Baby Seal

Some seals eat warm-blooded prey, including other seals. The Leopard Seal, which is probably the most carnivorous and predatory pinniped, eats penguins as well as Crabeater and Ross Seals. The South American Sea Lion also eats penguins as well as flying seabirds and young South American Fur Seals. Steller Sea Lions eat Northern Fur Seal pups, Common Seal pups, and birds.
Predation
Almost all pinnipeds are potential prey for orcas and larger sharks. Arctic species are an important component of polar bear diets.