Pleuronectiformes，heterosomata，flounder

Features：

Flounder is a general term for fishes of the order Plaice. It has no swim bladder and feeds on worms, crustaceans and other animals. Taxonomically it belongs to the class Actinopterygii, Pleuronichthys. The flatfish has a flat body with eyes that grow on only one side of the body, a unique asymmetri...

Features：It's a relatively small toothed whale

The porpoise (Phocoena phocoena in Latin), also known as porpoise, is the most common toothed whale in the North and Baltic Seas.Porpoises prefer calmer waters at a medium depth of about 20 meters near the coast, but occasionally swim deeper into the ocean.Porpoises feed almost exclusively on fish,...

Antarctic baleen whale, Southern minke whale

Features：One of the smallest baleen whales

Antarctic minke whale (scientific name: Balaenoptera bonaerensis) is also known as Antarctic minke whale. New mitochondrial DNA tests have found that Antarctic minke whales are independent species from minke whales. This test also determined that minke whales are the closest relatives of Antarctic m...

Tetraodontidae,pufferfish、puffers,Pufferfish, boatfish, pufferfish, good fish, chicken, turtle fish

Features：When angry, it turns into a balloon. It is the most poisonous fish.

Pufferfish (scientific name Tetraodontidae) is also known as pufferfish or puffers in foreign languages. Because of its "pig-like" appearance and its frequent activities in river estuaries, it is commonly known as pufferfish in Jiangsu and Zhejiang, while it is called Dingba in Shandong, L...

Eleginus gracilis,cod, bighead cod, bighead fish, bighead fish, pollack

Features：Known as "gold in the sea" and "nutritionist on the table" in Europe

The scientific name of cod is Eleginus gracilis. It is a kind of deep-sea fish and one of the economic edible fish. There are 9 species, namely: silver cod, Pacific cod, Atlantic cod, haddock, blue cod, green cod, haddock, Norwegian cod, and pollock.Cod is a cold-water fish in the middle and lower l...

Zalophus japonicus

Features：Larger than the California sea lion, extinct

Japanese sea lion, Zalophus japonicus (Peters, 1866), is an extinct species of sea lion in the genus Zalophus of the family Eurasidae. Before 2003, Japanese sea lions were considered a subspecies of the California sea lion, but later it was pointed out that Japanese sea lions and California sea lion...

Zalophus californianus,Californian Sea Lion

Features：Males have an enlarged mane around their necks, usually with white fur on top and dark brown on the back.

Californian Sea Lion (scientific name: Zalophus californianus), foreign name California Sea Lion, no subspecies.The Japanese sea lion (Zalophus japonicus) and the Galapagos sea lion (Zalophus japonica) were once subspecies of the California sea lion, but were classified as separate species in 2007.T...

Phocarctos hookeri

Features：It is a local species and the largest sea lion in the area.

The scientific name of New Zealand sea lion is Phocarctos hookeri, also known as Hooker's sea lion. It feeds on small fish such as octopus and flounder, and also eats crabs and penguins. It likes to live in groups. It gives birth in late December or early January. The birthing process is short,...

Arctocephalus pusillus，South African and Australian Fur Seal,Cape fur seal, African fur sea lion, South African fur sea lion, Australian fur sea lion

Features：The largest fur seal

The scientific name of the African fur seal is Arctocephalus pusillus, and its foreign name is South African and Australian Fur Seal. There are two subspecies.African fur sea lions are gentle and like to gather in groups. They generally do not have a fixed habitat except during the breeding season....

Arctocephalus gazella,Kerguelen Fur seal,Island sea lions, sea wolves, Antarctic fur seals

Features：Has the longest beard and bad breath

The Antarctic fur seal (scientific name: Arctocephalus gazella) is called Kerguelen Fur seal. Its scientific name comes from the first German ship to capture it, SMS Gazelle. Captain Cook mentioned that there were a large number of fur seals living on South Georgia Island after exploring it in 1775....

Leptonychotes weddellii,monk seal, Weddell seal, Weddell seal, Weddell seal

Features：It was the first seal Columbus saw in the "New World".

