Tekuna sune mafi girman tsarin halittu a doron kasa wanda ya mamaye wani yanki mai girma na Duniya. Ruwan tekuna gida ne na dabbobi da yawa: daga ƙananan ƙwayoyin cuta masu rai guda zuwa manyan kifayen kifi. Kyakkyawan mazauni don kowane nau'in fauna ya haɓaka a nan, kuma ruwa ya cika da iskar oxygen. Plankton yana rayuwa a cikin ruwa mai zurfin ruwa. Na farko zurfin mita casa'in a yankunan ruwa dabbobi da yawa ne ke da yawa. Mafi zurfin, ya fi duhun tekun tekun, amma har ma a matakin dubban mitoci a ƙarƙashin ruwa, tafasasshen rai ne.
Gabaɗaya, masana kimiyya sun lura cewa an yi nazarin dabbobin Tekun Duniya da ƙasa da kashi 20%. A yanzu haka, an gano kimanin nau'in dabbobi na miliyan 1.5, amma masana sun kiyasta cewa kusan nau'in miliyan 25 na halittu daban-daban suna rayuwa a cikin ruwan. Duk rabe-raben dabbobi yanada sabani sosai, amma za'a iya raba su kashi-kashi.
Kifi
Mafi yawan wadanda ke zaune a cikin teku shine kifi, tunda akwai sama da dubu 250 daga cikinsu, kuma kowace shekara masana kimiyya suna gano wasu nau'ikan halittu, wadanda a da basu san su ba. Cartilaginous kifi haske ne da sharks.
Stingray
Shark
Stingrays masu kama da wutsiya, masu kamannin lu'u-lu'u, na lantarki, masu kamannin zafin kifi. Tiger, Makaho, Doguwar fika-fikai, Shudi, Siliki, Kifin kifi, Hammerhead sharks, Fari, Giant, Fox, Kafet, Whale shark da sauransu suna iyo a cikin tekuna.
Tiger shark
Hammerhead shark
Whales
Whales sune manyan wakilan teku. Sun kasance daga rukunin dabbobi masu shayarwa kuma suna da yankuna uku: gashin-baki, hakori da tsoho. Zuwa yau, nau'ikan cetaceans 79 sanannu ne. Mafi shahararrun wakilai:
Shuɗin whale
Orca
Mahaifa maniyyi
Taguwar
Grey whale
Whale mai tsalle-tsalle
Ganyaya
Belukha
Belttooth
Tasmanov ya bugi baki
Dan wasan ninkaya na Arewa
Sauran dabbobin teku
Ofayan ɗayan abubuwan ban mamaki, amma kyawawan wakilan fauna na teku sune murjani.
Murjani
Dabbobi ne kanana wadanda suke da kwarangwal din dutsen farar ƙasa waɗanda suka taru don samar da murjani. Aungiya mai girma ita ce crustaceans, waɗanda yawansu yakai nau'in 55 dubu, daga cikinsu ana samun kifin kifi, lobsters, shrimps da lobsters kusan ko'ina.
Lobster
Molluscs ƙananan invertebrates ne waɗanda ke rayuwa a cikin kwansonsu. Wakilan wannan rukunin dorinar ruwa ne, doruwa, kaguwa.
Kifin teku mai kafa takwas
Kirari
A cikin ruwan sanyi na tekun da ke kan sandunan, ana samun walruses, like, da kuma like na fur.
Walrus
Kunkuru suna rayuwa cikin ruwa mai dumi. Dabbobin da ke da ban sha'awa na Tekun Duniya suna da yawa - kifin kifi, jellyfish da bushiya.
Kayan kifin
Don haka, a cikin dukkanin tekuna na duniya suna rayuwa da yawa na nau'ikan halittu, dukkansu suna da ban ban sha'awa da ban mamaki. Har yanzu mutane basu gano wannan duniyar mai ban mamaki ba ta Tekun Duniya.
