Experts say coral reefs create homes for millions of species encourage healthy marine food webs and protect coastlines.

专家说，珊瑚礁为数百万物种创造了家园，鼓励健康的海洋食物网，并保护海岸线。

And these algae naturally produce toxic compounds, like neurotoxins, that infiltrate marine food webs.

这些藻类自然会产生有毒化合物，如神经毒素， 这些化合物会渗透到海洋食物网中。

But they are a watery desert, clear and blue because there is so little plankton, the key to all marine food chains.

不过这里堪称水中的荒漠，清澈的蓝色是因为这里几乎没有浮游生物，而那正是所有海洋食物链的关键。

This can make the area really biologically productive, with plankton thriving on the nutrients, and forming the basis for marine food webs.

这可以使该地区真正具有生物生产力，浮游生物在营养物质中茁壮成长，并形成海洋食物网的基础。