There are two types of modern crocodiles found in tropical and subtropical environments. The gavialids are found in India; they eat fish and have slender snouts. The crocodylids are found almost worldwide and consist of crocodiles and alligators. They have long bodies and powerful tails used for swimming or defense. Their limbs allow the animals to maneuver and steer in the water; on land, they use their limbs to walk with a slow gait, with their bellies held high off the ground. These animals survive off a wide variety of food, including fish, large vertebrates, and carrion.