal_sac_surface_close-up.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sperm_whale_frontal_sac_surface_close-up.jpg/203px-Sperm_whale_frontal_sac_surface_close-up.jpg 2x" data-file-width="609" data-file-height="721" /></a></div> <div class="gallerytext">A piece of the posterior wall of the frontal sac. The grooves between the knobs trap a consistent film of air, making it an excellent <a href="/wiki/Acoustic_mirror" title="Acoustic mirror">sound mirror</a>.<a href="#cite_note-NorrisHarvey1972-104">[103]</a></div> </li> </ul> <div class="mw-heading mw-heading4"><h4 id="Eyes_and_vision">Eyes and vision</h4></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/7/75/Sperm_whale_eye_retraction.ogv/220px--Sperm_whale_eye_retraction.ogv.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" height="124" data-durationhint="4" data-mwtitle="Sperm_whale_eye_retraction.ogv" data-mwprovider="wikimediacommons" resource="/wiki/File:Sperm_whale_eye_retraction.ogv"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/7/75/Sperm_whale_eye_retraction.ogv/Sperm_whale_eye_retraction.ogv.480p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="480p.vp9.webm" data-width="854" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/7/75/Sperm_whale_eye_retraction.ogv/Sperm_whale_eye_retraction.ogv.720p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="720p.vp9.webm" data-width="1280" data-height="720" /><source src="//upload.wikimedia.org/wikipedia/commons/7/75/Sperm_whale_eye_retraction.ogv" type="video/ogg; codecs="theora, vorbis"" data-width="1280" data-height="720" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/7/75/Sperm_whale_eye_retraction.ogv/Sperm_whale_eye_retraction.ogv.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="426" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/7/75/Sperm_whale_eye_retraction.ogv/Sperm_whale_eye_retraction.ogv.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="640" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/7/75/Sperm_whale_eye_retraction.ogv/Sperm_whale_eye_retraction.ogv.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="640" data-height="360" /></video><figcaption>Like other toothed whales, the sperm whale can retract its eyes.</figcaption></figure> The sperm whale's eye does not differ greatly from those of other <a href="/wiki/Toothed_whale" title="Toothed whale">toothed whales</a> except in size. It is the largest among the toothed whales, weighing about 170 g. It is overall ellipsoid in shape, compressed along the visual axis, measuring about 7×7×3 cm. The <a href="/wiki/Cornea" title="Cornea">cornea</a> is elliptical and the lens is spherical. The <a href="/wiki/Sclera" title="Sclera">sclera</a> is very hard and thick, roughly 1 cm anteriorly and 3 cm posteriorly. There are no <a href="/wiki/Ciliary_muscle" title="Ciliary muscle">ciliary muscles</a>. The <a href="/wiki/Choroid" title="Choroid">choroid</a> is very thick and contains a fibrous <a href="/wiki/Tapetum_lucidum" title="Tapetum lucidum">tapetum lucidum</a>. Like other toothed whales, the sperm whale can retract and protrude its eyes, thanks to a 2-cm-thick retractor muscle attached around the eye at the equator,<a href="#cite_note-Bjerager2003-113">[112]</a> but are unable to roll the eyes in their sockets.<a href="#cite_note-114">[113]</a> According to Fristrup and Harbison (2002),<a href="#cite_note-FristrupHarbison2002-115">[114]</a> sperm whale's eyes afford good vision and sensitivity to light. They conjectured that sperm whales use vision to hunt squid, either by detecting silhouettes from below or by detecting bioluminescence. If sperm whales detect silhouettes, Fristrup and Harbison suggested that they hunt upside down, allowing them to use the forward parts of the ventral <a href="/wiki/Visual_field" title="Visual field">visual fields</a> for <a href="/wiki/Binocular_vision" title="Binocular vision">binocular vision</a>.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] <div class="mw-heading mw-heading3"><h3 id="Sleeping">Sleeping</h3></div> For some time researchers have been aware that pods of sperm whales may sleep for short periods, assuming a vertical position with their heads just below or at the surface, or head down.<a href="#cite_note-116">[115]</a> A 2008 study published in <a href="/wiki/Current_Biology" title="Current Biology">Current Biology</a> recorded evidence that whales may sleep with both sides of the brain. It appears that some whales may fall into a deep sleep for about 7 percent of the time, most often between 6 p.m. and midnight.<a href="#cite_note-117">[116]</a> <div class="mw-heading mw-heading3"><h3 id="Genetics">Genetics</h3></div> Sperm whales have 21 pairs of chromosomes (<a href="/wiki/Karyotype" title="Karyotype">2n=42</a>).<a href="#cite_note-Arnason1981-118">[117]</a> The genome of live whales can be examined by recovering shed skin.<a href="#cite_note-119">[118]</a> <div class="mw-heading mw-heading2"><h2 id="Vocalization_complex">Vocalization complex</h2></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information on the sonar operator slang term: <a href="/wiki/Carpenter_fish" title="Carpenter fish">Carpenter fish</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><audio id="mwe_player_1" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="105" data-mwtitle="Sperm_Whale_Rapid_Clicks_and_Coda.ogg" data-mwprovider="wikimediacommons" resource="/wiki/File:Sperm_Whale_Rapid_Clicks_and_Coda.ogg"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/dd/Sperm_Whale_Rapid_Clicks_and_Coda.ogg/Sperm_Whale_Rapid_Clicks_and_Coda.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/d/dd/Sperm_Whale_Rapid_Clicks_and_Coda.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /></audio><figcaption>Sperm whale vocalization</figcaption></figure> After <a href="/wiki/Val_Worthington" title="Val Worthington">Valentine Worthington</a> and <a href="/wiki/William_E._Schevill" title="William E. Schevill">William E. Schevill</a> confirmed the existence of sperm whale vocalization,<a href="#cite_note-Worthington-1957-90">[89]</a> further studies found that sperm whales are capable of emitting sounds at a source level of 230 <a href="/wiki/Decibel" title="Decibel">decibels</a> – making the sperm whale the loudest animal in the world.<a href="#cite_note-120">[119]</a> <div class="mw-heading mw-heading3"><h3 id="Mechanism">Mechanism</h3></div> When <a href="/wiki/Animal_echolocation" title="Animal echolocation">echolocating</a>, the sperm whale emits a directionally focused beam of broadband clicks. Clicks are generated by forcing air through a pair of phonic lips (also known as "monkey lips" or "museau de singe") at the front end of the nose, just below the blowhole.<a href="#cite_note-MuseauSinge-121">[120]</a> The sound then travels backwards along the length of the nose through the spermaceti organ. Most of the sound energy is then reflected off the frontal sac at the cranium and into the melon, whose lens-like structure focuses it.<a href="#cite_note-Cranford2000ImpulseSoundSources-91">[90]</a> Some of the sound will reflect back into the spermaceti organ and back towards the front of the whale's nose, where it will be reflected through the spermaceti organ a third time. This back and forth reflection which happens on the scale of a few milliseconds creates a multi-pulse click structure.<a href="#cite_note-122">[121]</a> This multi-pulse click structure allows researchers to measure the whale's spermaceti organ using only the sound of its clicks.<a href="#cite_note-123">[122]</a><a href="#cite_note-JCDG_Eval_1991-124">[123]</a> Because the interval between pulses of a sperm whale's click is related to the length of the sound producing organ, an individual whale's click is unique to that individual. However, if the whale matures and the size of the <a href="/wiki/Spermaceti" title="Spermaceti">spermaceti</a> organ increases, the tone of the whale's click will also change.<a href="#cite_note-JCDG_Eval_1991-124">[123]</a> The lower jaw is the primary reception path for the echoes. A continuous fat-filled canal transmits received sounds to the inner ear.<a href="#cite_note-echo-125">[124]</a> The source of the air forced through the phonic lips is the right nasal passage. While the left nasal passage opens to the blow hole, the right nasal passage has evolved to supply air to the phonic lips. It is thought that the nostrils of the land-based ancestor of the sperm whale migrated through evolution to their current functions, the left nostril becoming the blowhole and the right nostril becoming the phonic lips.<a href="#cite_note-tohora-126">[125]</a> Air that passes through the phonic lips passes into the distal sac, then back down through the left nasal passage. This recycling of air allows the whale to continuously generate clicks for as long as it is submerged.<a href="#cite_note-127">[126]</a> <div class="mw-heading mw-heading3"><h3 id="Vocalization_types">Vocalization types</h3></div> The sperm whale's vocalizations are all based on clicking, described in four types: the usual echolocation, creaks, codas, and slow clicks.<a href="#cite_note-Whitehead135-128">[127]</a> The usual echolocation click type is used in searching for prey.<a href="#cite_note-Whitehead135-128">[127]</a> A creak is a rapid series of high-frequency clicks that sounds somewhat like a creaky door hinge. It is typically used when homing in on prey.<a href="#cite_note-Whitehead135-128">[127]</a> Slow clicks are heard only in the presence of males (it is not certain whether females occasionally make them). Males make a lot of slow clicks in breeding grounds (74% of the time), both near the surface and at depth, which suggests they are primarily mating signals. Outside breeding grounds, slow clicks are rarely heard, and usually near the surface.<a href="#cite_note-Whitehead144-129">[128]</a> <table class="wikitable"> <caption>Characteristics of sperm whale clicks<a href="#cite_note-Whitehead135-128">[127]</a> </caption> <tbody><tr> <th>Click type </th> <th>Apparent source level (dB re 1 μPa m) </th> <th>Directionality </th> <th>Centroid frequency (kHz) </th> <th>Inter-click interval (s) </th> <th>Duration of click (ms) </th> <th>Duration of pulse (ms) </th> <th>Range audible to sperm whale (km) </th> <th>Inferred function </th> <th>Audio sample </th></tr> <tr> <th>Usual </th> <td>230</td> <td>High</td> <td>15</td> <td>0.5–1.0</td> <td>15–30</td> <td>0.1</td> <td>16</td> <td>Searching for prey</td> <td><audio id="mwe_player_2" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="59" data-mwtitle="Sperm_Whale_Ordinary_Clicks.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/c/ca/Sperm_Whale_Ordinary_Clicks.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/c/ca/Sperm_Whale_Ordinary_Clicks.ogg/Sperm_Whale_Ordinary_Clicks.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /></audio> </td></tr> <tr> <th>Creak </th> <td>205</td> <td>High</td> <td>15</td> <td>0.005–0.1</td> <td>0.1–5</td> <td>0.1</td> <td>6</td> <td>Homing in on prey</td> <td><audio id="mwe_player_3" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="12" data-mwtitle="Sperm_Whale_Creak_2.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/3/3c/Sperm_Whale_Creak_2.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/3/3c/Sperm_Whale_Creak_2.ogg/Sperm_Whale_Creak_2.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /></audio> </td></tr> <tr> <th>Coda </th> <td>180</td> <td>Low</td> <td>5</td> <td>0.1–0.5</td> <td>35</td> <td>0.5</td> <td>~2</td> <td>Social communication</td> <td><audio id="mwe_player_4" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="34" data-mwtitle="Cachalot_coda_exchange.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/e0/Cachalot_coda_exchange.ogg/Cachalot_coda_exchange.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/e/e0/Cachalot_coda_exchange.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /></audio> </td></tr> <tr> <th>Slow </th> <td>190</td> <td>Low</td> <td>0.5</td> <td>5–8</td> <td>30</td> <td>5</td> <td>60</td> <td>Communication by males</td> <td><audio id="mwe_player_5" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="36" data-mwtitle="Sperm_Whale_Slow_Clicks.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/e/e9/Sperm_Whale_Slow_Clicks.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/e/e9/Sperm_Whale_Slow_Clicks.ogg/Sperm_Whale_Slow_Clicks.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /></audio> </td></tr></tbody></table> <div class="mw-heading mw-heading4"><h4 id="Codas">Codas</h4></div> The most distinctive vocalizations are codas, which are short rhythmic sequences of clicks, mostly numbering 3–12 clicks, in stereotyped patterns.<a href="#cite_note-Whitehead-2024-130">[129]</a> They are classified using variations in the number of clicks, rhythm, and tempo.<a href="#cite_note-Hersh-2022-131">[130]</a> Codas are the result of <a href="/wiki/Vocal_learning" title="Vocal learning">vocal learning</a> within a stable social group,<a href="#cite_note-Gero-2016-132">[131]</a> and are made in the context of the whales' social unit.<a href="#cite_note-Whitehead-2024-130">[129]</a> "The foundation of sperm whale society is the matrilineally based social unit of ten or so females and their offspring. The members of the unit travel together, suckle each others' infants, and babysit them while mothers make long deep dives to feed."<a href="#cite_note-Whitehead-2024-130">[129]</a> Over 70% of a sperm whale's time is spent independently foraging; codas "could help whales reunite and reaffirm their social ties in between long foraging dives."<a href="#cite_note-Hersh-2022-131">[130]</a><a href="#cite_note-Safina-2020-pp16–19-133">[132]</a> While nonidentity codas are commonly used in multiple different clans,<a href="#cite_note-PNAS-20221205-134">[133]</a> some codas express clan identity, and denote different patterns of travel, foraging, and socializing or avoidance among clans.<a href="#cite_note-Safina-2020-pp16–19-133">[132]</a><a href="#cite_note-135">[134]</a> In particular, whales will not group with whales of another clan even though they share the same geographical area.<a href="#cite_note-Whitehead-2024-130">[129]</a> Statistically, as the clans' ranges become more overlapped, the distinction in clan identity coda usage becomes more pronounced.<a href="#cite_note-PNAS-20221205-134">[133]</a> Distinctive codas identify seven clans described among the approximately 150,000 female sperm whales in the Pacific Ocean, and there are another four clans in the Atlantic.<a href="#cite_note-Whitehead-2024-130">[129]</a> As "arbitrary traits that function as reliable indicators of cultural group membership," clan identity codas act as symbolic markers that modulate interactions between individuals.<a href="#cite_note-Hersh-2022-131">[130]</a> Individual identity in sperm whale vocalizations is an ongoing scientific issue, however. A distinction needs to be made between cues and signals. Human acoustic tools can distinguish individual whales by analyzing micro-characteristics of their vocalizations,<a href="#cite_note-Obaldía-2015-136">[135]</a> and the whales can probably do the same. This does not prove that the whales deliberately use some vocalizations to signal individual identity in the manner of the <a href="/wiki/Signature_whistle" title="Signature whistle">signature whistles</a> that bottlenose dolphins use as individual labels.<a href="#cite_note-Gero-2016-132">[131]</a><a href="#cite_note-Hersh-2022-131">[130]</a> <div class="mw-heading mw-heading2"><h2 id="Ecology">Ecology</h2></div> <div class="mw-heading mw-heading3"><h3 id="Distribution">Distribution</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_distribution_(Pacific_equirectangular).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/220px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/330px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b3/Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg/440px-Sperm_whale_distribution_%28Pacific_equirectangular%29.jpg 2x" data-file-width="1258" data-file-height="730" /></a><figcaption>Global concentrations of sperm whales</figcaption></figure> Sperm whales are among the most <a href="/wiki/Cosmopolitan_species" class="mw-redirect" title="Cosmopolitan species">cosmopolitan species</a>. They prefer ice-free waters over 1,000 metres (3,300 ft) deep.