Leopard seal
They are very aggressive, and their only predator is the killer whale. Their mouths can open 160° and clamp down with incredible force and can quickly emerge from the water to snatch prey, such as penguins on the ice's edge. Leopard seals can easily rip penguins and baby seals to shreds by jerking their heads from side to side. They have incredibly long teeth, up to one inch long. Also, they have spotted grey skin and are 10-12 feet long and have a slender bodies.