海獭和水獭的区别?

2025-03-16 16:02:44
推荐回答(3个)
回答1:

海獭和水獭的区别:
1、水獭分布在北半球广大地域,海獭只分布在北太平洋;
2、水獭有长尾巴,海獭尾巴较短;
3、水獭都较小,海獭较大;
4、水獭的巢穴在岸上,海獭几乎从不上岸;
5、水獭身体毛色一致;海獭脸部毛色明显比身体浅;
6、水獭主食是鱼,海獭主食是贝类。
7、海獭的抗寒本领是来自体内和体外两项遗传变异,体外变异就是上述的盛长密集毛发,而体内变异则是消耗大量海鲜以盛产热能。
8、水獭是半水栖兽类,喜欢栖息在湖泊、河湾、沼泽等淡水区,主食鱼类,也吃蛙、蟹和水禽。他善游泳,潜水能力极强,一次可在水下停留2分钟,捕起预定来像猫捉老鼠一样快捷。水獭的皮毛不但外观美丽,而且特别厚,绒毛厚密而柔软,几乎不会被水浸湿,保温抗冻作用极好。水獭生长在欧洲、亚洲、美洲和非洲,现已被列为国家二级保护动物。

回答2:

回答3:

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