<a href="#cite_note-iucn-3">[3]</a> Although both sexes range through temperate and tropical oceans and seas, only adult males populate higher <a href="/wiki/Latitude" title="Latitude">latitudes</a>.<a href="#cite_note-audubon-13">[12]</a> Among several regions, such as along coastal waters of southern <a href="/wiki/Australia" title="Australia">Australia</a>, sperm whales have been considered to be locally extinct.<a href="#cite_note-137">[136]</a> They are relatively abundant from the poles to the equator and are found in all the oceans. They inhabit the <a href="/wiki/Mediterranean_Sea" title="Mediterranean Sea">Mediterranean Sea</a>, but not the <a href="/wiki/Black_Sea" title="Black Sea">Black Sea</a>,<a href="#cite_note-princeton-12">[11]</a> while their presence in the <a href="/wiki/Red_Sea" title="Red Sea">Red Sea</a> is uncertain.<a href="#cite_note-iucn-3">[3]</a> The shallow entrances to both the Black Sea and the Red Sea may account for their absence.<a href="#cite_note-138">[137]</a> The Black Sea's lower layers are also <a href="/wiki/Anoxic_waters" title="Anoxic waters">anoxic</a> and contain high concentrations of <a href="/wiki/Sulphur" class="mw-redirect" title="Sulphur">sulphur</a> compounds such as <a href="/wiki/Hydrogen_sulphide" class="mw-redirect" title="Hydrogen sulphide">hydrogen sulphide</a>.<a href="#cite_note-139">[138]</a> The first ever sighting off the coast of <a href="/wiki/Pakistan" title="Pakistan">Pakistan</a> was made in 2017.<a href="#cite_note-140">[139]</a><a href="#cite_note-141">[140]</a> The first ever record off the <a href="/wiki/Sinan_County,_South_Jeolla" title="Sinan County, South Jeolla">west coast</a> of the Korean Peninsula (<a href="/wiki/Yellow_Sea" title="Yellow Sea">Yellow Sea</a>) was made in 2005.<a href="#cite_note-142">[141]</a> followed by one near <a href="/wiki/Ganghwa_Island" title="Ganghwa Island">Ganghwa Island</a> in 2009.<a href="#cite_note-143">[142]</a> Populations are denser close to <a href="/wiki/Continental_shelf" title="Continental shelf">continental shelves</a> and canyons.<a href="#cite_note-audubon-13">[12]</a> Sperm whales are usually found in deep, off-shore waters, but may be seen closer to shore, in areas where the continental shelf is small and drops quickly to depths of 310 to 920 metres (1,020 to 3,020 ft).<a href="#cite_note-princeton-12">[11]</a> Coastal areas with significant sperm whale populations include the <a href="/wiki/Azores" title="Azores">Azores</a> and <a href="/wiki/Dominica" title="Dominica">Dominica</a>.<a href="#cite_note-whiteheadrange-144">[143]</a> In east Asian waters, whales are also observed regularly in coastal waters in places such as the <a href="/wiki/Commander_Islands" title="Commander Islands">Commander</a> and <a href="/wiki/Kuril_Islands" title="Kuril Islands">Kuril Islands</a>, <a href="/wiki/Shiretoko_Peninsula" title="Shiretoko Peninsula">Shiretoko Peninsula</a> which is one of few locations where sperm whales can be observed from shores,<a href="#cite_note-145">[144]</a> off <a href="/wiki/Kinkasan" title="Kinkasan">Kinkasan</a>, vicinity to <a href="/wiki/Tokyo_Bay" title="Tokyo Bay">Tokyo Bay</a><a href="#cite_note-146">[145]</a> and the <a href="/wiki/B%C5%8Ds%C5%8D_Peninsula" title="Bōsō Peninsula">Bōsō Peninsula</a> to the <a href="/wiki/Izu_Peninsula" title="Izu Peninsula">Izu</a><a href="#cite_note-147">[146]</a><a href="#cite_note-148">[147]</a> and the <a href="/wiki/Izu_Islands" title="Izu Islands">Izu Islands</a>, the <a href="/wiki/Volcano_Islands" title="Volcano Islands">Volcano Islands</a>, <a href="/wiki/Yakushima" title="Yakushima">Yakushima</a> and the <a href="/wiki/Tokara_Islands" title="Tokara Islands">Tokara Islands</a> to the <a href="/wiki/Ryukyu_Islands" title="Ryukyu Islands">Ryukyu Islands</a>,<a href="#cite_note-149">[148]</a><a href="#cite_note-150">[149]</a> <a href="/wiki/Taiwan" title="Taiwan">Taiwan</a>, the <a href="/wiki/Northern_Mariana_Islands" title="Northern Mariana Islands">Northern Mariana Islands</a>,<a href="#cite_note-151">[150]</a> and so forth. Historical catch records suggest there could have been smaller aggression grounds in the <a href="/wiki/Sea_of_Japan" title="Sea of Japan">Sea of Japan</a> as well.<a href="#cite_note-152">[151]</a> Along the <a href="/wiki/Korean_Peninsula" class="mw-redirect" title="Korean Peninsula">Korean Peninsula</a>, the first confirmed observation within the Sea of Japan, eight animals off <a href="/wiki/Guryongpo" title="Guryongpo">Guryongpo</a>, was made in 2004 since after the last catches of five whales off <a href="/wiki/Ulsan" title="Ulsan">Ulsan</a> in 1911,<a href="#cite_note-153">[152]</a> while nine whales were observed in the East China Sea side of the peninsula in 1999.<a href="#cite_note-EastSea-154">[153]</a> Grown males are known to enter surprisingly shallow bays to rest (whales will be in a state of rest during these occasions). Unique, coastal groups have been reported from various areas around the globe, such as near <a href="/wiki/Scotland" title="Scotland">Scotland</a>'s coastal waters,<a href="#cite_note-155">[154]</a> and the Shiretoko Peninsula, off Kaikōura, in <a href="/wiki/Davao_Gulf" title="Davao Gulf">Davao Gulf</a>. Such coastal groups were more abundant in pre-whaling days.<a href="#cite_note-156">[155]</a> Genetic analysis indicates that the world population of sperm whales originated in the Pacific Ocean from a population of about 10,000 animals around 100,000 years ago, when expanding ice caps blocked off their access to other seas. In particular, colonization of the Atlantic was revealed to have occurred multiple times during this expansion of their range.<a href="#cite_note-157">[156]</a> <div class="mw-heading mw-heading3"><h3 id="Diet">Diet</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG" class="mw-file-description"><img alt="Photo of whale skin with many overlapping circular indentations" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG/220px-A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG" decoding="async" width="220" height="240" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG/330px-A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG/440px-A_piece_of_sperm_whale_skin_with_Giant_Squid_sucker_scars.JPG 2x" data-file-width="1687" data-file-height="1844" /></a><figcaption>A piece of sperm whale skin with <a href="/wiki/Giant_squid" title="Giant squid">giant squid</a> sucker scars</figcaption></figure> Sperm whales usually dive between 300 and 800 metres (980 and 2,620 ft), and sometimes 1 to 2 kilometres (3,300 to 6,600 ft), in search of food.<a href="#cite_note-Whiteheaddive-158">[157]</a> Such dives can last more than an hour.<a href="#cite_note-Whiteheaddive-158">[157]</a> They feed on several species, notably the <a href="/wiki/Giant_squid" title="Giant squid">giant squid</a>, but also the <a href="/wiki/Colossal_squid" title="Colossal squid">colossal squid</a>, <a href="/wiki/Octopus" title="Octopus">octopuses</a>, and fish such as <a href="/wiki/Demersal_zone" title="Demersal zone">demersal</a> <a href="/wiki/Batoidea" class="mw-redirect" title="Batoidea">rays</a> and <a href="/wiki/Shark" title="Shark">sharks</a>,[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] but their diet is mainly medium-sized <a href="/wiki/Squid" title="Squid">squid</a>.<a href="#cite_note-whiteheadfeeding-159">[158]</a> Sperm whales may also possibly prey upon <a href="/wiki/Swordfish" title="Swordfish">swordfish</a> on rare occasions.<a href="#cite_note-160">[159]</a> Some prey may be taken accidentally while eating other items.<a href="#cite_note-whiteheadfeeding-159">[158]</a> Most of what is known about <a href="/wiki/Deep-sea" class="mw-redirect" title="Deep-sea">deep-sea</a> squid has been learned from specimens in captured sperm whale stomachs, although more recent studies analysed <a href="/wiki/Faeces" class="mw-redirect" title="Faeces">faeces</a>. One study, carried out around the <a href="/wiki/Gal%C3%A1pagos" class="mw-redirect" title="Galápagos">Galápagos</a>, found that squid from the genera <a href="/wiki/Histioteuthis" title="Histioteuthis">Histioteuthis</a> (62%), <a href="/wiki/Ancistrocheirus" title="Ancistrocheirus">Ancistrocheirus</a> (16%), and <a href="/wiki/Octopoteuthis" title="Octopoteuthis">Octopoteuthis</a> (7%) weighing between 12 and 650 grams (0.026 and 1.433 lb) were the most commonly taken.<a href="#cite_note-161">[160]</a> Battles between sperm whales and giant squid or colossal squid have never been observed by humans; however, white scars are believed to be caused by the large squid. One study published in 2010 collected evidence that suggests that female sperm whales may collaborate when hunting <a href="/wiki/Humboldt_squid" title="Humboldt squid">Humboldt squid</a>.<a href="#cite_note-162">[161]</a> Tagging studies have shown that sperm whales hunt upside down at the bottom of their deep dives. It is suggested that the whales can see the squid silhouetted above them against the dim surface light.<a href="#cite_note-163">[162]</a> An older study, examining whales captured by the New Zealand whaling fleet in the <a href="/wiki/Cook_Strait" title="Cook Strait">Cook Strait</a> region, found a 1.69:1 ratio of squid to fish by weight.<a href="#cite_note-164">[163]</a> Sperm whales sometimes take <a href="/wiki/Sablefish" title="Sablefish">sablefish</a> and <a href="/wiki/Toothfish" class="mw-redirect" title="Toothfish">toothfish</a> from long lines. <a href="/wiki/Long-line_fishing" class="mw-redirect" title="Long-line fishing">Long-line fishing</a> operations in the <a href="/wiki/Gulf_of_Alaska" title="Gulf of Alaska">Gulf of Alaska</a> complain that sperm whales take advantage of their fishing operations to eat desirable species straight off the line, sparing the whales the need to hunt.<a href="#cite_note-Sneaky_Cetaceans-165">[164]</a> However, the amount of fish taken is very little compared to what the sperm whale needs per day. Video footage has been captured of a large male sperm whale "bouncing" a long line, to gain the fish.<a href="#cite_note-166">[165]</a> Sperm whales are believed to prey on the <a href="/wiki/Megamouth_shark" title="Megamouth shark">megamouth shark</a>, a rare and large deep-sea species discovered in the 1970s.<a href="#cite_note-167">[166]</a> In one case, three sperm whales were observed attacking or playing with a megamouth.<a href="#cite_note-168">[167]</a> Sperm whales have also been noted to feed on bioluminescent <a href="/wiki/Pyrosome" title="Pyrosome">pyrosomes</a> such as <a href="/wiki/Pyrosoma_atlanticum" title="Pyrosoma atlanticum">Pyrosoma atlanticum</a>.<a href="#cite_note-169">[168]</a><a href="#cite_note-170">[169]</a><a href="#cite_note-chuaetal2019-171">[170]</a> It is thought that the foraging strategy of sperm whales for bioluminescent squids may also explain the presence of these light-emitting pyrosomes in the diet of the sperm whale.<a href="#cite_note-chuaetal2019-171">[170]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Ambergris.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Ambergris.jpg/220px-Ambergris.jpg" decoding="async" width="220" height="174" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Ambergris.jpg/330px-Ambergris.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Ambergris.jpg/440px-Ambergris.jpg 2x" data-file-width="1792" data-file-height="1418" /></a><figcaption><a href="/wiki/Ambergris" title="Ambergris">Ambergris</a></figcaption></figure> The sharp beak of a consumed squid lodged in the whale's intestine may lead to the production of <a href="/wiki/Ambergris" title="Ambergris">ambergris</a>, analogous to the production of <a href="/wiki/Pearl" title="Pearl">pearls</a> in oysters.<a href="#cite_note-172">[171]</a> The irritation of the intestines caused by squid beaks stimulates the secretion of this lubricant-like substance. Sperm whales are prodigious feeders and eat around 3% of their <a href="/wiki/Body_weight" class="mw-redirect" title="Body weight">body weight</a> per day. The total annual consumption of prey by sperm whales worldwide is estimated to be about 272 million tonnes (300 million short tons).<a href="#cite_note-173">[172]</a><a href="#cite_note-174">[173]</a> In comparison, human consumption of seafood is estimated to be 157 million tonnes (173 million short tons).<a href="#cite_note-FAO2022-175">[174]</a> Sperm whales hunt through <a href="/wiki/Animal_echolocation" title="Animal echolocation">echolocation</a>. Their clicks are among the most powerful sounds in the animal kingdom (<a href="#Vocalization_complex">see above</a>). It has been hypothesised that it can stun prey with its clicks. Experimental studies attempting to duplicate this effect have been unable to replicate the supposed injuries, casting doubt on this idea.<a href="#cite_note-176">[175]</a> One study showing that sound pressure levels on the squid are more than an order of magnitude below levels required for debilitation, and therefore, precluding acoustic stunning to facilitate prey capture.<a href="#cite_note-177">[176]</a> Sperm whales, as well as other large cetaceans, help fertilise the surface of the ocean by consuming nutrients in the depths and transporting those nutrients to the oceans' surface when they defecate, an effect known as the <a href="/wiki/Whale_pump" class="mw-redirect" title="Whale pump">whale pump</a>.<a href="#cite_note-178">[177]</a> This fertilises <a href="/wiki/Phytoplankton" title="Phytoplankton">phytoplankton</a> and other plants on the surface of the ocean and contributes to ocean productivity and the drawdown of atmospheric carbon.<a href="#cite_note-179">[178]</a> <div class="mw-heading mw-heading2"><h2 id="Life_cycle">Life cycle</h2></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/Whale_reproduction" class="mw-redirect" title="Whale reproduction">Whale reproduction</a></div> Sperm whales can live 70 years or more.<a href="#cite_note-princeton-12">[11]</a><a href="#cite_note-audubon-13">[12]</a><a href="#cite_note-Cetacean_Societies-14">[13]</a> They are a prime example of a species that has been <a href="/wiki/R/K_selection_theory" title="R/K selection theory">K-selected</a>, meaning their <a href="/wiki/Reproductive_strategy" class="mw-redirect" title="Reproductive strategy">reproductive strategy</a> is associated with stable environmental conditions and comprises a low birth rate, significant parental aid to offspring, slow maturation, and high longevity.<a href="#cite_note-encyc-37">[36]</a> How they choose mates has not been definitively determined. Bulls will fight with each other over females, and males will mate with multiple females, making them <a href="/wiki/Polygyny_in_animals" title="Polygyny in animals">polygynous</a>, but they do not dominate the group as in a harem.<a href="#cite_note-Whitehead276-180">[179]</a><a href="#cite_note-Ellis146-181">[180]</a> Bulls do not provide paternal care to their offspring but rather play a fatherly role to younger bulls to show dominance.<a href="#cite_note-Whitehead343-182">[181]</a> Females become fertile at around 9 years of age.<a href="#cite_note-Whitehead122-183">[182]</a> The oldest pregnant female ever recorded was 41 years old.<a href="#cite_note-Whitehead123-184">[183]</a> <a href="/wiki/Gestation" title="Gestation">Gestation</a> requires 14 to 16 months, producing a single calf.<a href="#cite_note-princeton-12">[11]</a> Sexually mature females give birth once every 4 to 20 years (pregnancy rates were higher during the whaling era).<a href="#cite_note-Whitehead122-183">[182]</a> Birth is a social event, as the mother and calf need others to protect them from predators. The other adults may jostle and bite the newborn in its first hours.<a href="#cite_note-Whitehead185-185">[184]</a> <a href="/wiki/Lactation" title="Lactation">Lactation</a> proceeds for 19 to 42 months, but calves, rarely, may suckle up to 13 years.<a href="#cite_note-princeton-12">[11]</a> Like that of other whales, the sperm whale's milk has a higher fat content than that of terrestrial mammals: about 36%,<a href="#cite_note-Lockyer499-186">[185]</a> compared to 4% in cow milk. This gives it a consistency similar to cottage cheese,<a href="#cite_note-187">[186]</a> which prevents it from dissolving in the water before the calf can drink it.<a href="#cite_note-188">[187]</a> It has an energy content of roughly 3,840 kcal/kg,<a href="#cite_note-Lockyer499-186">[185]</a> compared to just 640 kcal/kg in cow milk.