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Fodd bynnag, dydy hyn ddim yn orfodol" class=""><span>Creu cyfrif</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Arbennig:UserLogin&returnto=Bioleg+forol" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. 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Fodd bynnag, dydy hyn ddim yn orfodol"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Creu cyfrif</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Arbennig:UserLogin&returnto=Bioleg+forol" title="Fe'ch anogir i fewngofnodi, er nad oes rhaid gwneud. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Mewngofnodi</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Tudalennau ar gyfer golygyddion allgofnodedig <a href="/wiki/Cymorth:Cyflwyniad" aria-label="Dysgu mwy am olygu"><span>dysgu mwy</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Arbennig:MyContributions" title="Rhestr golygiadau o'r cyfeiriad IP hwn [y]" accesskey="y"><span>Cyfraniadau</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Arbennig:MyTalk" title="Sgwrs ynglŷn â golygiadau o'r cyfeiriad IP hwn [n]" accesskey="n"><span>Sgwrs</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Safle"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Bioleg forol</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ewch i erthygl mewn iaith arall. Ar gael mewn 63 iaith" > <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-63" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">63 iaith</span> </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/Mariene_biologie" title="Mariene biologie - Affricaneg" lang="af" hreflang="af" data-title="Mariene biologie" data-language-autonym="Afrikaans" data-language-local-name="Affricaneg" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Bioloch%C3%ADa_marina" title="Biolochía marina - Aragoneg" lang="an" hreflang="an" data-title="Biolochía marina" data-language-autonym="Aragonés" data-language-local-name="Aragoneg" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D9%84%D9%85_%D8%A7%D9%84%D8%A3%D8%AD%D9%8A%D8%A7%D8%A1_%D8%A7%D9%84%D8%A8%D8%AD%D8%B1%D9%8A%D8%A9" title="علم الأحياء البحرية - Arabeg" lang="ar" hreflang="ar" data-title="علم الأحياء البحرية" data-language-autonym="العربية" data-language-local-name="Arabeg" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Okean_biologiyas%C4%B1" title="Okean biologiyası - Aserbaijaneg" lang="az" hreflang="az" data-title="Okean biologiyası" data-language-autonym="Azərbaycanca" data-language-local-name="Aserbaijaneg" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%9E%D0%BA%D0%B5%D0%B0%D0%BD_%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F%D2%BB%D1%8B" title="Океан биологияһы - Bashcorteg" lang="ba" hreflang="ba" data-title="Океан биологияһы" data-language-autonym="Башҡортса" data-language-local-name="Bashcorteg" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%91%D1%96%D1%8F%D0%BB%D0%BE%D0%B3%D1%96%D1%8F_%D0%B0%D0%BA%D1%96%D1%8F%D0%BD%D0%B0" title="Біялогія акіяна - Belarwseg" lang="be" hreflang="be" data-title="Біялогія акіяна" data-language-autonym="Беларуская" data-language-local-name="Belarwseg" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%BE%D1%80%D1%81%D0%BA%D0%B0_%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F" title="Морска биология - Bwlgareg" lang="bg" hreflang="bg" data-title="Морска биология" data-language-autonym="Български" data-language-local-name="Bwlgareg" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Biologia_marina" title="Biologia marina - Catalaneg" lang="ca" hreflang="ca" data-title="Biologia marina" data-language-autonym="Català" data-language-local-name="Catalaneg" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/H%C4%81i-i%C3%B2ng_S%C4%95ng-%C5%ADk-h%C5%8Fk" title="Hāi-iòng Sĕng-ŭk-hŏk - Mindong" lang="cdo" hreflang="cdo" data-title="Hāi-iòng