Fish, krill, crustaceans and squid seem to be favourites. During the breeding period, a male Emperor penguin can go for 15 weeks without food. Each species has there own territory and when a male wants to attract a female, he throws back his head, out stretches his wings, and lets out a loud cry. The penguin's enemies include the leopard seal, seathbill, sea eagle, and blue-tongued lizard. The leopard seal alone can eat as many as 15 penguins in one day.
Oil spills are also a great danger to penguins.
Their feathers get clogged with oil and can no longer protect from the cold. If the penguin tries to clean off the oil, they can be poisoned.