<a href="#cite_note-189">[188]</a> Calves may be allowed to suckle from females other than their mothers.<a href="#cite_note-princeton-12">[11]</a> Males become sexually mature at 18 years. Upon reaching sexual maturity, males move to higher <a href="/wiki/Latitude" title="Latitude">latitudes</a>, where the water is colder and feeding is more productive. Females remain at lower latitudes.<a href="#cite_note-princeton-12">[11]</a> Males reach their full size at about age 50.<a href="#cite_note-encyc-37">[36]</a> <div class="mw-heading mw-heading2"><h2 id="Social_behaviour">Social behaviour</h2></div> <div class="mw-heading mw-heading3"><h3 id="Relations_within_the_species">Relations within the species</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Marguerite_formation_Vector.svg" class="mw-file-description"><img alt="Diagram showing silhouettes of 10 inward-facing whales surrounding a single, presumably injured, group member" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Marguerite_formation_Vector.svg/220px-Marguerite_formation_Vector.svg.png" decoding="async" width="220" height="259" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Marguerite_formation_Vector.svg/330px-Marguerite_formation_Vector.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/53/Marguerite_formation_Vector.svg/440px-Marguerite_formation_Vector.svg.png 2x" data-file-width="558" data-file-height="657" /></a><figcaption>Sperm whales adopt the "<a href="/wiki/Marguerite_daisy" class="mw-redirect" title="Marguerite daisy">marguerite</a> formation" to defend a vulnerable pod member.</figcaption></figure> Like elephants, females and their young live in matriarchal groups called pods, while bulls live apart. Bulls sometimes form loose bachelor groups with other males of similar age and size. As they grow older, they typically live solitary lives, only returning to the pod to socialize or to breed.<a href="#cite_note-encyc-37">[36]</a> Bulls have <a href="/wiki/Cetacean_stranding" title="Cetacean stranding">beached</a> themselves together, suggesting a degree of cooperation which is not yet fully understood.<a href="#cite_note-encyc-37">[36]</a> The whales rarely, if ever, leave their group.<a href="#cite_note-Whitehead232-190">[189]</a> A social unit is a group of sperm whales who live and travel together over a period of years. Individuals rarely, if ever, join or leave a social unit. There is a huge variance in the size of social units. They are most commonly between six and nine individuals in size but can have more than twenty.<a href="#cite_note-Whitehead233-191">[190]</a> Unlike <a href="/wiki/Killer_whale" class="mw-redirect" title="Killer whale">orcas</a>, sperm whales within a social unit show no significant tendency to associate with their genetic relatives.<a href="#cite_note-Whitehead235-192">[191]</a> Females and calves spend about three-quarters of their time foraging and a quarter of their time socializing. Socializing usually takes place in the afternoon.<a href="#cite_note-Whitehead204-193">[192]</a> When sperm whales socialize, they emit complex patterns of clicks called <a href="#Types_of_vocalization">codas</a>. They will spend much of the time rubbing against each other. Tracking of diving whales suggests that groups engage in <a href="/wiki/Herding" title="Herding">herding</a> of prey, similar to <a href="/wiki/Bait_ball" title="Bait ball">bait balls</a> created by other species, though the research needs to be confirmed by tracking the prey.<a href="#cite_note-194">[193]</a><a href="#cite_note-195">[194]</a> <div class="mw-heading mw-heading3"><h3 id="Relations_with_other_species">Relations with other species</h3></div> The most common natural predator of sperm whales is the <a href="/wiki/Killer_whale" class="mw-redirect" title="Killer whale">orca (killer whale)</a>, but <a href="/wiki/Pilot_whale" title="Pilot whale">pilot whales</a> and <a href="/wiki/False_killer_whale" title="False killer whale">false killer whales</a> sometimes harass them.<a href="#cite_note-196">[195]</a><a href="#cite_note-197">[196]</a> Orcas prey on target groups of females with young, usually making an effort to extract and kill a calf. The females will protect their calves or an injured adult by encircling them. They may face inwards with their tails out (the 'marguerite formation', named after <a href="/wiki/Marguerite_daisy" class="mw-redirect" title="Marguerite daisy">the flower</a>). The heavy and powerful tail of an adult whale is potentially capable of delivering lethal blows.<a href="#cite_note-198">[197]</a> Alternatively, they may face outwards (the 'heads-out formation'). Other than sperm whales, <a href="/wiki/Southern_right_whale" title="Southern right whale">southern right whales</a> had been observed to perform similar formations.<a href="#cite_note-Ponnampalam2016-199">[198]</a> However, formations in non-dangerous situations have been recorded as well.<a href="#cite_note-Ponnampalam2016-199">[198]</a> Early whalers exploited this behaviour, attracting a whole unit by injuring one of its members.<a href="#cite_note-200">[199]</a> Such a tactic is described in <a href="/wiki/Moby-Dick" title="Moby-Dick">Moby-Dick</a>: <blockquote>"Say you strike a Forty-barrel-bull—poor devil! all his comrades quit him. But strike a member of the harem school, and her companions swim around her with every token of concern, sometimes lingering so near her and so long, as themselves to fall a prey."<a href="#cite_note-201">[200]</a></blockquote>If the killer whale pod is large, its members may sometimes be able to kill adult female sperm whales and can at least injure an entire pod of sperm whales.<a href="#cite_note-202">[201]</a><a href="#cite_note-203">[202]</a> Bulls have no predators, and are believed to be too large, powerful and aggressive to be threatened by killer whales.<a href="#cite_note-estes-204">[203]</a> Solitary bulls are known to interfere and come to the aid of vulnerable groups nearby.<a href="#cite_note-205">[204]</a> However, the bull sperm whale, when accompanying pods of female sperm whales and their calves as such, may be reportedly unable to effectively dissuade killer whales from their attacks on the group, although the killer whales may end the attack sooner when a bull is present.<a href="#cite_note-Whitehead-206">[205]</a><a href="#cite_note-207">[206]</a> However, male sperm whales have been observed to attack and intimidate killer whale pods in competitive feeding instances. An incident was filmed from a long-line trawler: a killer whale pod was systematically taking fish caught on the trawler's long lines (as the lines were being pulled into the ship) when a male sperm whale appeared to repeatedly charge the killer whale pod in an attempt to drive them away; it was speculated by the film crew that the sperm whale was attempting to access the same fish. The killer whales employed a tail outward and tail-slapping defensive position against the bull sperm whale similar to that used by female sperm whales against attacking killer whales.<a href="#cite_note-208">[207]</a> However, at some potential feeding sites, the killer whales may prevail over sperm whales even when outnumbered by the sperm whales. Some authors consider the killer whales "usually" behaviorally dominant over sperm whales but express that the two species are "fairly evenly matched", with the killer whales' greater aggression, more considerable biting force for their size and predatory prowess more than compensating for their smaller size.<a href="#cite_note-Whitehead-206">[205]</a><a href="#cite_note-209">[208]</a> Sperm whales are not known for forging bonds with other species, but it was observed that a bottlenose dolphin with a spinal deformity had been accepted into a pod of sperm whales.<a href="#cite_note-210">[209]</a> They are known to swim alongside other <a href="/wiki/Cetaceans" class="mw-redirect" title="Cetaceans">cetaceans</a> such as <a href="/wiki/Humpback_whale" title="Humpback whale">humpback</a>,<a href="#cite_note-211">[210]</a> <a href="/wiki/Fin_whale" title="Fin whale">fin</a>, <a href="/wiki/Minke_whale" title="Minke whale">minke</a>, <a href="/wiki/Pilot_whale" title="Pilot whale">pilot</a>,<a href="#cite_note-212">[211]</a> and <a href="/wiki/Killer_whale" class="mw-redirect" title="Killer whale">killer</a> whales on occasion.<a href="#cite_note-213">[212]</a> <div class="mw-heading mw-heading3"><h3 id="Parasites">Parasites</h3></div> Sperm whales can suffer from parasites. Out of 35 sperm whales caught during the 1976–1977 Antarctic whaling season, all of them were infected by <a href="/wiki/Anisakis" title="Anisakis">Anisakis</a> physeteris (in their stomachs) and <a href="/w/index.php?title=Phyllobothrium&action=edit&redlink=1" class="new" title="Phyllobothrium (page does not exist)">Phyllobothrium</a> delphini (in their blubber). Both whales with a placenta were infected with <a href="/wiki/Placentonema_gigantissima" title="Placentonema gigantissima">Placentonema gigantissima</a>,<a href="#cite_note-Dailey-214">[213]</a> potentially the largest nematode worm ever described.<a href="#cite_note-215">[214]</a> <div class="mw-heading mw-heading2"><h2 id="Evolutionary_history">Evolutionary history</h2></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/Sperm_whale_family" class="mw-redirect" title="Sperm whale family">Sperm whale family</a></div> <table style="border: 1px solid #ccc; vertical-align: middle; width: 248px; margin:0.2em 0 0.2em 1em; float:right; clear:right;"> <tbody><tr> <td style="padding: 5px"> <div class="clade"><style data-mw-deduplicate="TemplateStyles:r1258728058">body.skin-vector-2022 .mw-parser-output div.clade,body.skin-minerva .mw-parser-output div.clade{overflow-x:auto;overflow-y:hidden}body.skin-minerva .mw-parser-output div.clade p{font-size:inherit}.mw-parser-output table.clade{border-spacing:0;margin:0;font-size:100%;line-height:100%;border-collapse:separate;width:auto}.mw-parser-output table.clade table.clade{width:100%;line-height:inherit}.mw-parser-output table.clade td.clade-label{min-width:0.2em;width:0.2em;padding:0.1em 0.25em;vertical-align:bottom;text-align:center;border-left:1px solid;border-bottom:1px solid;white-space:nowrap}.mw-parser-output table.clade td.clade-label::before,.mw-parser-output table.clade td.clade-slabel::before{content:"\2060 "}.mw-parser-output table.clade td.clade-fixed-width{overflow:hidden;text-overflow:ellipsis}.mw-parser-output table.clade td.clade-fixed-width:hover{overflow:visible}.mw-parser-output table.clade td.clade-label.first{border-left:none;border-right:none}.mw-parser-output table.clade td.clade-label.reverse{border-left:none;border-right:1px solid}.mw-parser-output table.clade td.clade-slabel{padding:0.1em 0.25em;vertical-align:top;text-align:center;border-left:1px solid;white-space:nowrap}.mw-parser-output table.clade td.clade-slabel:hover{overflow:visible}.mw-parser-output table.clade td.clade-slabel.last{border-left:none;border-right:none}.mw-parser-output table.clade td.clade-slabel.reverse{border-left:none;border-right:1px solid}.mw-parser-output table.clade td.clade-bar{vertical-align:middle;text-align:left;padding:0 0.5em;position:relative}.mw-parser-output table.clade td.clade-bar.reverse{text-align:right;position:relative}.mw-parser-output table.clade td.clade-leaf{border:0;padding:0;text-align:left}.mw-parser-output table.clade td.clade-leafR{border:0;padding:0;text-align:right}.mw-parser-output table.clade td.clade-leaf.reverse{text-align:right}.mw-parser-output table.clade:hover span.linkA{background-color:yellow}.mw-parser-output table.clade:hover span.linkB{background-color:green}</style> <table class="clade"> <tbody><tr> <td class="clade-label first"><div style="display:inline" class="nowrap"><a href="/wiki/Cetacea" title="Cetacea">Cetacea</a>    </div> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"><a href="/wiki/Toothed_whale" title="Toothed whale">Toothed whales</a> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"><a href="/wiki/Physeteroidea" title="Physeteroidea">Physeteroidea</a> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> Other Physeteroidea† </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"><a href="/wiki/Kogiidae" title="Kogiidae">Kogiidae</a> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Pygmy_sperm_whale" title="Pygmy sperm whale">Pygmy sperm whale</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Dwarf_sperm_whale" title="Dwarf sperm whale">Dwarf sperm whale</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"><a href="/wiki/Physeteridae" class="mw-redirect" title="Physeteridae">Physeteridae</a> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> Other Physeteridae† </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> Sperm whale </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/South_Asian_river_dolphin" title="South Asian river dolphin">South Asian river dolphin</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <div><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1258728058"> <table class="clade"> <tbody><tr> <td class="clade-label first"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Platanistoidea" class="mw-redirect" title="Platanistoidea">Other river dolphins</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Delphinidae" class="mw-redirect" title="Delphinidae">Oceanic dolphins</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Phocoenidae" class="mw-redirect" title="Phocoenidae">Porpoises</a> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Monodontidae" title="Monodontidae">Arctic whales</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Ziphiidae" class="mw-redirect" title="Ziphiidae">Beaked whales</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel"> </td></tr> <tr> <td class="clade-label"> </td> <td rowspan="2" class="clade-leaf"> <a href="/wiki/Mysticeti" class="mw-redirect" title="Mysticeti">Baleen whales</a> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td class="clade-slabel last"> </td></tr></tbody></table></div> </td></tr> <tr> <td style="text-align: left; font-size: 88%; border: 0; padding: 0;">Evolutionary family tree of sperm whales,<a href="#cite_note-Nikaido-216">[215]</a> including simplified summary of extinct groups (†)<a href="#cite_note-Zygophyseter-217">[216]</a> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Fossil_record">Fossil record</h3></div> Although the fossil record is poor,<a href="#cite_note-FordyceBarnes2004EvolutionaryHistory-218">[217]</a> several extinct genera have been assigned to the <a href="/wiki/Clade" title="Clade">clade</a> <a href="/wiki/Physeteroidea" title="Physeteroidea">Physeteroidea</a>, which includes the last common ancestor of the modern sperm whale, <a href="/wiki/Pygmy_sperm_whale" title="Pygmy sperm whale">pygmy sperm whales</a>, <a href="/wiki/Dwarf_sperm_whale" title="Dwarf sperm whale">dwarf sperm whales</a>, and extinct physeteroids. These fossils include <a href="/w/index.php?title=Ferecetotherium&action=edit&redlink=1" class="new" title="Ferecetotherium (page does not exist)">Ferecetotherium</a>, <a href="/wiki/Idiorophus" title="Idiorophus">Idiorophus</a>, <a href="/wiki/Diaphorocetus" title="Diaphorocetus">Diaphorocetus</a>, <a href="/wiki/Aulophyseter" title="Aulophyseter">Aulophyseter</a>, <a href="/wiki/Orycterocetus" title="Orycterocetus">Orycterocetus</a>, <a href="/wiki/Scaldicetus" title="Scaldicetus">Scaldicetus</a>, <a href="/w/index.php?title=Placoziphius&action=edit&redlink=1" class="new" title="Placoziphius (page does not exist)">Placoziphius</a>, <a href="/wiki/Zygophyseter" title="Zygophyseter">Zygophyseter</a> and <a href="/wiki/Acrophyseter" title="Acrophyseter">Acrophyseter</a>.<a href="#cite_note-Acrophyseter-25">[24]</a><a href="#cite_note-Zygophyseter-217">[216]</a><a href="#cite_note-219">[218]</a> Ferecetotherium, found in <a href="/wiki/Azerbaijan" title="Azerbaijan">Azerbaijan</a> and dated to the late <a href="/wiki/Oligocene" title="Oligocene">Oligocene</a> (about <a rel="nofollow" class="external text" href="https://geoltime.github.io/?Ma=28–23">28 to 23</a> million years ago), is the most primitive fossil that has been found, which possesses sperm whale-specific features, such as an asymmetric <a href="/wiki/Rostrum_(anatomy)" title="Rostrum (anatomy)">rostrum</a> ("beak" or "snout").