海獭是稀有动物,只产于北太平洋的寒冷海域,海獭的身上长有动物界中最紧密的毛发每平方寸有一百万根.根据动物学家的研究,海獭是由栖息于河川中的水獭,在大约五百万年前才移居海边而进化成海兽.因此,海獭并不像生存在于海水中已有三千五百万年的老前辈海狗─那样善于潜水,同时也缺乏一层厚厚的皮下脂肪以抗寒.
The sea otter is a rare animal,only
produced in the North Pacific cold sea otters,who has long hair most closely in
the animal world per square inch,one million.According to the study by
zoologist,sea otter otter inhabits rivers,about five million years ago and
evolved into the sea before moving the sea.Therefore,sea otters and not
survive in seawater has been thirty-five million years old seal that good at
diving,but also the lack of a thick layer of subcutaneous fat to cold.