Marine animals are divided into 2 main categories: vertebrates and invertebrates. Vertebrates have backbones, invertebrates do not.
Oceanologists distinguish the main classes of marine animals, known as types:
All vertebrates are chordates, including: whales, sharks and dolphins, amphibians, reptiles and fish. Although there are millions of chordates in the seas, there are not as many vertebrates as there are invertebrates.
There are 17 main groups of invertebrates that live in the sea, for example: crustaceans, hemichordates and others.
giant shark
largemouth shark
White shark
Tiger shark
bull shark
Katran
cat shark
pygmy shark
freshwater shark
blacknose shark
whitetip shark
darktip shark
lemon shark
reef shark
Shark Chinese striped
Mustachioed dog shark
harlequin shark
frilled shark
Wobbegong shark
Other marine animals
brownie shark
mako shark
fox shark
Hammerhead shark
silky shark
Atlantic herring
Bahamian sawnose shark
Blue whale
bowhead whale
gray whale
Humpback whale (Humpback)
fin whale
Seiwal (Saidyanoy (ivas) whale)
minke whale
southern whale
Sperm whale
pygmy sperm whale
Beluga whale
Narwhal (Unicorn)
Plavun northern
Highbrow bottlenose
moray eel
bottlenose dolphin
motley dolphin
Grinda
gray dolphin
killer whale
Orca
long-beaked dolphins
large-toothed dolphins
Ross seal
Sea leopard
Sea Elephant
sea hare
pacific walrus
Atlantic walrus
Laptev walrus
Sea lion
Manatee
Octopus
Cuttlefish
Squid
spider crab
Lobster
spiny lobster
Sea Horse
Jellyfish
shellfish
Sea turtle
Ringed emidocephalus
dugong
Conclusion
Rare marine animals reptiles. While most reptiles live on land or spend time in fresh water, there are species that live in the oceans. The most famous of them are sea turtles. They live for many years, grow large. In the ocean, adult turtles have no enemies and dive deep to find food or avoid danger. Sea snakes are another type of reptile that lives in salt water.
Marine animals are an important food source for humans. People get food at sea individually and on large sea vessels, seafood is tasty, healthy and cheaper than the meat of warm-blooded animals.