<a href="#cite_note-evolution-220">[219]</a> Most sperm whale fossils date from the <a href="/wiki/Miocene" title="Miocene">Miocene</a> period, <a rel="nofollow" class="external text" href="https://geoltime.github.io/?Ma=23–5">23 to 5</a> million years ago. Diaphorocetus, from <a href="/wiki/Argentina" title="Argentina">Argentina</a>, has been dated to the early <a href="/wiki/Miocene" title="Miocene">Miocene</a>. Fossil sperm whales from the <a href="/wiki/Middle_Miocene" title="Middle Miocene">Middle Miocene</a> include Aulophyseter, Idiorophus and Orycterocetus, all of which were found on the West Coast of the United States, and Scaldicetus, found in Europe and <a href="/wiki/Japan" title="Japan">Japan</a>.<a href="#cite_note-evolution-220">[219]</a><a href="#cite_note-Scaldicetus-221">[220]</a> Orycterocetus fossils have also been found in the North <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic Ocean</a> and the <a href="/wiki/Mediterranean_Sea" title="Mediterranean Sea">Mediterranean Sea</a>, in addition to the west coast of the United States.<a href="#cite_note-222">[221]</a> Placoziphius, found in Europe, and Acrophyseter, from <a href="/wiki/Peru" title="Peru">Peru</a>, are dated to the late Miocene.<a href="#cite_note-Acrophyseter-25">[24]</a><a href="#cite_note-evolution-220">[219]</a> Fossil sperm whales differ from modern sperm whales in tooth count and the shape of the face and jaws.<a href="#cite_note-evolution-220">[219]</a> For example, Scaldicetus had a tapered rostrum.<a href="#cite_note-Scaldicetus-221">[220]</a> Genera from the Oligocene and early and middle Miocene, with the possible exception of Aulophyseter, had teeth in their upper jaws.<a href="#cite_note-evolution-220">[219]</a> Acrophyseter, from the late Miocene, also had teeth in both the upper and lower jaws as well as a short rostrum and an upward curving <a href="/wiki/Mandible" title="Mandible">mandible</a> (lower jaw).<a href="#cite_note-Acrophyseter-25">[24]</a> These anatomical differences suggest that fossil species may not have necessarily been deep-sea squid eaters such as the modern sperm whale, but that some genera mainly ate fish.<a href="#cite_note-evolution-220">[219]</a> Zygophyseter, dated from the middle to late Miocene and found in southern <a href="/wiki/Italy" title="Italy">Italy</a>, had teeth in both jaws and appears to have been adapted to feed on large prey, rather like the modern <a href="/wiki/Killer_whale" class="mw-redirect" title="Killer whale">killer whale</a> (orca). Other fossil sperm whales with adaptations similar to this are collectively known as <a href="/wiki/Killer_sperm_whale" class="mw-redirect" title="Killer sperm whale">killer sperm whales</a>.<a href="#cite_note-Zygophyseter-217">[216]</a> Two poorly known fossil species belonging to the modern genus Physeter have been recognized so far: P. antiquus (<a href="/wiki/Neogene" title="Neogene">Neogene</a> of France)<a href="#cite_note-223">[222]</a> and P. vetus (Neogene of eastern North America).<a href="#cite_note-224">[223]</a> Physeter vetus is very likely an invalid species, as the few teeth that were used to identify this species appear to be identical to those of another toothed whale, <a href="/wiki/Orycterocetus" title="Orycterocetus">Orycterocetus quadratidens</a>.<a href="#cite_note-225">[224]</a> <div class="mw-heading mw-heading3"><h3 id="Phylogeny">Phylogeny</h3></div> The traditional view has been that <a href="/wiki/Mysticeti" class="mw-redirect" title="Mysticeti">Mysticeti</a> (baleen whales) and <a href="/wiki/Odontoceti" class="mw-redirect" title="Odontoceti">Odontoceti</a> (toothed whales) arose from more primitive whales early in the <a href="/wiki/Oligocene" title="Oligocene">Oligocene</a> period, and that the super-family Physeteroidea, which contains the sperm whale, dwarf sperm whale, and pygmy sperm whale, diverged from other toothed whales soon after that, over <a rel="nofollow" class="external text" href="https://geoltime.github.io/?Ma=23">23</a> million years ago.<a href="#cite_note-FordyceBarnes2004EvolutionaryHistory-218">[217]</a><a href="#cite_note-evolution-220">[219]</a> From 1993 to 1996, <a href="/wiki/Molecular_phylogenetics" title="Molecular phylogenetics">molecular phylogenetics</a> analyses by Milinkovitch and colleagues, based on comparing the <a href="/wiki/Genes" class="mw-redirect" title="Genes">genes</a> of various modern whales, suggested that the sperm whales are more closely related to the <a href="/wiki/Baleen_whales" class="mw-redirect" title="Baleen whales">baleen whales</a> than they are to other toothed whales, which would have meant that <a href="/wiki/Odontoceti" class="mw-redirect" title="Odontoceti">Odontoceti</a> were not <a href="/wiki/Monophyletic" class="mw-redirect" title="Monophyletic">monophyletic</a>; in other words, it did not consist of a single ancestral toothed whale species and all its descendants.<a href="#cite_note-Nikaido-216">[215]</a> However, more recent studies, based on various combinations of <a href="/wiki/Comparative_anatomy" title="Comparative anatomy">comparative anatomy</a> and molecular phylogenetics, criticised Milinkovitch's analysis on technical grounds and reaffirmed that the Odontoceti are monophyletic.<a href="#cite_note-Nikaido-216">[215]</a><a href="#cite_note-evolve-226">[225]</a><a href="#cite_note-227">[226]</a> These analyses also confirm that there was a rapid <a href="/wiki/Evolutionary_radiation" title="Evolutionary radiation">evolutionary radiation</a> (diversification) of the <a href="/wiki/Physeteroidea" title="Physeteroidea">Physeteroidea</a> in the <a href="/wiki/Miocene" title="Miocene">Miocene</a> period.<a href="#cite_note-Zygophyseter-217">[216]</a> The <a href="/wiki/Kogiidae" title="Kogiidae">Kogiidae</a> (dwarf and pygmy sperm whales) diverged from the <a href="/wiki/Physeteridae" class="mw-redirect" title="Physeteridae">Physeteridae</a> (true sperm whales) at least <a rel="nofollow" class="external text" href="https://geoltime.github.io/?Ma=8">8</a> million years ago.<a href="#cite_note-evolve-226">[225]</a> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Relationship_with_humans">Relationship with humans</h2></div> <div class="mw-heading mw-heading3"><h3 id="Sperm_whaling">Sperm whaling</h3></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/Whaling" title="Whaling">Whaling</a> and <a href="/wiki/Sperm_whaling" title="Sperm whaling">Sperm whaling</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Whaling_of_sperm_whale.jpg" class="mw-file-description"><img alt="Painting of a sperm whale destroying a boat, with other boats in the background" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Whaling_of_sperm_whale.jpg/220px-Whaling_of_sperm_whale.jpg" decoding="async" width="220" height="166" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Whaling_of_sperm_whale.jpg/330px-Whaling_of_sperm_whale.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Whaling_of_sperm_whale.jpg/440px-Whaling_of_sperm_whale.jpg 2x" data-file-width="589" data-file-height="445" /></a><figcaption>In the 19th century, sperm whales were hunted using rowboats and hand-thrown harpoons, a rather dangerous method, as the whales sometimes fought back. </figcaption></figure> <a href="/wiki/Spermaceti" title="Spermaceti">Spermaceti</a>, obtained primarily from the spermaceti organ, and <a href="/wiki/Whale_oil" title="Whale oil">sperm oil</a>, obtained primarily from the <a href="/wiki/Blubber" title="Blubber">blubber</a> in the body, were much sought after by 18th, 19th, and 20th century <a href="/wiki/Whaling" title="Whaling">whalers</a>. These substances found a variety of commercial applications, such as <a href="/wiki/Candle" title="Candle">candles</a>, <a href="/wiki/Soap" title="Soap">soap</a>, <a href="/wiki/Cosmetics" title="Cosmetics">cosmetics</a>, machine oil, other specialised lubricants, lamp oil, pencils, crayons, leather waterproofing, rust-proofing materials and many pharmaceutical compounds.<a href="#cite_note-smithsonian-228">[227]</a><a href="#cite_note-highseas-229">[228]</a><a href="#cite_note-230">[229]</a><a href="#cite_note-231">[230]</a> <a href="/wiki/Ambergris" title="Ambergris">Ambergris</a>, a highly expensive, solid, waxy, flammable substance produced in the digestive system of sperm whales, was also sought as a <a href="/wiki/Fixative_(perfumery)" title="Fixative (perfumery)">fixative</a> in <a href="/wiki/Perfumery" class="mw-redirect" title="Perfumery">perfumery</a>.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Prior to the early eighteenth century, hunting was mostly by indigenous Indonesians.<a href="#cite_note-232">[231]</a> Legend has it that sometime in the early 18th century, around 1712, Captain Christopher Hussey, while cruising for <a href="/wiki/Right_whale" title="Right whale">right whales</a> near shore, was blown offshore by a northerly wind, where he encountered a sperm whale pod and killed one.<a href="#cite_note-233">[232]</a> Although the story may not be true, sperm whales were indeed soon exploited by American whalers. Judge <a href="/wiki/Paul_Dudley_(jurist)" title="Paul Dudley (jurist)">Paul Dudley</a>, in his Essay upon the Natural History of Whales (1725), states that a certain Atkins, 10 or 12 years in the trade, was among the first to catch sperm whales sometime around 1720 off the <a href="/wiki/New_England" title="New England">New England</a> coast.<a href="#cite_note-dudley-234">[233]</a> There were only a few recorded instances during the first few decades (1709–1730s) of offshore sperm whaling. Instead, <a href="/wiki/Sloop" title="Sloop">sloops</a> concentrated on the <a href="/wiki/Nantucket_Shoals" title="Nantucket Shoals">Nantucket Shoals</a>, where they would have taken right whales or went to the <a href="/wiki/Davis_Strait" title="Davis Strait">Davis Strait</a> region to catch <a href="/wiki/Bowhead_whale" title="Bowhead whale">bowhead whales</a>. By the early 1740s, with the advent of spermaceti candles (before 1743), American vessels began to focus on sperm whales. The diary of Benjamin Bangs (1721–1769) shows that, along with the bumpkin sloop he sailed, he found three other sloops flensing sperm whales off the coast of North Carolina in late May 1743.<a href="#cite_note-leviathan-235">[234]</a> On returning to Nantucket in the summer 1744 on a subsequent voyage, he noted that "45 spermacetes are brought in here this day," another indication that American sperm whaling was in full swing.<a href="#cite_note-leviathan-235">[234]</a> American sperm whaling soon spread from the east coast of the American colonies to the <a href="/wiki/Gulf_Stream" title="Gulf Stream">Gulf Stream</a>, the <a href="/wiki/Grand_Banks" class="mw-redirect" title="Grand Banks">Grand Banks</a>, West Africa (1763), the <a href="/wiki/Azores" title="Azores">Azores</a> (1765), and the South Atlantic (1770s). From 1770 to 1775 Massachusetts, New York, Connecticut, and Rhode Island ports produced 45,000 barrels of sperm oil annually, compared to 8,500 of whale oil.<a href="#cite_note-history-236">[235]</a> In the same decade, the British began sperm whaling, employing American ships and personnel.<a href="#cite_note-bockstoce-237">[236]</a> By the following decade, the French had entered the trade, also employing American expertise.<a href="#cite_note-bockstoce-237">[236]</a> Sperm whaling increased until the mid-nineteenth century. Spermaceti oil was important in public lighting (for example, in lighthouses, where it was used in the United States until 1862, when it was replaced by lard oil, in turn replaced by <a href="/wiki/Petroleum" title="Petroleum">petroleum</a>) and for lubricating the machines (such as those used in cotton mills) of the <a href="/wiki/Industrial_Revolution" title="Industrial Revolution">Industrial Revolution</a>. Sperm whaling declined in the second half of the nineteenth century, as petroleum came into broader use. In that sense, petroleum use may be said to have protected whale populations from even greater exploitation.<a href="#cite_note-estes2-238">[237]</a><a href="#cite_note-whiteheadwhaling-239">[238]</a> Sperm whaling in the 18th century began with small sloops carrying only one or two whaleboats. The fleet's scope and size increased over time, and larger ships entered the fishery. In the late 18th century and early 19th century, sperm whaling ships sailed to the equatorial Pacific, the Indian Ocean, Japan, the coast of Arabia, Australia and New Zealand.<a href="#cite_note-bockstoce-237">[236]</a><a href="#cite_note-240">[239]</a><a href="#cite_note-241">[240]</a> Hunting could be dangerous to the crew, since sperm whales (especially bulls) will readily fight to defend themselves against attack, unlike most baleen whales. When dealing with a threat, sperm whales will use their huge head effectively as a battering ram.<a href="#cite_note-Carrier-105">[104]</a> Arguably the most famous sperm whale counter-attack occurred on 20 November 1820, when a whale claimed to be about 25.9 metres (85 ft) long rammed and sank the <a href="/wiki/Nantucket" title="Nantucket">Nantucket</a> whaleship <a href="/wiki/Essex_(1799_whaleship)" class="mw-redirect" title="Essex (1799 whaleship)">Essex</a>. Only 8 out of 21 sailors survived to be rescued by other ships.<a href="#cite_note-242">[241]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Nantucket_Whaling_scrimshaw_E.Burdett.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Nantucket_Whaling_scrimshaw_E.Burdett.jpg/220px-Nantucket_Whaling_scrimshaw_E.Burdett.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Nantucket_Whaling_scrimshaw_E.Burdett.jpg/330px-Nantucket_Whaling_scrimshaw_E.Burdett.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Nantucket_Whaling_scrimshaw_E.Burdett.jpg/440px-Nantucket_Whaling_scrimshaw_E.Burdett.jpg 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption><a href="/wiki/Scrimshaw" title="Scrimshaw">Scrimshaw</a> was the art of engraving on the teeth of sperm whales. It was a way for whalers to pass the time between hunts.</figcaption></figure> The sperm whale's ivory-like teeth were often sought by 18th- and 19th-century whalers, who used them to produce inked carvings known as <a href="/wiki/Scrimshaw" title="Scrimshaw">scrimshaw</a>. 30 teeth of the sperm whale can be used for ivory. Each of these teeth, up to 20 cm (8 in) and 8 cm (3 in) across, are hollow for the first half of their length. Like <a href="/wiki/Walrus" title="Walrus">walrus</a> ivory, sperm whale ivory has two distinct layers. However, sperm whale ivory contains a much thicker inner layer. Though a widely practised art in the 19th century, scrimshaw using genuine sperm whale ivory declined substantially after the retirement of the whaling fleets in the 1880s.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Modern whaling was more efficient than open-boat whaling, employing steam-powered ships and exploding <a href="/wiki/Harpoon" title="Harpoon">harpoons</a>. Initially, modern whaling activity focused on large <a href="/wiki/Baleen_whale" title="Baleen whale">baleen whales</a>, but as these populations were taken, sperm whaling increased. <a href="/wiki/Spermaceti" title="Spermaceti">Spermaceti</a>, the fine waxy oil produced by sperm whales, was in high demand. In both the 1941–1942 and 1942–1943 seasons, Norwegian expeditions took over 3,000 sperm whales off the coast of Peru alone. After <a href="/wiki/World_War_II" title="World War II">World War II</a>, whaling continued unabated to obtain oil for cosmetics and high-performance machinery, such as automobile transmissions.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The hunting led to the near-extinction of large whales, including sperm whales, until bans on whale oil use were instituted in 1972. The International Whaling Commission gave the species full protection in 1985, but hunting by <a href="/wiki/Japan" title="Japan">Japan</a> in the northern <a href="/wiki/Pacific_Ocean" title="Pacific Ocean">Pacific Ocean</a> continued until 1988.<a href="#cite_note-whiteheadwhaling-239">[238]</a> It is estimated that the historic worldwide population numbered 1,100,000 before commercial sperm whaling began in the early 18th century.<a href="#cite_note-iucn-3">[3]</a> By 1880, it had declined by an estimated 29 percent.<a href="#cite_note-iucn-3">[3]</a> From that date until 1946, the population appears to have partially recovered as whaling activity decreased, but after the Second World War, the population declined even further, to 33 per cent of the pre-whaling population.