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Who knows the animals in the picture?

Seals? 【hǎi bào】?

new word

Basic interpretation? Detailed explanation?

[Black Treasure]

A family of mammals. There are many kinds. They vary in size, generally about 1.5 meters long, and the largest elephant seal can reach 5-6 meters in length. The limbs have fins. Swim fast and be good at diving. Living in temperate and cold coastal areas, mostly in the northern hemisphere. The staple food is fish and shellfish.