Sharks are amazing creatures. Most are saltwater but a few, notably bull sharks, manage to live in fresh and salt water. Surprisingly, Mississippi River bull sharks can travel about 1,000 miles up that enormous American river, scientists now say The sharks, Carcharhinus leucas, have long been known to inhabit both fresh and salt water. TheyContinue reading “Mississippi River Bull Sharks Travel 1,000 Miles Up The Mighty River, Scientists Now Say”