Melting seawater is good for biodiversity. Mangroves are known as "marine forest", "undersea forest", "coast guard" and "seawater desalinator". As the only woody plant in the coastal wetland ecosystem, she plays the role of the backbone of the coastal forest. It has the functions of wind and waves prevention, dike protection and bank protection, and climate regulation. It plays an irreplaceable role in resisting natural disasters such as tides and storms and maintaining and improving the ecological environment of bays and estuaries. Mangroves provide an ideal place for marine life to develop, grow, inhabit and avoid enemies. It attracts a large number of seabirds, fish, shrimp, crabs, shellfish and other creatures to feed and live here. White dolphins and dugong (mermaids), national first-class animals, also often appear in forest areas. It plays a balanced role in regional ecology and is of great significance to environmental protection.