Mammals can maintain a constant body temperature.

The elephant seal is a very large marine mammal.

He owns a big house.

The northern elephant seal is a large marine mammal that mainly lives in the northern hemisphere.

The southern elephant seal is the largest seal in the world, and its weight can reach over 3 tons.

We learned about the protection of the main sea.

I was amazed at his extraordinary talent.

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It is a very beautiful view.

Elephants have big ears and a long nose.