mainly sea lions. Also did you know that an Orca is actually a member of the porpoise family? (meaning their related to dolphins)
Only Killer Whales (Orcas) prey on gray whales.
seals or sealions
They are predators.
Yes
by hidding in the water
leopard seals preys on them and their prey is fish.
Killer Whales prey on Grey whales, which are quite big.
Killer whales are top predators in the sea. Healthy adults have no natural predators, but sharks prey on older, younger, or ill killer whales.
Killer whales got their name from their reputation as skilled hunters that sometimes prey on other marine mammals, earning them the nickname "killer whale."
Penguins prey on fish. It is also prey of the sea lions and killer whales.
They are prey to hammerhead sharks and killer whales.
Killer Whales