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Between 184,000 and 236,000 sperm whales were killed by the various whaling nations in the 19th century,<a href="#cite_note-243">[242]</a> while in the 20th century, at least 770,000 were taken, the majority between 1946 and 1980.<a href="#cite_note-244">[243]</a> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sperm_whale_catches.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Sperm_whale_catches.jpg/220px-Sperm_whale_catches.jpg" decoding="async" width="220" height="148" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Sperm_whale_catches.jpg/330px-Sperm_whale_catches.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bd/Sperm_whale_catches.jpg/440px-Sperm_whale_catches.jpg 2x" data-file-width="1034" data-file-height="695" /></a><figcaption>Sperm whaling peaked in the 1830s and 1960s.</figcaption></figure> Sperm whales increase levels of primary production and carbon export by depositing iron-rich faeces into surface waters of the Southern Ocean. The iron-rich faeces cause phytoplankton to grow and take up more carbon from the atmosphere. When the phytoplankton dies, it sinks to the deep ocean and takes the atmospheric carbon with it. By reducing the abundance of sperm whales in the Southern Ocean, whaling has resulted in an extra 2 million tonnes of carbon remaining in the atmosphere each year.<a href="#cite_note-245">[244]</a> Remaining sperm whale populations are large enough that the species' conservation status is rated as vulnerable rather than endangered.<a href="#cite_note-iucn-3">[3]</a> However, the recovery from centuries of commercial whaling is a slow process, particularly in the <a href="/wiki/South_Pacific_Ocean" class="mw-redirect" title="South Pacific Ocean">South Pacific</a>, where the toll on breeding-age males was severe.<a href="#cite_note-whiteheadghosts-246">[245]</a> <div class="mw-heading mw-heading3"><h3 id="Current_conservation_status">Current conservation status</h3></div> The total number of sperm whales in the world is unknown, but is thought to be in the hundreds of thousands.<a href="#cite_note-iucn-3">[3]</a> The conservation outlook is brighter than for many other whales. Commercial whaling has ceased,<a href="#cite_note-iucn-3">[3]</a> and the species is protected almost worldwide, though records indicate that in the 11-year period starting from 2000, <a href="/wiki/Whaling_in_Japan" title="Whaling in Japan">Japanese vessels</a> have caught 51 sperm whales.[<a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers#Chronological_items" title="Wikipedia:Manual of Style/Dates and numbers">needs update</a>] Fishermen do not target sperm whales to eat,<a href="#cite_note-iucn-3">[3]</a> but <a href="/wiki/Longline_fishing" title="Longline fishing">long-line fishing</a> operations in the <a href="/wiki/Gulf_of_Alaska" title="Gulf of Alaska">Gulf of Alaska</a> have complained about sperm whales "stealing" fish from their lines.<a href="#cite_note-Sneaky_Cetaceans-165">[164]</a> Currently, entanglement in fishing nets and collisions with ships represent the greatest threats to the sperm whale population.<a href="#cite_note-audubon-13">[12]</a> Other threats include ingestion of <a href="/wiki/Marine_debris" title="Marine debris">marine debris</a>, ocean noise, and chemical pollution.<a href="#cite_note-247">[246]</a> The <a href="/wiki/International_Union_for_Conservation_of_Nature" title="International Union for Conservation of Nature">International Union for Conservation of Nature</a> (IUCN) regards the sperm whale as being "<a href="/wiki/Vulnerable_species" title="Vulnerable species">vulnerable</a>".<a href="#cite_note-iucn-3">[3]</a> The species is listed as endangered on the United States <a href="/wiki/Endangered_Species_Act" class="mw-redirect" title="Endangered Species Act">Endangered Species Act</a>.<a href="#cite_note-248">[247]</a> Sperm whales are listed on Appendix I<a href="#cite_note-Appendices-249">[248]</a> and Appendix II<a href="#cite_note-Appendices-249">[248]</a> of the <a href="/wiki/Convention_on_Migratory_Species" class="mw-redirect" title="Convention on Migratory Species">Convention on the Conservation of Migratory Species of Wild Animals</a> (CMS). It is listed on Appendix I<a href="#cite_note-Appendices-249">[248]</a> as this species has been categorized as being in danger of extinction throughout all or a significant proportion of their range and CMS Parties strive towards strictly protecting these animals, conserving or restoring the places where they live, mitigating obstacles to migration and controlling other factors that might endanger them. It is listed on Appendix II<a href="#cite_note-Appendices-249">[248]</a> as it has an unfavourable conservation status or would benefit significantly from international co-operation organised by tailored agreements. It is also covered by <a href="/wiki/ACCOBAMS" class="mw-redirect" title="ACCOBAMS">the Agreement on the Conservation of Cetaceans in the Black Sea, Mediterranean Sea and Contiguous Atlantic Area</a> (ACCOBAMS) and <a href="/wiki/Pacific_Islands_Cetaceans_Memorandum_of_Understanding" title="Pacific Islands Cetaceans Memorandum of Understanding">the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region</a> (Pacific Cetaceans MOU).[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The species is protected under Appendix I of <a href="/wiki/CITES" title="CITES">the Convention on International Trade in Endangered Species of Wild Fauna and Flora</a> (CITES). This makes commercial international trade (including in parts and derivatives) prohibited, with all other international trade strictly regulated through a system of permits and certificates.<a href="#cite_note-CITES-4">[4]</a> <div class="mw-heading mw-heading3"><h3 id="Cultural_importance">Cultural importance</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Necklace,_sperm_whale_teeth,_Fiji,_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG/220px-Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG/330px-Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fc/Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG/440px-Necklace%2C_sperm_whale_teeth%2C_Fiji%2C_c_1895_-_Staatlichen_Museums_f%C3%BCr_V%C3%B6lkerkunde_M%C3%BCnchen_-_DSC08280.JPG 2x" data-file-width="4320" data-file-height="3240" /></a><figcaption>Sperm whale teeth necklace from Fiji</figcaption></figure> Rope-mounted teeth are important cultural objects throughout the Pacific. In <a href="/wiki/New_Zealand" title="New Zealand">New Zealand</a>, the <a href="/wiki/M%C4%81ori_people" title="Māori people">Māori</a> know them as "rei puta"; such whale tooth pendants were rare objects because sperm whales were not actively hunted in traditional <a href="/wiki/M%C4%81ori_people" title="Māori people">Māori</a> society.<a href="#cite_note-250">[249]</a> Whale ivory and bone were taken from beached whales. In <a href="/wiki/Fiji" title="Fiji">Fiji</a> the teeth are known as <a href="/wiki/Tabua" title="Tabua">tabua</a>, traditionally given as gifts for atonement or esteem (called sevusevu), and were important in negotiations between rival chiefs.<a href="#cite_note-251">[250]</a> <a href="/wiki/Friedrich_Ratzel" title="Friedrich Ratzel">Friedrich Ratzel</a> in The History of Mankind reported in 1896 that, in Fiji, whales' or cachalots' teeth were the most-demanded article of ornament or value. They occurred often in necklaces.<a href="#cite_note-252">[251]</a> Today the tabua remains an important item in Fijian life. The teeth were originally rare in Fiji and <a href="/wiki/Tonga" title="Tonga">Tonga</a>, which exported teeth, but with the Europeans' arrival, teeth flooded the market and this "currency" collapsed. The oversupply led in turn to the development of the European art of <a href="/wiki/Scrimshaw" title="Scrimshaw">scrimshaw</a>.<a href="#cite_note-253">[252]</a> <a href="/wiki/Herman_Melville" title="Herman Melville">Herman Melville</a>'s novel <a href="/wiki/Moby-Dick" title="Moby-Dick">Moby-Dick</a> is based on a true story about a sperm whale that attacked and sank the whaleship <a href="/wiki/Essex_(1799_whaleship)" class="mw-redirect" title="Essex (1799 whaleship)">Essex</a>.<a href="#cite_note-bartleby1-254">[253]</a><a href="#cite_note-zwart-255">[254]</a> Melville associated the sperm whale with the Bible's <a href="/wiki/Leviathan" title="Leviathan">Leviathan</a>.<a href="#cite_note-zwart-255">[254]</a><a href="#cite_note-256">[255]</a> The fearsome reputation perpetuated by Melville was based on bull whales' ability to fiercely defend themselves from attacks by early whalers, smashing whaling boats and, occasionally, attacking and destroying whaling ships.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] In <a href="/wiki/Jules_Verne" title="Jules Verne">Jules Verne</a>'s 1870 novel <a href="/wiki/Twenty_Thousand_Leagues_Under_the_Seas" title="Twenty Thousand Leagues Under the Seas">Twenty Thousand Leagues Under the Seas</a>, the Nautilus fights a group of "cachalots" (sperm whales) to protect a pod of <a href="/wiki/Southern_right_whale" title="Southern right whale">southern right whales</a> from their attacks. Verne portrays them as being savage hunters ("nothing but mouth and teeth").[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] The sperm whale was designated as the <a href="/wiki/Connecticut" title="Connecticut">Connecticut</a> <a href="/wiki/List_of_U.S._state_mammals" title="List of U.S. state mammals">state animal</a> by the <a href="/wiki/Connecticut_General_Assembly" title="Connecticut General Assembly">General Assembly</a> in 1975.<a href="#cite_note-257">[256]</a> It was selected because of its specific contribution to the state's history and because of its present-day plight as an endangered species.<a href="#cite_note-258">[257]</a> <div class="mw-heading mw-heading3"><h3 id="Watching_sperm_whales">Watching sperm whales</h3></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/Whale_watching" title="Whale watching">Whale watching</a></div> Sperm whales are not the easiest of whales to <a href="/wiki/Whale_watching" title="Whale watching">watch</a>, due to their long dive times and ability to travel long distances underwater. However, due to the distinctive look and large size of the whale, watching is increasingly popular.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] Sperm whale watchers often use <a href="/wiki/Hydrophone" title="Hydrophone">hydrophones</a> to listen to the clicks of the whales and locate them before they surface.<a href="#cite_note-259">[258]</a> Popular locations for sperm whale watching include the town of <a href="/wiki/Kaik%C5%8Dura" title="Kaikōura">Kaikōura</a> on <a href="/wiki/New_Zealand" title="New Zealand">New Zealand</a>'s <a href="/wiki/South_Island" title="South Island">South Island</a>, <a href="/wiki/Andenes" title="Andenes">Andenes</a> and <a href="/wiki/Troms%C3%B8" title="Tromsø">Tromsø</a> in Arctic <a href="/wiki/Norway" title="Norway">Norway</a>; as well as the <a href="/wiki/Azores" title="Azores">Azores</a>, where the continental shelf is so narrow that whales can be observed from the shore,<a href="#cite_note-whiteheadrange-144">[143]</a><a href="#cite_note-260">[259]</a> and <a href="/wiki/Dominica" title="Dominica">Dominica</a><a href="#cite_note-261">[260]</a> where a long-term scientific research program, The Dominica Sperm Whale Project, has been in operation since 2005.<a href="#cite_note-262">[261]</a> <div class="mw-heading mw-heading3"><h3 id="Plastic_waste">Plastic waste</h3></div> The introduction of <a href="/wiki/Plastic_pollution" title="Plastic pollution">plastic waste</a> to the ocean environment by humans is relatively new. From the 1970s, sperm whales have occasionally been found with pieces of plastic in their stomachs.<a href="#cite_note-chuaetal2019-171">[170]</a><a href="#cite_note-263">[262]</a><a href="#cite_note-264">[263]</a><a href="#cite_note-265">[264]</a> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Sperm_whale_fluke.jpg/32px-Sperm_whale_fluke.jpg" decoding="async" width="32" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Sperm_whale_fluke.jpg/48px-Sperm_whale_fluke.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/Sperm_whale_fluke.jpg/64px-Sperm_whale_fluke.jpg 2x" data-file-width="300" data-file-height="239" /><a href="/wiki/Portal:Cetaceans" title="Portal:Cetaceans">Cetaceans portal</a></li><li class="portalbox-entry"><a href="/wiki/File:Okapi2.jpg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Okapi2.jpg/32px-Okapi2.jpg" decoding="async" width="32" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/18/Okapi2.jpg/48px-Okapi2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/18/Okapi2.jpg/64px-Okapi2.jpg 2x" data-file-width="1707" data-file-height="1482" /></a><a href="/wiki/Portal:Mammals" title="Portal:Mammals">Mammals portal</a></li><li class="portalbox-entry"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Yellow.tang.arp.jpg/32px-Yellow.tang.arp.jpg" decoding="async" width="32" height="25" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Yellow.tang.arp.jpg/48px-Yellow.tang.arp.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Yellow.tang.arp.jpg/64px-Yellow.tang.arp.jpg 2x" data-file-width="1315" data-file-height="1039" /><a href="/wiki/Portal:Marine_life" title="Portal:Marine life">Marine life portal</a></li></ul> <ul><li><a href="/wiki/List_of_sperm_whale_strandings" title="List of sperm whale strandings">List of sperm whale strandings</a></li> <li><a href="/wiki/List_of_cetaceans" title="List of cetaceans">List of cetaceans</a></li> <li><a href="/wiki/List_of_individual_cetaceans" title="List of individual cetaceans">List of individual cetaceans</a></li> <li><a href="/wiki/Marine_biology" title="Marine biology">Marine biology</a></li> <li><a href="/wiki/Livyatan" title="Livyatan">Livyatan</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2></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-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-5"><a href="#cite_ref-5">^</a> <a href="/wiki/Help:IPA/English" title="Help:IPA/English">/ˈkæʃəlɒt, ˈkæʃəloʊ/</a> – <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFReference-OED-cachalot" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=cachalot">"cachalot"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=cachalot&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3Dcachalot&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 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Madrid: Gredos. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-84-249-1332-8" title="Special:BookSources/978-84-249-1332-8"><bdi>978-84-249-1332-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Breve+diccionario+etimol%C3%B3gico+de+la+lengua+castellana&rft.place=Madrid&rft.pub=Gredos&rft.date=1987&rft.isbn=978-84-249-1332-8&rft.aulast=Corominas&rft.aufirst=Joan&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fbrevediccionario00colo&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-20"><a href="#cite_ref-20">^</a> Encarta Dictionary </li> <li id="cite_note-21"><a href="#cite_ref-21">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCrabb1823" class="citation book cs1"><a href="/wiki/George_Crabb_(writer)" title="George Crabb (writer)">Crabb, George</a> (1823). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=jlZBAAAAcAAJ&pg=PT333">Universal Technological Dictionary Or Familiar Explanation of the Terms Used in All Arts and Sciences: Containing Definitions Drawn from the Original Writers : in Two Volumes</a>. Baldwin, Cradock & Joy. p. 333.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Universal+Technological+Dictionary+Or+Familiar+Explanation+of+the+Terms+Used+in+All+Arts+and+Sciences%3A+Containing+Definitions+Drawn+from+the+Original+Writers+%3A+in+Two+Volumes&rft.pages=333&rft.pub=Baldwin%2C+Cradock+%26+Joy&rft.date=1823&rft.aulast=Crabb&rft.aufirst=George&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DjlZBAAAAcAAJ%26pg%3DPT333&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-22"><a href="#cite_ref-22">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRidgway1989" class="citation book cs1">Ridgway, Sam H. (1989). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=IIQXAQAAIAAJ">Handbook of Marine Mammals</a>. Academic Press. p. 179. