Marginal Moss read hǔ tái, Marginal Moss is the Ulva family, Marginal Moss genus of algae, algae body bright green, composed of a single layer of cells, surrounded by tubular or adhering to the band. The cell arrangement is related to the species, mononuclear, pigmented body lamellar, the plant can be up to 1 meter high.

Total strokes: 9 strokes. Stroke order: 1.丶（dot）, 2.丶（dot）, 3. (T), 4. 丶 (dot), 5.? (横折提), 6.ノ (撇), 7.一 (横), 8.一 (横), 9.丨 (竖).

The total strokes of moss: 8 strokes. Stroke order: 1.一 (横), 2.丨 (竖), 3.丨 (竖), 4.ㄥ (撇折), 5.丶 (点), 6.丨 (竖), 7.? (horizontal fold), 8.一 (horizontal).

Harmful effects of seaweed:

Seaweeds can easily die or be eaten by animals, so once there are the right conditions, they will keep reproducing at a faster rate. The bloom organisms will not only block the respiratory system of fish and other organisms, causing them to die, but they will also block the sunlight coming into the water body, making other algae fixed under the water die due to the lack of sunlight.