Any of various tropical herbivorous aquatic mammals, having paddlelike front flippers and a horizontally flattened rounded tail and found in warm coastal waters of Florida, northern South America, West Africa, and the Caribbean.

【动】海牛。热带草食性哺乳类动物，具有胸鳍、尾圆，产于北美洲佛罗里达、加勒比海、南美洲北部、西非热带的大西洋沿岸。