儒艮——海底最大的食草动物。

Who is the largest grass-eater in the sea? The answer is the dugong (儒艮). It is 2.4 to 3 meters long and weighs 230 to 500 kg. The dugong is the only vegetarian (素食的) sea mammal (哺乳动物). Some people call them the “cows of the sea”.