The sea otter is a marine mammal that lives on the coasts of the northern and eastern North Pacific Ocean (although the one in this photo is in a zoo in Tokyo). It dives to the sea floor to look for food. It eats mostly shellfish and some kinds of fish.海獺是一種生活在東、北太平洋海岸的海洋哺乳動物（不過圖片中的海獺生活在東京的一家動物園裏）。海獺會潛入海床覓食，它們的食物大都是海底生長的海膽、貝類、海洋甲殼類和魚類等。
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