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Here and there, plants manage to take root, and they're cropped by green turtles.
植物設法到處生根，它們成了綠海龜的食物。
Seagrasses are the only flowering plants that have managed to grow in the sea
海草是唯一在海里生長的有花植物，
although they put out a few ribbon like leaves
海草長出葉子狀的帶狀物，
they produce very extended networks of fleshy stems, risomes, that are buried in the sand.
以此延伸它們埋在沙子里的肉質根莖。
At their lushest they can transform the sea bed into an underwater meadow.
這種蓬勃的長勢可以把海床覆蓋在下面。
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亞西部的鯊魚灣。
These vast aquatic grasslands stretch for fifteen hundred square miles
這片廣大的海洋牧場，面積可達1500平方英里，
and, like terrestrial prairies, they support herds of grazers. Dugongs.
像陸地上的大草原一樣，這里也養育了大量的食草動物--儒艮。
Dugongs are the largest herbivores in the sea.
儒艮是海洋里最大的食草動物。
They can be three meters long and weigh half a ton
可以長到3米長，半噸重，
and they eat nothing but seagrass, mostly the fleshy risomes, which they excavate with their mobile lips.
它們除了海草什么都不吃，他們不停移動嘴唇，把海草的肉質根莖送到口中。
