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Bull Shark
This unique shark has the ability to live in saltwater as well as freshwater which makes it all the more dangerous. In general, it is a very aggressive predator and attacks any animal that it considers it a threat or prey. It usually lives in oceans but can travel upstream into lakes and rivers catching people unaware. It is found across the tropical belt in warmer waters. Though attacks by bull sharks are less common that by great white sharks, it is still one of the deadliest fishes in the world.
