A herbivorous marine mammal, native to tropical coastal waters of the Indian Ocean, Red Sea, and southwest Pacific Ocean and having paddlelike front flippers and a whale-like tail fin.

【动】儒艮。热带草食性哺乳类动物，具有胸鳍、尾似鲸，产于热带印度洋、红海、太平洋西南部的沿岸。