The dugong primarily feeds on seagrass.

儒艮主要以海草为食。

The dugong feeds primarily on seagrass in shallow waters.

儒艮主要在浅水区以海草为食。

This is not seaweed,but a marine relative of water lily, known as seagrass.

这些不是海藻，而是睡莲科植物的海中远亲，又称海草。

Each one can weigh nearly half a ton and march for 40 kilos of seagrass a day.

儒艮每只体重约有半吨，每天要吃约40公斤的海草。

The world heritage site,its enormous seagrass beds carpet the shallows, creating one of the richest marine environments on earth.

一个世界遗产地大量的海草丛覆盖了潜水湾创造出地球上最富饶的海洋环境之一。

Seagrass beds are believed to rival rice paddies in their photosynthetic productivity or the ability to extract greenhouse gas CO2 and convert it into oxygen and stored carbon matter.

种植大米的土地能高效得进行光合作用—吸收温室气体二氧化碳，将其转化为氧气，并储存碳元素，海草的生长地同样如此