The largest living reptile is the saltwater crocodile (Crocodylus porosus), which can grow up to 23 feet (7 meters) in length, although individuals over 20 feet are rare. These formidable predators inhabit coastal regions, rivers, and freshwater lakes throughout Southeast Asia and Australia. Saltwater crocodiles are known for their powerful jaws, strong swimming capabilities, and opportunistic feeding habits, which allow them to hunt a variety of prey, including fish, birds, and mammals. Their impressive size, strength, and adaptability make them apex predators in their ecosystems.