Sharks Become imobile when upside down. Sharks Have An Endless Supply of teeth. The Great White Shark is the Only Shark That sticks its head out of the water to look around. Only a Few Sharks Jump out of the Water including the Biggest Great White Shark. The Bull shark can live in both salt and fresh water. Tiger sharks will eat anything , most fish / sharks taste and test things out by tasting them in there mouth , the difference between Tiger sharks and all others is , no matter what it is , the tiger shark will eat it , and eventually will have to through it up.