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-588504-1" title="Special:BookSources/978-0-12-588504-1"><bdi>978-0-12-588504-1</bdi></a>. <q>The earliest available species-group name for a Southern Hemisphere sperm whale is Physeter australasianus Desmoulins, 1822.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Marine+Mammals&rft.pages=179&rft.pub=Academic+Press&rft.date=1989&rft.isbn=978-0-12-588504-1&rft.aulast=Ridgway&rft.aufirst=Sam+H.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DIIQXAQAAIAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-23"><a href="#cite_ref-23">^</a> <style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist" style="display:inline-flex;--size:100%; max-width:max(15em, calc(var(--size) - 3.2em));"><ul style="display:inline-block"><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAgnarssonMay-Collado2008" class="citation journal cs1">Agnarsson, I.; May-Collado, LJ. 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Fisher, Son & Co. p. <a rel="nofollow" class="external text" href="https://archive.org/details/adictionarymech01jamigoog/page/n17">566</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Dictionary+of+Mechanical+Science%2C+Arts%2C+Manufactures%2C+and+Miscellaneous+Knowledge&rft.pages=566&rft.pub=H.+Fisher%2C+Son+%26+Co.&rft.date=1829&rft.au=Jamieson%2C+A.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fadictionarymech01jamigoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-231"><a href="#cite_ref-231">^</a> <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/20190314155801/http://www.aquariumofpacific.org/onlinelearningcenter/print/sperm_whale">"Aquarium of the Pacific – Sperm Whale"</a>. 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Nantucket Historical Association.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Christopher+Hussey+Blown+Out+%28Up%29+to+Sea&rft.pub=Nantucket+Historical+Association&rft.au=Simons%2C+B.&rft_id=http%3A%2F%2Fwww.nha.org%2Fhistory%2Fhn%2FHNsimons-hussey.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-dudley-234"><a href="#cite_ref-dudley_234-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDudley,_P.1725" class="citation book cs1">Dudley, P. (1725). <a rel="nofollow" class="external text" href="https://archive.org/details/philtrans04271050">"An Essay upon the Natural History of Whales, with a Particular Account of the Ambergris Found in the Sperma Ceti Whale"</a>. Philosophical Transactions (1683–1775), Vol. 33. The Royal Society. p. 267.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=An+Essay+upon+the+Natural+History+of+Whales%2C+with+a+Particular+Account+of+the+Ambergris+Found+in+the+Sperma+Ceti+Whale&rft.btitle=Philosophical+Transactions+%281683%E2%80%931775%29%2C+Vol.+33&rft.pages=267&rft.pub=The+Royal+Society&rft.date=1725&rft.au=Dudley%2C+P.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fphiltrans04271050&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-leviathan-235">^ <a href="#cite_ref-leviathan_235-0">a</a> <a href="#cite_ref-leviathan_235-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDolin,_E.2007" class="citation book cs1">Dolin, E. (2007). <a rel="nofollow" class="external text" href="https://archive.org/details/leviathanhistory00doli/page/98">Leviathan: The History of Whaling in America</a>. W. W. Norton. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/leviathanhistory00doli/page/98">98–100</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-393-06057-7" title="Special:BookSources/978-0-393-06057-7"><bdi>978-0-393-06057-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Leviathan%3A+The+History+of+Whaling+in+America&rft.pages=98-100&rft.pub=W.+W.+Norton&rft.date=2007&rft.isbn=978-0-393-06057-7&rft.au=Dolin%2C+E.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fleviathanhistory00doli%2Fpage%2F98&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-history-236"><a href="#cite_ref-history_236-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStarbuck,_A.1878" class="citation book cs1">Starbuck, A. (1878). <a rel="nofollow" class="external text" href="http://mysite.du.edu/~ttyler/ploughboy/starbuck.htm#sectiond">History of the American Whale Fishery from its Earliest Inception to the Year 1876</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-665-35343-7" title="Special:BookSources/978-0-665-35343-7"><bdi>978-0-665-35343-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=History+of+the+American+Whale+Fishery+from+its+Earliest+Inception+to+the+Year+1876&rft.date=1878&rft.isbn=978-0-665-35343-7&rft.au=Starbuck%2C+A.&rft_id=http%3A%2F%2Fmysite.du.edu%2F~ttyler%2Fploughboy%2Fstarbuck.htm%23sectiond&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-bockstoce-237">^ <a href="#cite_ref-bockstoce_237-0">a</a> <a href="#cite_ref-bockstoce_237-1">b</a> <a href="#cite_ref-bockstoce_237-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBockstoce,_J.1984" class="citation journal cs1">Bockstoce, J. (December 1984). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160303184619/http://pubs.aina.ucalgary.ca/arctic/Arctic37-4-528.pdf">"From Davis Strait to Bering Strait: The Arrival of the Commercial Whaling Fleet in North America's West Arctic"</a> (PDF). Arctic. 37 (4): 528–532. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.14430%2Farctic2234">10.14430/arctic2234</a>. Archived from <a rel="nofollow" class="external text" href="http://pubs.aina.ucalgary.ca/arctic/Arctic37-4-528.pdf">the original</a> (PDF) on 3 March 2016. Retrieved 15 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Arctic&rft.atitle=From+Davis+Strait+to+Bering+Strait%3A+The+Arrival+of+the+Commercial+Whaling+Fleet+in+North+America%27s+West+Arctic&rft.volume=37&rft.issue=4&rft.pages=528-532&rft.date=1984-12&rft_id=info%3Adoi%2F10.14430%2Farctic2234&rft.au=Bockstoce%2C+J.&rft_id=http%3A%2F%2Fpubs.aina.ucalgary.ca%2Farctic%2FArctic37-4-528.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-estes2-238"><a href="#cite_ref-estes2_238-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEstes,_J.2006" class="citation book cs1">Estes, J. (2006). <a rel="nofollow" class="external text" href="https://archive.org/details/whaleswhalingoce00este_846">Whales, Whaling, and Ocean Ecosystems</a>. University of California Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/whaleswhalingoce00este_846/page/n345">329</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-520-24884-7" title="Special:BookSources/978-0-520-24884-7"><bdi>978-0-520-24884-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Whales%2C+Whaling%2C+and+Ocean+Ecosystems&rft.pages=329&rft.pub=University+of+California+Press&rft.date=2006&rft.isbn=978-0-520-24884-7&rft.au=Estes%2C+J.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fwhaleswhalingoce00este_846&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-whiteheadwhaling-239">^ <a href="#cite_ref-whiteheadwhaling_239-0">a</a> <a href="#cite_ref-whiteheadwhaling_239-1">b</a> <a href="#Whitehead">Whitehead</a>, pp. 13–21 </li> <li id="cite_note-240"><a href="#cite_ref-240">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStackpole,_E._A.1972" class="citation book cs1">Stackpole, E. A. (1972). Whales & Destiny: The Rivalry between America, France, and Britain for Control of the Southern Whale Fishery, 1785–1825. The <a href="/wiki/University_of_Massachusetts_Press" title="University of Massachusetts Press">University of Massachusetts Press</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-87023-104-9" title="Special:BookSources/978-0-87023-104-9"><bdi>978-0-87023-104-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Whales+%26+Destiny%3A+The+Rivalry+between+America%2C+France%2C+and+Britain+for+Control+of+the+Southern+Whale+Fishery%2C+1785%E2%80%931825&rft.pub=The+University+of+Massachusetts+Press&rft.date=1972&rft.isbn=978-0-87023-104-9&rft.au=Stackpole%2C+E.+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-241"><a href="#cite_ref-241">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBaldwin,_R.Gallagher,_M.van_Waerebeek,_K." class="citation web cs1">Baldwin, R.; Gallagher, M. & van Waerebeek, K. <a rel="nofollow" class="external text" href="http://www.vliz.be/imisdocs/publications/243252.pdf">"A Review of Cetaceans from Waters off the Arabian Peninsula"</a> (PDF). p. 6. Retrieved 15 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=A+Review+of+Cetaceans+from+Waters+off+the+Arabian+Peninsula&rft.pages=6&rft.au=Baldwin%2C+R.&rft.au=Gallagher%2C+M.&rft.au=van+Waerebeek%2C+K.&rft_id=http%3A%2F%2Fwww.vliz.be%2Fimisdocs%2Fpublications%2F243252.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-242"><a href="#cite_ref-242">^</a> <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.bbc.co.uk/dna/h2g2/classic/A671492">"The Wreck of the Whaleship Essex"</a>. BBC. Retrieved 11 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Wreck+of+the+Whaleship+Essex&rft.pub=BBC&rft_id=https%3A%2F%2Fwww.bbc.co.uk%2Fdna%2Fh2g2%2Fclassic%2FA671492&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-243"><a href="#cite_ref-243">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDavis,_LGallman,_R.Gleiter,_K.1997" class="citation book cs1">Davis, L; Gallman, R. & Gleiter, K. (1997). In Pursuit of Leviathan: Technology, Institutions, Productivity, and Profits in American Whaling, 1816–1906 (National Bureau of Economic Research Series on Long-Term Factors in Economic Dev). University of Chicago Press. p. 135. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-13789-6" title="Special:BookSources/978-0-226-13789-6"><bdi>978-0-226-13789-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=In+Pursuit+of+Leviathan%3A+Technology%2C+Institutions%2C+Productivity%2C+and+Profits+in+American+Whaling%2C+1816%E2%80%931906+%28National+Bureau+of+Economic+Research+Series+on+Long-Term+Factors+in+Economic+Dev%29&rft.pages=135&rft.pub=University+of+Chicago+Press&rft.date=1997&rft.isbn=978-0-226-13789-6&rft.au=Davis%2C+L&rft.au=Gallman%2C+R.&rft.au=Gleiter%2C+K.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-244"><a href="#cite_ref-244">^</a> Over 680,000 officially reported at <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/20191015053920/http://luna.pos.to/whale/sta.html">"Whaling Statistics"</a>. Archived from <a rel="nofollow" class="external text" href="http://luna.pos.to/whale/sta.html">the original</a> on 15 October 2019. Retrieved 15 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Whaling+Statistics&rft_id=http%3A%2F%2Fluna.pos.to%2Fwhale%2Fsta.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988">. In addition, studies have found that official reports understated USSR catches by at least 89,000 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.nmfs.noaa.gov/pr/pdfs/sars/po2007whsp-cow.pdf">"Sperm Whale (Physeter macrocephalus) California/Oregon/Washington Stock"</a> (PDF). Retrieved 16 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sperm+Whale+%28Physeter+macrocephalus%29+California%2FOregon%2FWashington+Stock&rft_id=http%3A%2F%2Fwww.nmfs.noaa.gov%2Fpr%2Fpdfs%2Fsars%2Fpo2007whsp-cow.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> Furthermore, other countries, such as Japan, have been found to have understated catches. <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/20081007174536/http://www.wdcs.org/submissions_bin/rmsreview.pdf">"The RMS – A Question of Confidence: Manipulations and Falsifications in Whaling"</a> (PDF). Archived from <a rel="nofollow" class="external text" href="http://www.wdcs.org/submissions_bin/rmsreview.pdf">the original</a> (PDF) on 7 October 2008. Retrieved 16 October 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+RMS+%E2%80%93+A+Question+of+Confidence%3A+Manipulations+and+Falsifications+in+Whaling&rft_id=http%3A%2F%2Fwww.wdcs.org%2Fsubmissions_bin%2Frmsreview.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-245"><a href="#cite_ref-245">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLavery,_Trish_L.Ben_RoudnewPeter_GillJustin_Seymour2010" class="citation journal cs1">Lavery, Trish L.; Ben Roudnew; Peter Gill; Justin Seymour; Laurent Seuront; Genevieve Johnson; James G. Mitchell & Victor Smetacek (2010). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2982231">"Iron defecation by sperm whales stimulates carbon export in the Southern Ocean"</a>. <a href="/wiki/Proceedings_of_the_Royal_Society_B" class="mw-redirect" title="Proceedings of the Royal Society B">Proceedings of the Royal Society B</a>. 277 (1699): 3527–3531. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frspb.2010.0863">10.1098/rspb.2010.0863</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2982231">2982231</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/20554546">20554546</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings+of+the+Royal+Society+B&rft.atitle=Iron+defecation+by+sperm+whales+stimulates+carbon+export+in+the+Southern+Ocean&rft.volume=277&rft.issue=1699&rft.pages=3527-3531&rft.date=2010&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2982231%23id-name%3DPMC&rft_id=info%3Apmid%2F20554546&rft_id=info%3Adoi%2F10.1098%2Frspb.2010.0863&rft.au=Lavery%2C+Trish+L.&rft.au=Ben+Roudnew&rft.au=Peter+Gill&rft.au=Justin+Seymour&rft.au=Laurent+Seuront&rft.au=Genevieve+Johnson&rft.au=James+G.+Mitchell&rft.au=Victor+Smetacek&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2982231&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-whiteheadghosts-246"><a href="#cite_ref-whiteheadghosts_246-0">^</a> <a href="#Whitehead">Whitehead</a>, pp. 360–362 </li> <li id="cite_note-247"><a href="#cite_ref-247">^</a> <a href="#Whitehead">Whitehead</a>, pp. 362–368 </li> <li id="cite_note-248"><a href="#cite_ref-248">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://ecos.fws.gov/ecp/species/A02T">"Sperm whale (Physeter catodon) species profile"</a>. 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As amended by the Conference of the Parties in 1985, 1988, 1991, 1994, 1997, 1999, 2002, 2005 and 2008. Effective: 5 March 2009. </li> <li id="cite_note-250"><a href="#cite_ref-250">^</a> <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/20121104003806/https://collections.tepapa.govt.nz/search.aspx?term=Rei%20puta">"Museum of New Zealand Te Papa Tongarewa Collections Online Search – Rei puta"</a>. 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The Guardian. 30 March 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Guardian&rft.atitle=Whales+are+starving+%E2%80%93+their+stomachs+full+of+our+plastic+waste+%26%23124%3B+Philip+Hoare&rft.date=2016-03-30&rft_id=http%3A%2F%2Fwww.theguardian.com%2Fcommentisfree%2F2016%2Fmar%2F30%2Fplastic-debris-killing-sperm-whales&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-264"><a href="#cite_ref-264">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://news.google.com/newspapers?id=nYBPAAAAIBAJ&sjid=lCQEAAAAIBAJ&pg=5390,3277095">"The Times-News - Google News Archive Search"</a>. news.google.com.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=news.google.com&rft.atitle=The+Times-News+-+Google+News+Archive+Search&rft_id=https%3A%2F%2Fnews.google.com%2Fnewspapers%3Fid%3DnYBPAAAAIBAJ%26sjid%3DlCQEAAAAIBAJ%26pg%3D5390%2C3277095&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> <li id="cite_note-265"><a href="#cite_ref-265">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJacobsenMasseyGulland2010" class="citation journal cs1">Jacobsen, Jeff K.; Massey, Liam; Gulland, Frances (May 2010). "Fatal ingestion of floating net debris by two sperm whales (Physeter macrocephalus)". Marine Pollution Bulletin. 60 (5): 765–767. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2010MarPB..60..765J">2010MarPB..60..765J</a>. <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%2Fj.marpolbul.2010.03.008">10.1016/j.marpolbul.2010.03.008</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/20381092">20381092</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Marine+Pollution+Bulletin&rft.atitle=Fatal+ingestion+of+floating+net+debris+by+two+sperm+whales+%28Physeter+macrocephalus%29&rft.volume=60&rft.issue=5&rft.pages=765-767&rft.date=2010-05&rft_id=info%3Apmid%2F20381092&rft_id=info%3Adoi%2F10.1016%2Fj.marpolbul.2010.03.008&rft_id=info%3Abibcode%2F2010MarPB..60..765J&rft.aulast=Jacobsen&rft.aufirst=Jeff+K.