In the United States, they are found off the East Coast and in the Gulf of Mexico. Unlike most sharks, bull sharks can survive in freshwater for long periods of time. The bull shark is not a picky eater. Sharks eat mostly fish, but can also eat other shark species, marine mammals, birds, and turtles. Although rare, bull sharks have also been recorded eating other bull sharks. Adult sharks tend to hunt by themselves. Bull sharks have these glands called rectal glands located near their cloaca (the opening used for reproduction and waste elimination). This helps prevent dehydration in fresh water and excessive salt intake in the