蹼趾动物

例句：

1. 1. The otter is a type of marine mammal that has webbed feet.
   海獭是一种有蹼足的海洋哺乳动物。
2. 2. The dolphin is a species of cetacean that uses its flippers to swim.
   海豚是一类鲸豚类动物，它们用鳍来游泳。
3. 3. The manta ray is a large, flat-bodied fish with a long, narrow tail and webbed feet.
   蝠鲼是一种大型扁平鱼类，长而狭窄的尾巴和蹼足。