Nyama zam'madzi zimagwera m'magulu akulu awiri: zinyama zam'mimba ndi zopanda mafupa. Vertebrates ali ndi msana; zopanda mafupa alibe.
Akatswiri a zamaphunziro a m'nyanja amasiyanitsa magulu akuluakulu a nyama zam'madzi zotchedwa mitundu:
- nsomba ndi tizilombo ting'onoting'ono;
- nyamakazi;
- nkhono;
- ndalama;
- kukambirana;
- echinoderm.
Zamoyo zonse zamoyo zimakhala zovuta, kuphatikizapo: anamgumi, nsomba ndi dolphins, amphibians, zokwawa ndi nsomba. Ngakhale kuti kunyanja kuli nyumba zankhaninkhani, palibenso zinyama zochuluka mofanana ndi zopanda mafupa.
Pali magulu akuluakulu 17 a nyama zopanda mafupa omwe amakhala m'nyanja, mwachitsanzo: ma crustaceans, semi-chordates ndi ena.
Shaki yaikulu
Bigmouth shark
Shaki yoyera
Nsombazi
Bull shark
Katran
Cat shark
Shark wam'madzi
Sharki wamadzi
Shark wakuda wakuda
Shaki yoyera
Mdima wakuda shark
Shaki ya mandimu
Shark yam'madzi
Sharki yamizere yaku China
Mbalame shark
Shaki ya Harlequin
Shark Wokazinga
Wobbegong shark
Nyama zina zam'madzi
Brownie shark
Shark-mako
Fox shark
Nyama yakutchire ya shark
Nsomba za silika
Ng'ombe ya Atlantic
Bahamian adawona nsombazi
Whale wamtambo
Nsomba ya Bowhead
Whale wofiirira
Nangumi (Hombback)
Finwhal
Seyval (Saidyanoy (msondodzi) nsomba)
Nsomba ya Minke
South whale
Nsomba ya umuna
Nsomba ya umuna wa Pygmy
Belukha
Narwhal (Chipembere)
Wosambira wakumpoto
Botolo lalitali
Moray
Mbalame ya dolphin
Motley dolphin
Grinda
Dolphin wakuda
Orca wamba
Whale wakupha wamng'ono
Ma dolphin amitengo yayitali
Ma dolphin okhala ndi mano akulu
Chisindikizo cha Ross
Nyalugwe wam'nyanja
Njovu Yam'madzi
Kalulu wam'nyanja
Walrus waku Pacific
Walrus wa ku Atlantic
Laptev walrus
Mkango wa m'nyanja
Manatee
Okutapasi
Nsomba zam'madzi
Sikwidi
Nkhanu ya kangaude
Lobusitara
Nkhanu zothwanima
Hatchi Yanyanja
Nsomba
Molluscs
Kamba wam'nyanja
Emidocephalus wopukutidwa
Dugong
Mapeto
Kawirikawiri nyama zam'madzi zimakhala zokwawa. Ngakhale zokwawa zambiri zimakhala pamtunda kapena zimathera m'madzi abwino, pali mitundu ya zinthu zomwe zimakhala m'nyanja. Odziwika kwambiri ndi akamba amchere. Amakhala zaka zambiri, amakula. M'nyanja, akamba achikulire alibe adani; amathamangira pansi kuti apeze chakudya kapena kupewa ngozi. Njoka zam'nyanja ndi mtundu wina wa zokwawa zomwe zimakhala m'madzi amchere.
Nyama zam'madzi ndizofunikira pakudya kwa anthu. Anthu amapeza chakudya kunyanja payokha komanso pazombo zazikulu zam'madzi, nsomba ndizokoma, zathanzi komanso zotsika mtengo kuposa nyama ya nyama zotentha.
