海洋动物生活在海洋中。

A marine animal lives in the ocean.

鲨鱼是一种凶猛的海洋动物。

A shark is a fierce marine animal.

海豚是一种非常聪明的海洋动物。

The dolphin is a very intelligent marine animal.

许多海洋动物生活在海水中。

Many marine animals live in sea-water.

海豚是非常聪明的海洋动物。

Dolphins are very intelligent marine animals.

保护海洋动物是我们的责任。

It is our responsibility to protect marine animals.

海洋中充满了浮游生物，它们是许多海洋动物的食物。

The ocean is full of plankton that serve as food for many marine animals.

这位科学家专攻海洋动物的分类学。

The scientist specializes in the taxonomy of marine animals.

水族馆经常有海洋动物的特别表演。

Aquariums often have special shows featuring marine animals.

许多海洋动物在含盐水的栖息地中茁壮成长。

Many marine animals thrive in saltwater habitats.