A herd can clear a patch of seagrass the size of a football pitch in a single day. 这群儒艮可以在一天内吃掉足球场般大小的海草
Food is not evenly distributed in the tropical shallow seas and it can take a lot of finding 食物在热带海域的分布并不平均 所以要找到食物也不容易
Dugongs are the largest herbivores in the sea. 儒艮是海洋里最大的食草动物
The largest expanse grows in the shallow waters of Shark Bay, in Western Australia. 世界上最大的草海在澳大利亚西部的鲨鱼湾
Seagrasses are the only flowering plants that have managed to grow in the sea 海草是唯一在海里生长的有花植物
although they put out a few ribbon like leaves they produce very extended networks of fleshy stems, risomes, that are buried in the sand. 海草长出叶子状的带状物 以此延伸它们埋在沙子里的肉质根茎.
and they can also help in clearing away sand when searching for food. 并且它的胸鳍还可以在找寻食物的时候清理砂子
spectacular though it is, has only recently been observed, for it only happens on the most remote reefs in Indonesia. 引人入胜.只是最近才被发现. 因为它发生在偏僻的印尼珊瑚礁
but today no more than six percent of Indonesia's reefs are in their pristine state. 但是到现在 只有不到6%的珊瑚礁还还保持着原始状态