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Bull Sharks I am going to tell you many facts about bull sharks. Bull sharks live in warm ocean waters but also in freshwater. They live in many places in the world like tropical shorelines and rivers in freshwater. Most sharks live in salt water because they need salt in their bodies to survive. Bull sharks have a special adaptation to live in freshwater. When a bull shark is in freshwater, their kidneys help keep the salt in their bodies. Bull sharks could change in the future because of climate change. Climate change will make some areas hotter and some colder. This may cause bull sharks to change where they live because they like warm water. In conclusion, these are some interesting facts I learned about bull sharks.