Hammerhead sharks are a unique group of sharks known for their distinctive head shape, which resembles a hammer. This unique structure, called a cephalofoil, helps them to enhance their vision and improve their ability to locate prey. There are several species of hammerhead sharks, with the Great Hammerhead being the largest, reaching lengths of up to 20 feet. These sharks are typically found in warm waters around the world, often near coastlines and in deeper oceanic regions. Hammerhead sharks are social creatures, often seen swimming in schools during the day. They primarily feed on fish, squid, and other marine animals, using their wide heads to pin down prey.