What Is a Sea Cow 海牛是什么？

Sea cow is also called manatee.Manatees are aquatic1 mammals2 that belongto a group of animals called Sirenia3. In thisgroup there are also dugongs. Dugongs andmanatees are similar in size， colour andshape， but they’re different in their tails4.t u b ， l i a t d e d n u o r ， g i b a e v a h s e e t a n a Mdugongs have flat tails， like whales’tails.

海牛也叫manatee，是一種水生哺乳動物，屬海牛目。（剩余2902字）