鲸鱼 whale
Any of various aquatic, chiefly marine mammals of the order Cetacea, including the whales, dolphins, and porpoises, characterized by a nearly hairless body, anterior limbs modified into broad flippers, vestigial posterior limbs, and a flat, notched tail.
鲸目动物:鲸目动物中的一种水生动物,主要是海生哺乳动物,包括鲸、海豚和鼠海豚, 特征为身体几乎无毛、前肢变成宽大的鳍、后肢退化及尾扁平而分叉。
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