Sĕng-ŭk-hŏk" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Marinbiologi" title="Marinbiologi - Daneg" lang="da" hreflang="da" data-title="Marinbiologi" data-language-autonym="Dansk" data-language-local-name="Daneg" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Meeresbiologie" title="Meeresbiologie - Almaeneg" lang="de" hreflang="de" data-title="Meeresbiologie" data-language-autonym="Deutsch" data-language-local-name="Almaeneg" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Marine_biology" title="Marine biology - Saesneg" lang="en" hreflang="en" data-title="Marine biology" data-language-autonym="English" data-language-local-name="Saesneg" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Marbiologio" title="Marbiologio - Esperanto" lang="eo" hreflang="eo" data-title="Marbiologio" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Biolog%C3%ADa_marina" title="Biología marina - Sbaeneg" lang="es" hreflang="es" data-title="Biología marina" data-language-autonym="Español" data-language-local-name="Sbaeneg" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Merebioloogia" title="Merebioloogia - Estoneg" lang="et" hreflang="et" data-title="Merebioloogia" data-language-autonym="Eesti" data-language-local-name="Estoneg" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Itsas_biologia" title="Itsas biologia - Basgeg" lang="eu" hreflang="eu" data-title="Itsas biologia" data-language-autonym="Euskara" data-language-local-name="Basgeg" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B2%DB%8C%D8%B3%D8%AA%E2%80%8C%D8%B4%D9%86%D8%A7%D8%B3%DB%8C_%D8%AF%D8%B1%DB%8C%D8%A7" title="زیست‌شناسی دریا - Perseg" lang="fa" hreflang="fa" data-title="زیست‌شناسی دریا" data-language-autonym="فارسی" data-language-local-name="Perseg" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Meribiologia" title="Meribiologia - Ffinneg" lang="fi" hreflang="fi" data-title="Meribiologia" data-language-autonym="Suomi" data-language-local-name="Ffinneg" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Biologie_marine" title="Biologie marine - Ffrangeg" lang="fr" hreflang="fr" data-title="Biologie marine" data-language-autonym="Français" data-language-local-name="Ffrangeg" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%91%D7%99%D7%95%D7%9C%D7%95%D7%92%D7%99%D7%94_%D7%99%D7%9E%D7%99%D7%AA" title="ביולוגיה ימית - Hebraeg" lang="he" hreflang="he" data-title="ביולוגיה ימית" data-language-autonym="עברית" data-language-local-name="Hebraeg" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A4%AE%E0%A5%81%E0%A4%A6%E0%A5%8D%E0%A4%B0%E0%A5%80_%E0%A4%9C%E0%A5%80%E0%A4%B5%E0%A4%B5%E0%A4%BF%E0%A4%9C%E0%A5%8D%E0%A4%9E%E0%A4%BE%E0%A4%A8" title="समुद्री जीवविज्ञान - Hindi" lang="hi" hreflang="hi" data-title="समुद्री जीवविज्ञान" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Morska_biologija" title="Morska biologija - Croateg" lang="hr" hreflang="hr" data-title="Morska biologija" data-language-autonym="Hrvatski" data-language-local-name="Croateg" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Biologi_kelautan" title="Biologi kelautan - Indoneseg" lang="id" hreflang="id" data-title="Biologi kelautan" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indoneseg" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sj%C3%A1varl%C3%ADffr%C3%A6%C3%B0i" title="Sjávarlíffræði - Islandeg" lang="is" hreflang="is" data-title="Sjávarlíffræði" data-language-autonym="Íslenska" data-language-local-name="Islandeg" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Biologia_marina" title="Biologia marina - Eidaleg" lang="it" hreflang="it" data-title="Biologia marina" data-language-autonym="Italiano" data-language-local-name="Eidaleg" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E7%94%9F%E7%89%A9%E6%B5%B7%E6%B4%8B%E5%AD%A6" title="生物海洋学 - Japaneeg" lang="ja" hreflang="ja" data-title="生物海洋学" data-language-autonym="日本語" data-language-local-name="Japaneeg" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Biologi_seganten" title="Biologi seganten - Jafanaeg" lang="jv" hreflang="jv" data-title="Biologi seganten" data-language-autonym="Jawa" data-language-local-name="Jafanaeg" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B8%E0%B2%BE%E0%B2%97%E0%B2%B0_%E0%B2%9C%E0%B3%80%E0%B2%B5%E0%B2%B6%E0%B2%BE%E0%B2%B8%E0%B3%8D%E0%B2%A4%E0%B3%8D%E0%B2%B0" title="ಸಾಗರ ಜೀವಶಾಸ್ತ್ರ - Kannada" lang="kn" hreflang="kn" data-title="ಸಾಗರ ಜೀವಶಾಸ್ತ್ರ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%95%B4%EC%96%91%EC%83%9D%EB%AC%BC%ED%95%99" title="해양생물학 - Coreeg" lang="ko" hreflang="ko" data-title="해양생물학" data-language-autonym="한국어" data-language-local-name="Coreeg" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Biologia_marina" title="Biologia marina - Lladin" lang="la" hreflang="la" data-title="Biologia marina" data-language-autonym="Latina" data-language-local-name="Lladin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/J%C5%ABr%C5%B3_biologija" title="Jūrų biologija - Lithwaneg" lang="lt" hreflang="lt" data-title="Jūrų biologija" data-language-autonym="Lietuvių" data-language-local-name="Lithwaneg" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/J%C5%ABras_biolo%C4%A3ija" title="Jūras bioloģija - Latfieg" lang="lv" hreflang="lv" data-title="Jūras bioloģija" data-language-autonym="Latviešu" data-language-local-name="Latfieg" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B8%E0%B4%AE%E0%B5%81%E0%B4%A6%E0%B5%8D%E0%B4%B0_%E0%B4%9C%E0%B5%80%E0%B4%B5%E0%B4%B6%E0%B4%BE%E0%B4%B8%E0%B5%8D%E0%B4%A4%E0%B5%8D%E0%B4%B0%E0%B4%82" title="സമുദ്ര ജീവശാസ്ത്രം - Malayalam" lang="ml" hreflang="ml" data-title="സമുദ്ര ജീവശാസ്ത്രം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Biologi_marin" title="Biologi marin - Maleieg" lang="ms" hreflang="ms" data-title="Biologi marin" data-language-autonym="Bahasa Melayu" data-language-local-name="Maleieg" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%D8%AF%D8%B1%DB%8C%D9%88_%D8%A8%DB%8C%D9%88%D9%84%D9%88%D8%AC%DB%8C" title="دریو بیولوجی - Masanderani" lang="mzn" hreflang="mzn" data-title="دریو بیولوجی" data-language-autonym="مازِرونی" data-language-local-name="Masanderani" class="interlanguage-link-target"><span>مازِرونی</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Mariene_biologie" title="Mariene biologie - Iseldireg" lang="nl" hreflang="nl" data-title="Mariene biologie" data-language-autonym="Nederlands" data-language-local-name="Iseldireg" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Marinbiologi" title="Marinbiologi - Norwyeg Nynorsk" lang="nn" hreflang="nn" data-title="Marinbiologi" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwyeg Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Marinbiologi" title="Marinbiologi - Norwyeg Bokmål" lang="nb" hreflang="nb" data-title="Marinbiologi" data-language-autonym="Norsk bokmål" data-language-local-name="Norwyeg Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nov mw-list-item"><a href="https://nov.wikipedia.org/wiki/Maral_biologia" title="Maral biologia - Novial" lang="nov" hreflang="nov" data-title="Maral biologia" data-language-autonym="Novial" data-language-local-name="Novial" class="interlanguage-link-target"><span>Novial</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%B3%D9%85%D9%86%D8%AF%D8%B1%D9%8A_%D8%A8%DB%8C%D9%88%D9%84%D9%88%DA%98%D9%8A" title="سمندري بیولوژي - Pashto" lang="ps" hreflang="ps" data-title="سمندري بیولوژي" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Biologia_marinha" title="Biologia marinha - Portiwgaleg" lang="pt" hreflang="pt" data-title="Biologia marinha" data-language-autonym="Português" data-language-local-name="Portiwgaleg" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Biologie_marin%C4%83" title="Biologie marină - Rwmaneg" lang="ro" hreflang="ro" data-title="Biologie