The unicorns of the sea, Monodon monoceros are members of the order Cetacea, along with whales, dolphins and porpoises.

身为海洋中的独角兽，它们与鲸鱼、海豚和鼠豚一样，属于鲸。

As the turtle swims across the oceanarium,the first porpoise swoops down from above and butts his shell with his belly.

一次游戏中，当海龟游过水族馆时，第一只海豚从上方猛扑下去，并用腹部撞击龟壳。