Posidonia

Posidonia is a type of seagrass that lives underwater in the Mediterranean Sea. It forms dense underwater meadows that provide vital habitats for marine life, protect coastlines from erosion, and improve water quality by filtering pollutants. These seagrass beds are essential for maintaining healthy ecosystems, supporting fish, invertebrates, and seabirds. Posidonia is protected by law because it grows very slowly and is threatened by pollution, anchoring, and climate change. Its presence indicates a healthy marine environment, making it a valuable indicator of ecological well-being in Mediterranean waters.