marină" data-language-autonym="Română" data-language-local-name="Rwmaneg" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%91%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F_%D0%BE%D0%BA%D0%B5%D0%B0%D0%BD%D0%B0" title="Биология океана - Rwseg" lang="ru" hreflang="ru" data-title="Биология океана" data-language-autonym="Русский" data-language-local-name="Rwseg" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Marine_biology" title="Marine biology - Sgoteg" lang="sco" hreflang="sco" data-title="Marine biology" data-language-autonym="Scots" data-language-local-name="Sgoteg" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%B3%D8%A7%D9%85%D9%88%D9%86%DA%8A%D9%8A_%D8%AD%D9%8A%D8%A7%D8%AA%D9%8A%D8%A7%D8%AA" title="سامونڊي حياتيات - Sindhi" lang="sd" hreflang="sd" data-title="سامونڊي حياتيات" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Marinska_biologija" title="Marinska biologija - Serbo-Croateg" lang="sh" hreflang="sh" data-title="Marinska biologija" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croateg" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%83%E0%B6%B8%E0%B7%94%E0%B6%AF%E0%B7%8A%E2%80%8D%E0%B6%BB_%E0%B6%A2%E0%B7%93%E0%B7%80%E0%B7%80%E0%B7%9A%E0%B6%AF%E0%B6%BA" title="සමුද්‍ර ජීවවේදය - Sinhaleg" lang="si" hreflang="si" data-title="සමුද්‍ර ජීවවේදය" data-language-autonym="සිංහල" data-language-local-name="Sinhaleg" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Marine_biology" title="Marine biology - Simple English" lang="en-simple" hreflang="en-simple" data-title="Marine biology" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Morska_biologija" title="Morska biologija - Slofeneg" lang="sl" hreflang="sl" data-title="Morska biologija" data-language-autonym="Slovenščina" data-language-local-name="Slofeneg" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Morska_biologija" title="Morska biologija - Serbeg" lang="sr" hreflang="sr" data-title="Morska biologija" data-language-autonym="Српски / srpski" data-language-local-name="Serbeg" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Marinbiologi" title="Marinbiologi - Swedeg" lang="sv" hreflang="sv" data-title="Marinbiologi" data-language-autonym="Svenska" data-language-local-name="Swedeg" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AE%9F%E0%AE%B2%E0%AF%8D%E0%AE%9A%E0%AE%BE%E0%AE%B0%E0%AF%8D_%E0%AE%89%E0%AE%AF%E0%AE%BF%E0%AE%B0%E0%AE%BF%E0%AE%AF%E0%AE%B2%E0%AF%8D" title="கடல்சார் உயிரியல் - Tamileg" lang="ta" hreflang="ta" data-title="கடல்சார் உயிரியல்" data-language-autonym="தமிழ்" data-language-local-name="Tamileg" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%8A%E0%B8%B5%E0%B8%A7%E0%B8%A7%E0%B8%B4%E0%B8%97%E0%B8%A2%E0%B8%B2%E0%B8%97%E0%B8%B2%E0%B8%87%E0%B8%97%E0%B8%B0%E0%B9%80%E0%B8%A5" title="ชีววิทยาทางทะเล - Thai" lang="th" hreflang="th" data-title="ชีววิทยาทางทะเล" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Biyolohiyang_pandagat" title="Biyolohiyang pandagat - Tagalog" lang="tl" hreflang="tl" data-title="Biyolohiyang pandagat" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Deniz_biyolojisi" title="Deniz biyolojisi - Tyrceg" lang="tr" hreflang="tr" data-title="Deniz biyolojisi" data-language-autonym="Türkçe" data-language-local-name="Tyrceg" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%91%D1%96%D0%BE%D0%BB%D0%BE%D0%B3%D1%96%D1%8F_%D0%BE%D0%BA%D0%B5%D0%B0%D0%BD%D1%83" title="Біологія океану - Wcreineg" lang="uk" hreflang="uk" data-title="Біологія океану" data-language-autonym="Українська" data-language-local-name="Wcreineg" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A8%D8%AD%D8%B1%DB%8C_%D8%AD%DB%8C%D8%A7%D8%AA%DB%8C%D8%A7%D8%AA" title="بحری حیاتیات - Wrdw" lang="ur" hreflang="ur" data-title="بحری حیاتیات" data-language-autonym="اردو" data-language-local-name="Wrdw" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Sinh_h%E1%BB%8Dc_bi%E1%BB%83n" title="Sinh