Sharks are hostile water mobs that spawn in the ocean. Similar to most hostile water mobs, they are voracious eaters, as well as successful predators.
Sharks have 15 hearts, and will constantly swim through the ocean. If a player is in their range, then they will swim at him/her and attack. They deal 3 hearts of damage on easy, 5 hearts on normal, and 7 1/2 damage on hard making them the strongest water mobs. They will also eat nearby fish, tropical fish, and farm animals.