快,我要海豹的英文介紹.

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Earless seal

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Earless Seals




Grey seal



Scientific classification








Kingdom:



Animalia




Phylum:



Chordata




Class:



Mammalia




Order:



Carnivora




Suborder:



Caniformia




Superfamily:



Pinnipedia




Family:



Phocidae

Gray, 1821






Genera



Monachus (Monk Seals)

Mirounga (Elephant Seal)

Lobodon (Crabeater Seals)

Leptonychotes

Hydrurga (Leopard Seals)

Ommatophoca

Erignathus (Bearded Seals)

Phoca

Pusa

Halichoerus (Grey Seals)

Cystophora (Hooded Seals)


The true seals or earless seals are one of the three main groups of mammals within the seal suborder, Pinnipedia. All true seals are members of the family Phocidae. They are sometimes called crawling seals, to distinguish them from the fur seals and sea lions of family Otariidae.

Phocids are the more highly specialized for aquatic life of the two groups and, unlike otariids, lack external ears and cannot bring their hind flippers under their body to walk on them.

They are more streamlined than fur seals and sea lions, and can therefore swim more effectively over long distances than those can. However, because they cannot turn their hind flippers downward, they are very clumsy on land, having to wriggle with their front flippers and abdominal muscles; this method of locomotion is called galumphing.

Additionally, true seals do not communicate by "barking" like the fur seals and sea lions of family Otariidae. They communicate by slapping the water and grunting.

[edit] Feeding and reproduction

海豹科

海豹 Phoca vitulina
分類
界： 動物界 Animalia

門： 脊索動物門 Chordata

綱： 哺乳綱 Mammalia

目： 食肉目 Carnivora

亞目： 鳍足亚目 Pinnipedia

科： 海豹科 Phocidae
Gray, 1821

属
僧海豹亞科 Monachinae
海豹亞科 Phocinae

海豹是对鳍足亚目种海豹科动物的统称，这是一类身体成纺锤体型、四肢特化成鳍状的动物，海豹的头圆颈短，没有外耳廓，因为它们的脸部长的像猫从而得名海豹，以区别鳍足亚目其他两个科（海狮科、海象科）的动物。它们高度适应海洋中的生活，多数时间在海洋里活动，遍布整个海域，以南极沿岸数量最多。

常见的海豹有：斑海豹、琴海豹、冠海豹等等。

[编辑] 分類
海豹科 Phocidae

僧海豹亞科 Monachinae
僧海豹属 Monachus'
夏威夷僧海豹 Monachus schauinslandi
地中海僧海豹 Monachus monachus
西印度僧海豹 Monachus tropicalis （可能已在1950年代絕種）
象海豹属 Mirounga
北象海豹 Mirounga angustirostris
南象海豹 Mirounga leonina
罗斯海豹属 Ommatophoca
羅氏海豹 Ommatophoca rossi
食蟹海豹属 Lobodon
食蟹海豹 Lobodon carcinophagus
豹海豹属 Hydrurga
豹海豹 Hydrurga leptonyx
威德尔海豹属 Leptonychotes
威氏海豹 Leptonychotes weddellii
海豹亞科 Phocinae
髯海豹属 Erignathus
髭海豹 Erignathus barbatus
管海豹属Cystophora
冠海豹 Cystophora cristata
海豹属 Phoca
港海豹 Phoca vitulina
斑海豹 Phoca largha
圓海豹 Phoca hispida
貝加爾湖海豹 Phoca sibirica
裏海豹 Phoca caspica
琴海豹 Phoca groenlandica （或 Pagophilus groenlandicus）
環海豹 Phoca fasciata
灰海豹属 Halichoerus
灰海豹 Halichoerus grypus
维基共享资源中相关的多媒体资源：
海豹科来自“http://zh.wikipedia.org/wiki/%E6%B5%B7%E8%B1%B9%E7%A7%91”