Phylum: Magnoliophyta

Seagrasses are marine flowering plants that can live underwater. Unlike algae, they are true flowering plants with leaves, roots, flowers, seeds and underground horizontal stems called rhizomes. They are highly specialised and have adapted to the soft sediments of coastal and estuarine environments. Seagrasses are extremely important as they stabilise sandy sea floors, provide habitat including nursery areas for juvenile fish and are an important food source for some marine mammals, including dugongs.