Bull Shark

Bull sharks are large aggressive sharks which average 1d6+6 feet in length, but can reach 13 feet. They can tolerate both fresh and salt water, and although they are limited to fairly warm waters, they can travel as far as 2,500 miles upriver from the ocean. They are found in lakes and rivers, but bull sharks can tolerate shallow water as well, and have been encountered in water 3 feet deep. The average bull shark weighs over 200 pounds, and may be up to ten times as heavy.