The Leopard Seal is the apex predator on Antarctica. It eats krill, squid, fish, penguins, and seals. It is most famous for eating penguins. A Leopard Seal has to do 3 things before it can eat. First, it has to catch a penguin. Then, it has to shake the penguin to death. Finally, after the Leopard Seal has killed a penguin, it has to shake it harder to rip it to smaller pieces. That is when the Leopard Seal can eat.