Weddell seal (Latin name: Leptonychotes weddellii), also known as Weddell seal, Weddell seal or Weddell seal, is the only species of Weddell seal genus under the seal family, named by a British Antarctic navigator James Weddell.Weddell seals are an extremely ancient creature, so they are called &quo...

Monachus monachus，Mediterranean monk sea,Monk seal

Features：The largest of the monk seals, the rarest seal in the world

The scientific name of the Mediterranean monk seal is Monachus monachus, and its foreign name is Mediterranean monk seal. It is an ancient and rare seal. Its head is very round and densely covered with short hair, which looks like a monk's head, hence the name. It is the rarest seal in the world...

Mirounga leonina,Southern elephant-seal

Features：The largest seal on Earth, the largest pinniped, and the largest carnivore

The scientific name of the Southern elephant seal is Mirounga leonina, and its foreign name is Southern elephant-seal. It is the largest seal on earth, the largest pinniped in history, and even the largest carnivore. It is divided into three subspecies: South American subspecies (M.l falclandicus),...

Mirounga angustirostris，Northern elephant-seal,Northern elephant seal

Features：The nose is shaped like a cockscomb and swells when angry or excited.

The scientific name of the Northern elephant seal is Mirounga angustirostris, and its foreign name is Northern elephant-seal. It is a large seal-like animal.The Northern elephant seal has large, round, black eyes. The width of the eyes shows that they mainly hunt by vision. Like other seals, norther...

Lobodon carcinophagus,Crabeater seal

Features：The mouth has rows of sharp teeth, like saw teeth.

Sawtooth seals are called Lobodon carcinophagus in scientific name and Crabeater seal in foreign language. They are the most numerous seals in the world.Sawtooth seals feed on krill. It is an illusion to call them crab-eating seals because there are very few crabs in Antarctica, which are not enough...

Hydrurga leptonyx,leopard seal,

Features：It is named after the black spots on its neck that resemble leopard spots.

Leopard seal (scientific name: Hydrurga leptonyx) is also known as leopard seal in foreign languages. There are no subspecies.Leopard seals are solitary animals that mate and raise their young in groups. Compared with other pinnipeds, they prefer warm-blooded animals. Because it moves slowly on land...

Halichoerus grypus,Grey seal,Atlantic grey seal

Features：Clapping underwater

Grey seal (scientific name: Halichoerus grypus) is a large seal in the family Phocidae and the only member of the genus Halichoerus. They also have another name - Atlantic grey seal.Grey seals feed on fish such as salmon, cod, herring, and flounder, as well as cephalopods and arthropods. The daily f...

Cystophora cristata,Hooded seal

Features：The male has a black sac on his head, which swells into a "red balloon" when he gets angry.

Hooded seal (scientific name: Cystophora cristata) is also known as Hooded seal in foreign languages. There are no subspecies.Among the 19 species of seals, the hooded seal is the least known pinniped. In the past, people always mistakenly thought it was a whale (whales and pinnipeds are two distinc...

Phoca vitulina ，Common seal

Features：It often stays in the harbor, hence the name

The scientific name of the harbor seal is Phoca vitulina (Linnaeus, 1758), and the foreign name is Common seal. It is a seal distributed in the temperate and polar waters of the Northern Hemisphere.The harbor seal lives in groups, but the number of its groups is not as large as other seals. When not...

Phoca sibirica,Baikal Seal,Siberian seal, freshwater seal

Features：It has a round body and is the only freshwater seal in the world.

Baikal Seal (Phoca sibirica), also known as Baikal Seal in English, lives in the Baikal Lake area of Russia. It is the only freshwater seal in the world and also the smallest seal species in the world.The Baikal seals have long and strong claws that can break through the ice and open the hole for ai...

Phoca hispida，Ringed seal，Nordic seal, ice seal, ring seal

Features：The smallest seal in the Arctic

The scientific name of the ringed seal is Phoca hispida, and its foreign name is Ringed seal. There are 5 subspecies. It is one of the smallest species in the seal family and the smallest seal in the Arctic.Most seals in the world live in seawater, and the only species that lives entirely in freshwa...