The only kind I know about are killer whales.....
the things that killer whales eat...like seals and penguins.
killer whales
pretty much all penguins
yes
killer whales (orca)
Killer Whales (AKA Orcas) eat seals, penguins, and even other whales.
Other dolphins, penguins, seals, fish. Will sometimes attack whales. Killer whales are really large dolphins.
Antarctica
They eat penguins and fish
the answer to that is sharks or even killer (orca)whales.
leopard seals,killer whales and people