Plants that survive in marine habitats are called halophytes. Halophytes are plants that are adapted to grow in environments with high levels of salt, such as in tidal marshes, estuaries, and other coastal habitats. These plants have evolved specialized mechanisms to tolerate the high salt levels, such as the ability to exclude salt from their tissues or to store excess salt in specialized structures. Some common examples of halophytes include salt marshes, mangroves, and seagrasses.
Halophytes play an important role in the ecosystem by providing habitat and food for a variety of species, and by helping to protect the shoreline from erosion and storm surges. They also play a role in regulating the levels of carbon dioxide and other gases in the atmosphere, and in removing pollutants from the water. Despite their importance, halophytes are under threat from a variety of factors, including habitat destruction, over-harvesting, and the impacts of climate change, and are in need of protection and conservation.