Backswimmers are aquatic insects belonging to the family Notonectidae. They are known for their unique swimming style, which involves moving upside down on the water's surface. Backswimmers have elongated bodies and long, oar-like hind legs that help them propel through the water efficiently. These insects are typically found in freshwater habitats like ponds and lakes. Backswimmers are predatory, feeding on small insects and other aquatic organisms. They can be recognized by their distinctive dark coloration and the ability to deliver a mild bite if handled.