1、 Algae

1. Green algae: its algae body is grass green. It has a height of more than 6000 varieties. Most of them grow in fresh water and a small part grow on rocks

2. Red algae: it generally grows in the ocean and has more species. The algae body is rose red and purplish red, and some are dark red. There are many red algae with good economic value

3. Brown algae: This is what we usually call kelp. It is edible algae. It is flat and banded, and the length can sometimes reach about 20m. It is brown

2、 Mangrove

It is a tree species that grows in the sea and grows at different heights, sometimes up to about 5m. Their root growth ability is very good and very developed. They have green tree crowns. They will be submerged at high tide and only expose the tree crowns on the sea

3、 Seaweed

As we all know, seaweed is an angiosperm growing under the sea water, and its root system is also very developed, which can well protect the benthic organisms. It is similar to many terrestrial plants. It is difficult to survive without sunshine