học biển - Fietnameg" lang="vi" hreflang="vi" data-title="Sinh học biển" data-language-autonym="Tiếng Việt" data-language-local-name="Fietnameg" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Biyolohiya_pandagat" title="Biyolohiya pandagat - Winarayeg" lang="war" hreflang="war" data-title="Biyolohiya pandagat" data-language-autonym="Winaray" data-language-local-name="Winarayeg" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E6%B5%B7%E6%B4%8B%E7%94%9F%E7%89%A9%E5%AD%A6" title="海洋生物学 - Wu Tsieineaidd" lang="wuu" hreflang="wuu" data-title="海洋生物学" data-language-autonym="吴语" data-language-local-name="Wu Tsieineaidd" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B5%B7%E6%B4%8B%E7%94%9F%E7%89%A9%E5%AD%A6" title="海洋生物学 - Tsieinëeg" lang="zh" hreflang="zh" data-title="海洋生物学" data-language-autonym="中文" data-language-local-name="Tsieinëeg" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/H%C3%A1i-i%C3%BB%E2%81%BF_seng-bu%CC%8Dt-ha%CC%8Dk" title="Hái-iûⁿ seng-bu̍t-ha̍k - Minnan" lang="nan" hreflang="nan" data-title="Hái-iûⁿ seng-bu̍t-ha̍k" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E6%B5%B7%E6%B4%8B%E7%94%9F%E7%89%A9%E5%AD%B8" title="海洋生物學 - Cantoneeg" lang="yue" hreflang="yue" data-title="海洋生物學" data-language-autonym="粵語" data-language-local-name="Cantoneeg" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7173#sitelinks-wikipedia" title="Golygu dolenni rhyngwici" class="wbc-editpage">Golygu dolenni</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Parthau"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Bioleg_forol" title="Gweld y dudalen bwnc [c]" accesskey="c"><span>Erthygl</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sgwrs:Bioleg_forol&action=edit&redlink=1" rel="discussion" class="new" title="Sgwrsio am y dudalen (dim tudalen ar gael) [t]" accesskey="t"><span>Sgwrs</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Newid amrywiad iaith" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Cymraeg</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Golygon"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Bioleg_forol"><span>Darllen</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Bioleg_forol&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Bioleg_forol&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Bioleg_forol&action=history" title="Fersiynau cynt o'r dudalen hon. [h]" accesskey="h"><span>Gweld hanes</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Blwch offer" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Blwch offer</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Blwch offer</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">cuddio</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Rhagor o opsiynau" > <div class="vector-menu-heading"> Gweithredoedd </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Bioleg_forol"><span>Darllen</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Bioleg_forol&veaction=edit" title="Golygu'r dudalen hon [v]" accesskey="v"><span>Golygu</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Bioleg_forol&action=edit" title="Golygu cod ffynhonnell y dudalen hon [e]" accesskey="e"><span>Golygu cod</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Bioleg_forol&action=history"><span>Gweld hanes</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Cyffredinol </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Arbennig:WhatLinksHere/Bioleg_forol" title="Rhestr o bob tudalen sy'n cysylltu â hon [j]" accesskey="j"><span>Beth sy'n cysylltu yma</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Arbennig:RecentChangesLinked/Bioleg_forol" rel="nofollow" title="Newidiadau diweddar i dudalennau sydd yn cysylltu â hon [k]" accesskey="k"><span>Newidiadau perthnasol</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Arbennig:SpecialPages" title="Rhestr