What is a marine ecosystem that can purify seawater, prevent wind and waves, promote siltation and protect beaches, and have the functions of carbon fixation and climate regulation?

Marine ecosystem has the functions of purifying seawater, preventing wind and waves, promoting siltation and protecting beaches, fixing carbon and regulating climate. It is a breeding ground for fish, shrimp, crabs and shellfish, and also an important habitat for rare and endangered waterfowl.

The ocean is one of the main treasures of biodiversity in the world, accounting for more than 90% of the earth's habitat. There are about 250,000 known species, and at least two-thirds of the marine species have not been identified.

? Marine ecosystem refers to the natural system formed by the interaction between biological communities in the ocean and their environment, mainly including mangrove, coral reef, seaweed bed, oyster reef, seaweed field, coastal salt marshes, muddy coast, sandy coast, estuaries, bays and other 10 typical ecosystems. They not only have natural ecological value, but also have different social service functions. Mangroves grow in the transitional zone between land and sea, which is a peculiar ecosystem. They are a wetland woody plant community with mangrove plants as the main body and evergreen trees or shrubs. They can prevent wind and waves, purify seawater, fix and store carbon and maintain biodiversity. They are places where fish, shrimp, crabs and shellfish grow and breed, and also important habitats for rare and endangered waterfowl.

However, mangroves are disappearing at an accelerated rate. More than 80% mangroves in the two most important mangrove hotspots in the world-the western Indian Ocean and some areas in Southeast Asia-have disappeared.