水草 Water grass

依附於水環境、至少部分生殖週期發生在水中或水表面的植物類群。

主要價值為供應氧氣以及消耗水中廢物

A group of plants that are attached to the water environment and that occur at least in part of the reproductive cycle in water or on the surface of the water.

The main value is the supply of oxygen and the consumption of waste in water