o'r holl dudalennau arbennig [q]" accesskey="q"><span>Tudalennau arbennig</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Bioleg_forol&oldid=11575761" title="Dolen barhaol i'r fersiwn hwn y dudalen hon"><span>Dolen barhaol</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Bioleg_forol&action=info" title="Mwy o wybodaeth am y dudalen hon"><span>Gwybodaeth am y dudalen</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Arbennig:CiteThisPage&page=Bioleg_forol&id=11575761&wpFormIdentifier=titleform" title="Gwybodaeth ar sut i gyfeirio at y dudalen hon"><span>Cyfeirio at y dudalen hon</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Arbennig:UrlShortener&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FBioleg_forol"><span>Cael URL byr</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Arbennig:QrCode&url=https%3A%2F%2Fcy.wikipedia.org%2Fwiki%2FBioleg_forol"><span>Lawrlwytho cod QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Argraffu / allforio </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Arbennig:Book&bookcmd=book_creator&referer=Bioleg+forol"><span>Llunio llyfr</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Arbennig:DownloadAsPdf&page=Bioleg_forol&action=show-download-screen"><span>Lawrlwytho fel PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Bioleg_forol&printable=yes" title="Cynhyrchwch fersiwn o'r dudalen yn barod at ei hargraffu [p]" accesskey="p"><span>Fersiwn argraffu</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Mewn prosiectau eraill </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Marine_biology" hreflang="en"><span>Comin Wikimedia</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7173" title="Cysylltu i eitem ystorfa gysylltiedig [g]" accesskey="g"><span>Eitem Wicidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Offer tudalen"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Gwedd"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Gwedd</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">symud i'r bar ochr</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">cuddio</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Oddi ar Wicipedia</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="cy" dir="ltr"><table class="infobox" style="width:22em"><caption>Bioleg forol</caption><tbody><tr><th scope="row">Enghraifft o'r canlynol</th><td>cangen o fywydeg, disgyblaeth academaidd, pwnc gradd, maes astudiaeth, arbenigedd <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7173?uselang=cy#P31" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th scope="row">Math</th><td>aquatic biology, hydrobiology <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q7173?uselang=cy#P279" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><td colspan="2" style="text-align:center"><span typeof="mw:File"><span title="Tudalen Comin"><img alt="Tudalen Comin" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Marine_biology" class="extiw" title="commons:Category:Marine biology">Ffeiliau perthnasol ar Gomin Wicimedia</a></td></tr></tbody></table> <table class="vertical-navbox nowraplinks" cellspacing="5" cellpadding="0" style="float:right;clear:right;width:22.0em;margin:0 0 1.0em 1.0em;background:#f9f9f9;border:1px solid #aaa;padding:0.2em;border-spacing:0.4em 0;text-align:center;line-height:1.4em;font-size:88%;"><tbody><tr><td style="padding-top:0.4em;line-height:1.2em;">Rhan o gyfres ar</td></tr><tr><th style="padding:0.2em 0.4em 0.2em;padding-top:0;font-size:145%;line-height:1.2em;"><a href="/wiki/Bywydeg" title="Bywydeg">Fywydeg</a></th></tr><tr><td style="padding:0.2em 0 0.4em;border-top:1px solid #aaa;padding-bottom:0;;"><span typeof="mw:File"><a href="/wiki/Delwedd:Crystal_Clear_app_Staroffice.png" class="mw-file-description" title="Glöyn byw"><img alt="Glöyn