Genus Notonecta is a family of aquatic insects commonly known as backswimmers. These insects have a flattened body with long oar-like legs that allow them to swim in any direction. Some common synonyms for Notonecta include water boatman, water bug, and backswimmer. These synonyms are often used to refer to the entire genus or to specific species within the genus. Notonecta is found in freshwater environments worldwide, and its predatory nature means that it is an important player in aquatic ecosystems. Whether you call them backswimmers, water boatmen, or water bugs, Notonecta is an intriguing family of aquatic insects worth knowing about.