&rft.au=Massey%2C+Liam&rft.au=Gulland%2C+Frances&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2></div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="Whitehead" class="citation book cs1">Whitehead, H. (2003). <a rel="nofollow" class="external text" href="https://archive.org/details/spermwhalessocia0000whit/page/4">Sperm Whales: Social Evolution in the Ocean</a>. Chicago: University of Chicago Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/spermwhalessocia0000whit/page/4">4</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-89518-5" title="Special:BookSources/978-0-226-89518-5"><bdi>978-0-226-89518-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Sperm+Whales%3A+Social+Evolution+in+the+Ocean&rft.place=Chicago&rft.pages=4&rft.pub=University+of+Chicago+Press&rft.date=2003&rft.isbn=978-0-226-89518-5&rft.au=Whitehead%2C+H.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fspermwhalessocia0000whit%2Fpage%2F4&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="Perrin" class="citation book cs1">Perrin, William F.; Würsig, Bernd; Thewissen, J.G.M., eds. (2002). <a rel="nofollow" class="external text" href="https://archive.org/details/encyclopediaofma2002unse">Encyclopedia of Marine Mammals</a>. San Diego, Calif.: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-551340-1" title="Special:BookSources/978-0-12-551340-1"><bdi>978-0-12-551340-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Encyclopedia+of+Marine+Mammals&rft.place=San+Diego%2C+Calif.&rft.pub=Academic+Press&rft.date=2002&rft.isbn=978-0-12-551340-1&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fencyclopediaofma2002unse&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarwardine,_HoytFordyceGill1998" class="citation book cs1">Carwardine, Hoyt; Fordyce & Gill (1998). Whales & Dolphins: The Ultimate Guide to Marine Mammals. London: HarperCollins. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-00-220105-6" title="Special:BookSources/978-0-00-220105-6"><bdi>978-0-00-220105-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Whales+%26+Dolphins%3A+The+Ultimate+Guide+to+Marine+Mammals&rft.place=London&rft.pub=HarperCollins&rft.date=1998&rft.isbn=978-0-00-220105-6&rft.au=Carwardine%2C+Hoyt&rft.au=Fordyce&rft.au=Gill&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASperm+whale" class="Z3988"></li> <li>Heptner, V. G.; Nasimovich, A. A; Bannikov, Andrei Grigorevich; Hoffmann, Robert S, <a rel="nofollow" class="external text" href="https://archive.org/details/mammalsofsov231996gept">Mammals of the Soviet Union</a>, Volume II, part 3 (1996). Washington, D.C.: Smithsonian Institution Libraries and National Science Foundation</li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output 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srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/51px-Wikispecies-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikispecies-logo.svg/68px-Wikispecies-logo.svg.png 2x" data-file-width="941" data-file-height="1103" /></div> <div class="side-box-text plainlist"><a href="/wiki/Wikispecies" title="Wikispecies">Wikispecies</a> has information related to <a href="https://species.wikimedia.org/wiki/Physeter_macrocephalus" class="extiw" title="wikispecies:Physeter macrocephalus">Physeter macrocephalus</a>.</div></div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1235681985"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1237033735"><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"> <div class="side-box-flex"> <div class="side-box-image"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/38px-Wikisource-logo.svg.png" decoding="async" width="38" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/57px-Wikisource-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/76px-Wikisource-logo.svg.png 2x" data-file-width="410" data-file-height="430" /></div> <div class="side-box-text plainlist"><a href="/wiki/Wikisource" title="Wikisource">Wikisource</a> has the text of the <a href="/wiki/Encyclop%C3%A6dia_Britannica_Eleventh_Edition" title="Encyclopædia Britannica Eleventh Edition">1911 Encyclopædia Britannica</a> article "<a href="https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Sperm-Whale" class="extiw" title="wikisource:1911 Encyclopædia Britannica/Sperm-Whale">Sperm-Whale</a>".</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://thespermwhaleproject.org/">The Dominica Sperm Whale Project</a>- a long-term scientific research program focusing on the behaviour of sperm whale units.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20051231151038/http://www.candlecomfort.com/historyofcandles.html">Spermaceti in candles</a> 22 July 2007</li> <li><a rel="nofollow" class="external text" href="http://www.marinemammalscience.org/index.php?option=com_content&view=article&id=496&Itemid=313">Society for Marine Mammalogy Sperm Whale Fact Sheet</a></li> <li><a rel="nofollow" class="external text" href="http://www.nmfs.noaa.gov/pr/species/mammals/cetaceans/spermwhale.htm">US National Marine Fisheries Service Sperm Whale web page</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060214205618/http://www.70south.com/resources/antarctic-animals/whales">70South</a>—information on the sperm whale</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20070927214224/http://www.newsday.com/community/guide/lihistory/ny-history-hs9phys%2C0%2C4763989.story?coll=ny-lihostory-navigation">"Physty"-stranded sperm whale nursed back to health and released in 1981</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20050404115135/http://www.arkive.org/species/GES/mammals/Physeter_macrocephalus/">ARKive</a>—Photographs, video.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090218170542/http://www.whaletrackers.com/whales-mediterranean-sea/sperm-whales-of-greece/">Whale Trackers</a>—An online documentary film exploring the sperm whales in the Mediterranean Sea.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120402142126/http://www.cms.int/reports/small_cetaceans/data/P_macrocephalus/P_macrocephalus.htm">Convention on Migratory Species page on the sperm whale</a></li> <li><a rel="nofollow" class="external text" href="http://www.pacificcetaceans.org/">Website of the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region</a></li> <li><a rel="nofollow" class="external text" href="http://www.accobams.org/">Official website of the Agreement on the Conservation of Cetaceans in the Black Sea, Mediterranean Sea and Contiguous Atlantic Area</a></li> <li><a rel="nofollow" class="external text" href="http://www.pnas.org/cgi/content/full/98/13/7384">Retroposon analysis of major cetacean lineages: The monophyly of toothed whales and the paraphyly of river dolphins</a> 19 June 2001</li> <li><a rel="nofollow" class="external text" href="http://cetus.ucsd.edu/voicesinthesea_org/species/spermWhales/sperm.html">Voices in the Sea – sounds of the sperm whale</a></li> <li><a rel="nofollow" class="external text" href="https://abcnews.go.com/International/sperm-whales-quickly-learned-avoid-humans-hunting-19th/story?id=76466360">Sperm whales quickly learned to avoid humans who were hunting them in the 19th century, scientists say</a>. <a href="/wiki/ABC_News_(United_States)" title="ABC News (United States)">ABC News</a>. 16 March 2021.</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline 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 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href="/wiki/Cetacea" title="Cetacea">Cetacea</a> species</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li>Kingdom <a href="/wiki/Animal" title="Animal">Animalia</a></li> <li>Phylum <a href="/wiki/Chordate" title="Chordate">Chordata</a></li> <li>Class <a href="/wiki/Mammal" title="Mammal">Mammalia</a></li> <li>Infraclass <a href="/wiki/Eutheria" title="Eutheria">Eutheria</a></li> <li>Superorder <a href="/wiki/Laurasiatheria" title="Laurasiatheria">Laurasiatheria</a></li> <li>Order <a href="/wiki/Artiodactyl" title="Artiodactyl">Artiodactyla</a></li> <li>Suborder <a href="/wiki/Whippomorpha" title="Whippomorpha">Whippomorpha</a></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="Parvorder_Mysticeti_(Baleen_whales)" style="font-size:114%;margin:0 4em">Parvorder <a href="/wiki/Baleen_whale" title="Baleen whale">Mysticeti (Baleen whales)</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/Balaenidae" title="Balaenidae">Balaenidae</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:9em"><a href="/wiki/Bowhead_whale" title="Bowhead whale">Balaena</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bowhead_whale" title="Bowhead whale">Bowhead whale (B. mysticetus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Right_whale" title="Right whale">Eubalaena</a> (Right whales)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Southern_right_whale" title="Southern right whale">Southern right whale (E. australis)</a></li> <li><a href="/wiki/North_Atlantic_right_whale" title="North Atlantic right whale">North Atlantic right whale (E. glacialis)</a></li> <li><a href="/wiki/North_Pacific_right_whale" title="North Pacific right whale">North Pacific right whale (E. japonica)</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/Rorqual" title="Rorqual">Balaenopteridae</a> (Rorquals)</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:9em"><a href="/wiki/Balaenoptera" title="Balaenoptera">Balaenoptera</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Common_minke_whale" title="Common minke whale">Common minke whale (B. acutorostrata)</a></li> <li><a href="/wiki/Antarctic_minke_whale" title="Antarctic minke whale">Antarctic minke whale (B. bonaerensis)</a></li> <li><a href="/wiki/Sei_whale" title="Sei whale">Sei whale (B. borealis)</a></li> <li><a href="/wiki/Bryde%27s_whale" title="Bryde's whale">Bryde's whale (B. brydei)</a></li> <li><a href="/wiki/Bryde%27s_whale" title="Bryde's whale">Pygmy Bryde's whale (B. edeni)</a></li> <li><a href="/wiki/Blue_whale" title="Blue whale">Blue whale (B. musculus)</a></li> <li><a href="/wiki/Omura%27s_whale" title="Omura's whale">Omura's whale (B. omurai)</a></li> <li><a href="/wiki/Fin_whale" title="Fin whale">Fin whale (B. physalus)</a></li> <li><a href="/wiki/Rice%27s_whale" title="Rice's whale">Rice's whale (B. ricei)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Gray_whale" title="Gray whale">Eschrichtius</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Gray_whale" title="Gray whale">Gray whale (E. robustus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Humpback_whale" title="Humpback whale">Megaptera</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Humpback_whale" title="Humpback whale">Humpback whale (M. novaeangliae)</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/Cetotheriidae" title="Cetotheriidae">Cetotheriidae</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="Caperea" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Pygmy_right_whale" title="Pygmy right whale">Caperea</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pygmy_right_whale" title="Pygmy right whale">Pygmy right whale (C. marginata)</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="Parvorder_Odontoceti_(Toothed_whales)" style="font-size:114%;margin:0 4em">Parvorder <a href="/wiki/Toothed_whale" title="Toothed whale">Odontoceti (Toothed whales)</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/Oceanic_dolphin" title="Oceanic dolphin">Delphinidae</a> (Oceanic dolphins)</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:9em"><a href="/wiki/Cephalorhynchus" title="Cephalorhynchus">Cephalorhynchus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Commerson%27s_dolphin" title="Commerson's dolphin">Commerson's dolphin (C. commersonii)</a></li> <li><a href="/wiki/Chilean_dolphin" title="Chilean dolphin">Chilean dolphin (C. eutropia)</a></li> <li><a href="/wiki/Heaviside%27s_dolphin" title="Heaviside's dolphin">Heaviside's dolphin (C. heavisidii)</a></li> <li><a href="/wiki/Hector%27s_dolphin" title="Hector's dolphin">Hector's dolphin (C. hectori)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Common_dolphin" title="Common dolphin">Delphinus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Common_dolphin" title="Common dolphin">Common dolphin (D. delphis)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Pygmy_killer_whale" title="Pygmy killer whale">Feresa</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pygmy_killer_whale" title="Pygmy killer whale">Pygmy killer whale (F. attenuata)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Pilot_whale" title="Pilot whale">Globicephala</a> (Pilot whales)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Short-finned_pilot_whale" title="Short-finned pilot whale">Short-finned pilot whale (G. macrorhynchus)</a></li> <li><a href="/wiki/Long-finned_pilot_whale" title="Long-finned pilot whale">Long-finned pilot whale (G. melas)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Risso%27s_dolphin" title="Risso's dolphin">Grampus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Risso%27s_dolphin" title="Risso's dolphin">Risso's dolphin (G. griseus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Fraser%27s_dolphin" title="Fraser's dolphin">Lagenodelphis</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Fraser%27s_dolphin" title="Fraser's dolphin">Fraser's dolphin (L. hosei)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Lagenorhynchus" title="Lagenorhynchus">Lagenorhynchus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/White-beaked_dolphin" title="White-beaked dolphin">White-beaked dolphin (L. albirostris)</a></li> <li><a href="/wiki/Atlantic_white-sided_dolphin" title="Atlantic white-sided dolphin">Atlantic white-sided dolphin (L. acutus)</a></li> <li><a href="/wiki/Peale%27s_dolphin" title="Peale's dolphin">Peale's dolphin (L. australis)</a></li> <li><a href="/wiki/Hourglass_dolphin" title="Hourglass dolphin">Hourglass dolphin (L. cruciger)</a></li> <li><a href="/wiki/Pacific_white-sided_dolphin" title="Pacific white-sided dolphin">Pacific white-sided dolphin (L. obliquidens)</a></li> <li><a href="/wiki/Dusky_dolphin" title="Dusky dolphin">Dusky dolphin (L. obscurus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Right_whale_dolphin" title="Right whale dolphin">Lissodelphis</a> (Right whale dolphins)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Northern_right_whale_dolphin" title="Northern right whale dolphin">Northern right whale dolphin (L. borealis)</a></li> <li><a href="/wiki/Southern_right_whale_dolphin" title="Southern right whale dolphin">Southern right whale dolphin (L. peronii)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Orcaella" title="Orcaella">Orcaella</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Irrawaddy_dolphin" title="Irrawaddy dolphin">Irrawaddy dolphin (O. brevirostris)</a></li> <li><a href="/wiki/Australian_snubfin_dolphin" title="Australian snubfin dolphin">Australian snubfin dolphin (O. heinsohni)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Orcinus" title="Orcinus">Orcinus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Orca" title="Orca">Orca or killer whale (O. orca)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Melon-headed_whale" title="Melon-headed whale">Peponocephala</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Melon-headed_whale" title="Melon-headed whale">Melon-headed whale (P. electra)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/False_killer_whale" title="False killer whale">Pseudorca</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/False_killer_whale" title="False killer whale">False killer whale (P. crassidens)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Sotalia_(genus)" class="mw-redirect" title="Sotalia (genus)">Sotalia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Tucuxi" title="Tucuxi">Tucuxi (S. fluviatilis)</a></li> <li><a href="/wiki/Guiana_dolphin" title="Guiana dolphin">Guiana dolphin (S. guianensis)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Humpback_dolphin" title="Humpback dolphin">Sousa</a> (Humpback dolphins)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Indo-Pacific_humpback_dolphin" title="Indo-Pacific humpback dolphin">Indo-Pacific humpback dolphin (S. chinensis)</a></li> <li><a href="/wiki/Indian_Ocean_humpback_dolphin" title="Indian Ocean humpback dolphin">Indian Ocean humpback dolphin (S. plumbea)</a></li> <li><a href="/wiki/Australian_humpback_dolphin" title="Australian humpback dolphin">Australian humpback dolphin (S. sahulensis)</a></li> <li><a href="/wiki/Atlantic_humpback_dolphin" title="Atlantic humpback dolphin">Atlantic humpback dolphin (S. teuszii)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Stenella" title="Stenella">Stenella</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pantropical_spotted_dolphin" title="Pantropical