byw" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Crystal_Clear_app_Staroffice.png/100px-Crystal_Clear_app_Staroffice.png" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/3/3c/Crystal_Clear_app_Staroffice.png 1.5x" data-file-width="128" data-file-height="128" /></a></span></td></tr><tr><td style="padding:0 0.1em 0.4em;"> <div class="NavFrame collapsed" style="border:none;padding:0;"><div class="NavHead" style="font-size:105%;background:transparent;text-align:left;">Meysydd astudio</div><div class="NavContent plainlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center;"><div class="plainlist"> <ul><li><a href="/wiki/Anatomeg" title="Anatomeg">Anatomeg</a></li> <li><a href="/wiki/Biocemeg" title="Biocemeg">Biocemeg</a></li> <li><a href="/wiki/Bioleg_cell" title="Bioleg cell">Bioleg cell</a></li> <li><a href="/wiki/Bioleg_datblygiad" title="Bioleg datblygiad">Bioleg datblygiad</a></li> <li><a href="/wiki/Bioleg_ddynol" title="Bioleg ddynol">Bioleg ddynol</a></li> <li><a href="/wiki/Bioleg_esblygiadol" class="mw-redirect" title="Bioleg esblygiadol">Bioleg esblygiadol</a></li> <li><a href="/wiki/Bioleg_foleciwlaidd" title="Bioleg foleciwlaidd">Bioleg foleciwlaidd</a></li> <li><a class="mw-selflink selflink">Bioleg forol</a></li> <li><a href="/wiki/Botaneg" title="Botaneg">Botaneg</a></li> <li><a href="/wiki/Ecoleg" title="Ecoleg">Ecoleg</a></li> <li><a href="/wiki/Ffisioleg" title="Ffisioleg">Ffisioleg</a></li> <li><a href="/wiki/Geneteg" title="Geneteg">Geneteg</a></li> <li><a href="/wiki/Microfioleg" class="mw-redirect" title="Microfioleg">Microfioleg</a></li> <li><a href="/wiki/Mycoleg" title="Mycoleg">Mycoleg</a></li> <li><a href="/wiki/Paleontoleg" title="Paleontoleg">Paleontoleg</a></li> <li><a href="/wiki/S%C3%B6oleg" class="mw-redirect" title="Söoleg">Söoleg</a></li> <li><a href="/wiki/Tacsonomeg" class="mw-redirect" title="Tacsonomeg">Systemateg</a></li></ul> </div></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em;"> <div class="NavFrame collapsed" style="border:none;padding:0;"><div class="NavHead" style="font-size:105%;background:transparent;text-align:left;">Cysyniadau o fewn bioleg</div><div class="NavContent plainlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center;"><div class="hlist"> <ul><li><a href="/wiki/Bywyd" title="Bywyd">Bywyd</a></li> <li><a href="/wiki/Cadwraeth" title="Cadwraeth">Cadwraeth</a></li> <li><a href="/wiki/Cromosom" title="Cromosom">Cromosom</a></li> <li><a href="/wiki/DNA" title="DNA">DNA</a></li> <li><a href="/wiki/Esblygiad" title="Esblygiad">Esblygiad</a></li> <li><a href="/wiki/Ffosil" title="Ffosil">Ffosil</a></li> <li><a href="/wiki/Organeb_byw" title="Organeb byw">Organeb byw</a></li></ul> </div></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em;"> <div class="NavFrame collapsed" style="border:none;padding:0;"><div class="NavHead" style="font-size:105%;background:transparent;text-align:left;">Biolegwyr Cymreig adnabyddus</div><div class="NavContent plainlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center;"><div class="hlist"> <ul><li><a href="/wiki/Hugh_Davies" title="Hugh Davies">Hugh Davies</a></li> <li><a href="/wiki/R._Elwyn_Hughes_(gwyddonydd)" title="R. Elwyn Hughes (gwyddonydd)">R Elwyn Hughes</a></li></ul> </div> <div class="hlist"> <ul><li><a href="/wiki/Steve_Jones_(biolegydd)" title="Steve Jones (biolegydd)">Steve Jones</a></li> <li><a href="/wiki/Edward_Lhuyd" title="Edward Lhuyd">Edward Lhuyd</a></li></ul> </div> <div class="hlist"> <ul><li><a href="/wiki/F._Gwendolen_Rees" title="F. Gwendolen Rees">Gwendolen Rees</a></li> <li><a href="/wiki/Jean_Olwen_Thomas" title="Jean Olwen Thomas">Jean Olwen Thomas</a></li></ul> </div> <div class="hlist"> <ul><li><a href="/wiki/Deri_Tomos" title="Deri Tomos">Deri Tomos</a></li> <li><a href="/wiki/Eleanor_Vachell" title="Eleanor Vachell">Eleanor Vachell</a></li></ul> </div> <div class="hlist"> <ul><li><a