Aquatic vegetation is a term used to describe plants that live in water, such as ALGAE. ALGAE is the most common type of aquatic vegetation, and it is an important part of many aquatic ecosystems. ALGAE can be found in both freshwater and saltwater environments, and it provides food and oxygen for other aquatic organisms. ALGAE also helps to keep water clean by absorbing pollutants and providing shelter for other aquatic life.