spotted dolphin">Pantropical spotted dolphin (S. attenuata)</a></li> <li><a href="/wiki/Clymene_dolphin" title="Clymene dolphin">Clymene dolphin (S. clymene)</a></li> <li><a href="/wiki/Striped_dolphin" title="Striped dolphin">Striped dolphin (S. coeruleoalba)</a></li> <li><a href="/wiki/Atlantic_spotted_dolphin" title="Atlantic spotted dolphin">Atlantic spotted dolphin (S. frontalis)</a></li> <li><a href="/wiki/Spinner_dolphin" title="Spinner dolphin">Spinner dolphin (S. longirostris)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Rough-toothed_dolphin" title="Rough-toothed dolphin">Steno</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Rough-toothed_dolphin" title="Rough-toothed dolphin">Rough-toothed dolphin (S. bredanensis)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Bottlenose_dolphin" title="Bottlenose dolphin">Tursiops</a> (Bottlenose dolphins)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Indo-Pacific_bottlenose_dolphin" title="Indo-Pacific bottlenose dolphin">Indo-Pacific bottlenose dolphin (T. aduncus)</a></li> <li><a href="/wiki/Burrunan_dolphin" title="Burrunan dolphin">Burrunan dolphin (T. australis)</a></li> <li><a href="/wiki/Tamanend%27s_bottlenose_dolphin" title="Tamanend's bottlenose dolphin">Tamanend's bottlenose dolphin (T. erebennus)</a></li> <li><a href="/wiki/Common_bottlenose_dolphin" title="Common bottlenose dolphin">Common bottlenose dolphin (T. truncatus)</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/Monodontidae" title="Monodontidae">Monodontidae</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:9em"><a href="/wiki/Beluga_whale" title="Beluga whale">Delphinapterus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Beluga_whale" title="Beluga whale">Beluga whale (D. leucas)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Narwhal" title="Narwhal">Monodon</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Narwhal" title="Narwhal">Narwhal (M. monoceros)</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/Porpoise" title="Porpoise">Phocoenidae</a> (Porpoises)</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:9em"><a href="/wiki/Finless_porpoise" title="Finless porpoise">Neophocoena</a> (Finless porpoises)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Indo-Pacific_finless_porpoise" title="Indo-Pacific finless porpoise">Indo-Pacific finless porpoise (N. phocaenoides)</a></li> <li><a href="/wiki/Yangtze_finless_porpoise" title="Yangtze finless porpoise">Yangtze finless porpoise (N. asiaeorientalis)</a></li> <li><a href="/wiki/East_Asian_finless_porpoise" title="East Asian finless porpoise">East Asian finless porpoise (N. sunameri)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Phocoena" title="Phocoena">Phocoena</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Spectacled_porpoise" title="Spectacled porpoise">Spectacled porpoise (P. dioptrica)</a></li> <li><a href="/wiki/Harbour_porpoise" title="Harbour porpoise">Harbour porpoise (P. phocoena)</a></li> <li><a href="/wiki/Vaquita" title="Vaquita">Vaquita (P. sinus)</a></li> <li><a href="/wiki/Burmeister%27s_porpoise" title="Burmeister's porpoise">Burmeister's porpoise (P. spinipinnis)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Dall%27s_porpoise" title="Dall's porpoise">Phocoenoides</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dall%27s_porpoise" title="Dall's porpoise">Dall's porpoise (P. dalli)</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/Physeteroidea" title="Physeteroidea">Physeteridae</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="Physeter" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Physeter" title="Physeter">Physeter</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Sperm whale (P. macrocephalus)</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/Kogiidae" title="Kogiidae">Kogiidae</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="Kogia" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Kogia" title="Kogia">Kogia</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pygmy_sperm_whale" title="Pygmy sperm whale">Pygmy sperm whale (K. breviceps)</a></li> <li><a href="/wiki/Dwarf_sperm_whale" title="Dwarf sperm whale">Dwarf sperm whale (K. simus)</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/Iniidae" title="Iniidae">Iniidae</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="Inia" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Inia" title="Inia">Inia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Araguaian_river_dolphin" title="Araguaian river dolphin">Araguaian river dolphin (I. araguaiaensis)</a></li> <li><a href="/wiki/Bolivian_river_dolphin" title="Bolivian river dolphin">Bolivian river dolphin (I. boliviensis)</a></li> <li><a href="/wiki/Amazon_river_dolphin" title="Amazon river dolphin">Amazon river dolphin (I. geoffrensis)</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/Lipotidae" title="Lipotidae">Lipotidae</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="Lipotes" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Baiji" title="Baiji">Lipotes</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Baiji" title="Baiji">Baiji (L. vexillifer)</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/Platanistidae" title="Platanistidae">Platanistidae</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="Platanista" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/South_Asian_river_dolphin" title="South Asian river dolphin">Platanista</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ganges_river_dolphin" title="Ganges river dolphin">Ganges river dolphin (P. gangetica)</a></li> <li><a href="/wiki/Indus_river_dolphin" title="Indus river dolphin">Indus river dolphin (P. minor)</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/La_Plata_dolphin" title="La Plata dolphin">Pontoporiidae</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="Pontoporia" scope="row" class="navbox-group" style="width:9em"><a href="/wiki/La_Plata_dolphin" title="La Plata dolphin">Pontoporia</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/La_Plata_dolphin" title="La Plata dolphin">La Plata dolphin (P. blainvillei)</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/Beaked_whale" title="Beaked whale">Ziphiidae</a> (Beaked whales)</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:9em"><a href="/wiki/Berardius" title="Berardius">Berardius</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arnoux%27s_beaked_whale" title="Arnoux's beaked whale">Arnoux's beaked whale (B. arnuxii)</a></li> <li><a href="/wiki/Baird%27s_beaked_whale" title="Baird's beaked whale">Baird's beaked whale (B. bairdii)</a></li> <li><a href="/wiki/Sato%27s_beaked_whale" title="Sato's beaked whale">Sato's beaked whale (B. minimus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Bottlenose_whale" title="Bottlenose whale">Hyperoodon</a> (Bottlenose whales)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Northern_bottlenose_whale" title="Northern bottlenose whale">Northern bottlenose whale (H. ampullatus)</a></li> <li><a href="/wiki/Southern_bottlenose_whale" title="Southern bottlenose whale">Southern bottlenose whale (H. planifrons)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Tropical_bottlenose_whale" title="Tropical bottlenose whale">Indopacetus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Tropical_bottlenose_whale" title="Tropical bottlenose whale">Tropical bottlenose whale (I. pacificus)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Mesoplodont_whale" class="mw-redirect" title="Mesoplodont whale">Mesoplodon</a> (Mesoplodont whales)</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Sowerby%27s_beaked_whale" title="Sowerby's beaked whale">Sowerby's beaked whale (M. bidens)</a></li> <li><a href="/wiki/Andrews%27_beaked_whale" title="Andrews' beaked whale">Andrews' beaked whale (M. bowdoini)</a></li> <li><a href="/wiki/Hubbs%27_beaked_whale" title="Hubbs' beaked whale">Hubbs' beaked whale (M. carlhubbsi)</a></li> <li><a href="/wiki/Blainville%27s_beaked_whale" title="Blainville's beaked whale">Blainville's beaked whale (M. densirostris)</a></li> <li><a href="/wiki/Ramari%27s_beaked_whale" title="Ramari's beaked whale">Ramari's beaked whale (M. eueu)</a></li> <li><a href="/wiki/Gervais%27s_beaked_whale" title="Gervais's beaked whale">Gervais's beaked whale (M. europaeus)</a></li> <li><a href="/wiki/Ginkgo-toothed_beaked_whale" title="Ginkgo-toothed beaked whale">Ginkgo-toothed beaked whale (M. ginkgodens)</a></li> <li><a href="/wiki/Gray%27s_beaked_whale" title="Gray's beaked whale">Gray's beaked whale (M. grayi)</a></li> <li><a href="/wiki/Hector%27s_beaked_whale" title="Hector's beaked whale">Hector's beaked whale (M. hectori)</a></li> <li><a href="/wiki/Deraniyagala%27s_beaked_whale" title="Deraniyagala's beaked whale">Deraniyagala's beaked whale (M. hotaula)</a></li> <li><a href="/wiki/Strap-toothed_whale" title="Strap-toothed whale">Strap-toothed whale (M. layardii)</a></li> <li><a href="/wiki/True%27s_beaked_whale" title="True's beaked whale">True's beaked whale (M. mirus)</a></li> <li><a href="/wiki/Perrin%27s_beaked_whale" title="Perrin's beaked whale">Perrin's beaked whale (M. perrini)</a></li> <li><a href="/wiki/Pygmy_beaked_whale" title="Pygmy beaked whale">Pygmy beaked whale (M. peruvianus)</a></li> <li><a href="/wiki/Stejneger%27s_beaked_whale" title="Stejneger's beaked whale">Stejneger's beaked whale (M. stejnegeri)</a></li> <li><a href="/wiki/Spade-toothed_whale" title="Spade-toothed whale">Spade-toothed whale (M. traversii)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Shepherd%27s_beaked_whale" title="Shepherd's beaked whale">Tasmacetus</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Shepherd%27s_beaked_whale" title="Shepherd's beaked whale">Shepherd's beaked whale (T. shepherdi)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:9em"><a href="/wiki/Cuvier%27s_beaked_whale" title="Cuvier's beaked whale">Ziphius </a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cuvier%27s_beaked_whale" title="Cuvier's beaked whale">Cuvier's beaked whale (Z. cavirostris)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></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="Taxon_identifiers" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Taxon_identifiers" style="font-size:114%;margin:0 4em"><a href="/wiki/Help:Taxon_identifiers" title="Help:Taxon identifiers">Taxon identifiers</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: left;">Physeter macrocephalus</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/Wikidata" title="Wikidata">Wikidata</a>: <a href="https://www.wikidata.org/wiki/Q81214" class="extiw" title="wikidata:Q81214">Q81214</a></li> <li><a href="/wiki/Wikispecies" title="Wikispecies">Wikispecies</a>: <a href="https://species.wikimedia.org/wiki/Physeter_macrocephalus" class="extiw" title="wikispecies:Physeter macrocephalus">Physeter macrocephalus</a></li> <li><a href="/wiki/Animal_Diversity_Web" title="Animal Diversity Web">ADW</a>: <a rel="nofollow" class="external text" href="https://animaldiversity.org/accounts/Physeter_catodon/">Physeter_catodon</a></li> <li><a href="/wiki/Australian_Faunal_Directory" title="Australian Faunal Directory">AFD</a>: <a rel="nofollow" class="external text" href="https://biodiversity.org.au/afd/taxa/Physeter_macrocephalus">Physeter_macrocephalus</a></li> <li><a href="/wiki/ARKive" title="ARKive">ARKive</a>: <a rel="nofollow" class="external text" href="https://web.archive.org/web/*/http://www.arkive.org/wd/physeter-macrocephalus/">physeter-macrocephalus</a></li> <li>BioLib: <a rel="nofollow" class="external text" href="https://www.biolib.cz/en/taxon/id20872">20872</a></li> <li><a href="/wiki/Catalogue_of_Life" title="Catalogue of Life">CoL</a>: <a rel="nofollow" class="external text" href="https://www.catalogueoflife.org/data/taxon/4HH4H">4HH4H</a></li> <li><a href="/wiki/Convention_on_the_Conservation_of_Migratory_Species_of_Wild_Animals" title="Convention on the Conservation of Migratory Species of Wild Animals">CMS</a>: <a rel="nofollow" class="external text" href="https://www.cms.int/en/species/physeter-macrocephalus">physeter-macrocephalus</a></li> <li><a href="/wiki/Encyclopedia_of_Life" title="Encyclopedia of Life">EoL</a>: <a rel="nofollow" class="external text" href="https://eol.org/pages/46559363">46559363</a></li> <li><a href="/wiki/EPPO_Code" title="EPPO Code">EPPO</a>: <a rel="nofollow" class="external text" href="https://gd.eppo.int/taxon/QHYSMA">QHYSMA</a></li> <li><a href="/wiki/European_Nature_Information_System" class="mw-redirect" title="European Nature Information System">EUNIS</a>: <a rel="nofollow" class="external text" href="https://eunis.eea.europa.eu/species/8362">8362</a></li> <li><a href="/wiki/Global_Biodiversity_Information_Facility" title="Global Biodiversity Information Facility">GBIF</a>: <a rel="nofollow" class="external text" href="https://www.gbif.org/species/2440350">2440350</a></li> <li><a href="/wiki/INaturalist" title="INaturalist">iNaturalist</a>: <a rel="nofollow" class="external text" href="https://inaturalist.org/taxa/74890">74890</a></li> <li><a href="/wiki/Interim_Register_of_Marine_and_Nonmarine_Genera" title="Interim Register of Marine and Nonmarine Genera">IRMNG</a>: <a rel="nofollow" class="external text" href="https://www.irmng.org/aphia.php?p=taxdetails&id=10839599">10839599</a></li> <li><a href="/wiki/Integrated_Taxonomic_Information_System" title="Integrated Taxonomic Information System">ITIS</a>: <a rel="nofollow" class="external text" href="https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=180488">180488</a></li> <li><a href="/wiki/IUCN_Red_List" title="IUCN Red List">IUCN</a>: <a rel="nofollow" class="external text" href="https://apiv3.iucnredlist.org/api/v3/taxonredirect/41755">41755</a></li> <li><a href="/wiki/American_Society_of_Mammalogists#Mammal_Diversity_Database" title="American Society of Mammalogists">MDD</a>: <a rel="nofollow" class="external text" href="https://www.mammaldiversity.org/taxon/1006461">1006461</a></li> <li><a href="/wiki/NatureServe" title="NatureServe">NatureServe</a>: <a rel="nofollow" class="external text" href="https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.101043/">2.101043</a></li> <li><a href="/wiki/National_Biodiversity_Network" title="National Biodiversity Network">NBN</a>: <a rel="nofollow" class="external text" href="https://data.nbn.org.uk/Taxa/NBNSYS0000163066">NBNSYS0000163066</a></li> <li><a href="/wiki/National_Marine_Fisheries_Service" title="National Marine Fisheries Service">NOAA</a>: <a rel="nofollow" class="external text" href="https://www.fisheries.noaa.gov/species/sperm-whale">sperm-whale</a></li> <li>NZOR: <a rel="nofollow" class="external text" href="https://www.nzor.org.nz/names/41e0611b-3336-4c17-bed5-58926512b86a">41e0611b-3336-4c17-bed5-58926512b86a</a></li> <li><a href="/wiki/Observation.org" title="Observation.org">Observation.org</a>: <a rel="nofollow" class="external text" href="https://observation.org/species/1376/">1376</a></li> <li><a href="/wiki/Ocean_Biodiversity_Information_System" title="Ocean Biodiversity Information System">OBIS</a>: <a rel="nofollow" class="external text" href="https://obis.org/taxon/137119">137119</a></li> <li><a href="/wiki/Open_Tree_of_Life" title="Open Tree of Life">Open Tree of Life</a>: <a rel="nofollow" class="external text" href="https://tree.opentreeoflife.org/taxonomy/browse?id=276851">276851</a></li> <li><a href="/wiki/Paleobiology_Database" title="Paleobiology Database">Paleobiology Database</a>: <a rel="nofollow" class="external text" href="https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=68698">68698</a></li> <li><a href="/wiki/SeaLifeBase" title="SeaLifeBase">SeaLifeBase</a>: <a rel="nofollow" class="external text" href="https://www.sealifebase.ca/Summary/SpeciesSummary.php?id=68882">68882</a></li> <li><a href="/wiki/CITES" title="CITES">Species+</a>: <a rel="nofollow" class="external text" href="https://speciesplus.net/#/taxon_concepts/10761">10761</a></li> <li><a href="/wiki/World_Register_of_Marine_Species" title="World Register of Marine Species">WoRMS</a>: <a rel="nofollow" class="external text" href="https://www.marinespecies.org/aphia.php?p=taxdetails&id=137119">137119</a></li> <li><a href="/wiki/ZooBank" title="ZooBank">ZooBank</a>: <a rel="nofollow" class="external text" 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