href="/wiki/Alfred_Russel_Wallace" title="Alfred Russel Wallace">Alfred Russel Wallace</a></li></ul> </div></div></div></td> </tr><tr><td style="text-align:right;font-size:115%;padding-top: 0.6em;;"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><a href="/wiki/Nodyn:Bioleg" title="Nodyn:Bioleg"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/w/index.php?title=Sgwrs_Nodyn:Bioleg&action=edit&redlink=1" class="new" title="Sgwrs Nodyn:Bioleg (dim tudalen ar gael)"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a class="external text" href="https://cy.wikipedia.org/w/index.php?title=Nodyn:Bioleg&action=edit"><abbr title="Edit this template">e</abbr></a></li></ul></div></td></tr></tbody></table> <p><b>Bioleg forol</b> yw'r gangen o <a href="/wiki/Bioleg" class="mw-redirect" title="Bioleg">fioleg</a> sy'n ymwneud ag astudio <a href="/wiki/Bywyd" title="Bywyd">bywyd</a> yn y <a href="/wiki/M%C3%B4r" title="Môr">môr</a> a'r dyfroedd. Gellid ei diffinio fel yr astudiaeth wyddonol o'r <a href="/wiki/Planhigyn" title="Planhigyn">planhigion</a>, <a href="/wiki/Anifail" title="Anifail">anifeiliad</a> ac <a href="/wiki/Organeb" class="mw-redirect" title="Organeb">organebau</a> eraill sy'n byw yn y môr neu unrhyw gorff arall o ddŵr. </p><p>Gan fod nifer o <a href="/wiki/Rhywogaeth" title="Rhywogaeth">rywogaethau</a>, yn ôl y dosbarthiadau biolegol yn <a href="/wiki/Ffylwm" title="Ffylwm">phyla</a>, teuluoedd a <a href="/wiki/Genws" title="Genws">genera</a>, yn cynnwys rhai aelodau sy'n byw yn y môr ac eraill sy'n byw ar y <a href="/wiki/Tir" class="mw-disambig" title="Tir">tir</a>, mae bioleg forol yn eu dosbarthu yn ôl eu <a href="/w/index.php?title=Amgylchedd_naturiol&action=edit&redlink=1" class="new" title="Amgylchedd naturiol (dim tudalen ar gael)">amgylchedd naturiol</a> yn hytrach na'u <a href="/wiki/Tacsonomeg" class="mw-redirect" title="Tacsonomeg">tacsonomeg</a> draddodiadol. </p><p>Mae yna sawl reswm dros astudio bioleg y môr. Mae bywyd morol yn adnodd anferth, sy'n cynnig <a href="/wiki/Bywyd" title="Bywyd">bywyd</a>, <a href="/wiki/Meddyginiaeth" title="Meddyginiaeth">meddyginiaeth</a>, a deunyddiau crai, yn ogystal â chwarae rhan bwysig mewn <a href="/wiki/Twristiaeth" title="Twristiaeth">twristiaeth</a> ledled y byd. Mae bywyd morol yn un o'r ffactorau crai yn <a href="/wiki/Natur" title="Natur">natur</a> ein <a href="/wiki/Planed" title="Planed">planed</a>. Mae organebau morol, yn enwedig y <a href="/wiki/Plancton" title="Plancton">plancton</a>, yn cynhyrchu llawer o'r <a href="/wiki/Ocsigen" title="Ocsigen">ocsigen</a> rydym yn ei anadlu ac yn chwarae rhan bwysig, mae'n ymddangos, mewn rheoli <a href="/wiki/Hinsawdd" title="Hinsawdd">hinsawdd</a> y <a href="/wiki/Ddaear" class="mw-redirect" title="Ddaear">Ddaear</a>. Mae <a href="/wiki/Arfordir" title="Arfordir">arfordiroedd</a> yn cael eu newid a'i hamddiffyn gan fywyd morol i raddau yn ogystal, ac mae rhai organebau morol hyd yn oed o gymorth yn y broses o greu tir newydd. </p> <div style="clear: both; background-color: #f9f9f9; border: 1px solid #aaa; padding: 5px; padding-left: 10px; text-align: left; font-size: 90%; margin-top: 1em;"><span typeof="mw:File"><a href="/wiki/Delwedd:Butterfly_template.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Butterfly_template.svg/34px-Butterfly_template.svg.png" decoding="async" width="34" height="34" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/49/Butterfly_template.svg/51px-Butterfly_template.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/49/Butterfly_template.svg/68px-Butterfly_template.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span> <i><a href="/wiki/Wicipedia:Eginyn" title="Wicipedia:Eginyn">Eginyn</a> erthygl sydd uchod am <b><a href="/wiki/Bioleg" class="mw-redirect" title="Bioleg">fioleg</a></b>. 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