英语语法分析

Seaweeds and corals, which need light to grow, colonise them.

依靠阳光生长的海藻和珊瑚聚集在沉船上。

There are four classes of seaweeds—green, brown, red, and bluegreen—and they’re all packedwith healthful nutrients.

海藻有四种分类——绿藻，褐藻，红藻和蓝绿藻，它们都充满了健康的营养物。

He says while seaweeds might seem mundane they are an important habitat and food resource for underwater animals and plants.

虽然海草看起来很平凡，但是却是海洋生物的重要食物来源。