Leopard seals and killer whales.
Seals and whales
seals, and pelicans, and otters
leopard seals preys on them and their prey is fish.
lizzards.
spider
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The Killer whale (Orcinus orca), the apex predator of the marine environment, preys on marine mammals such as seals, walruses, other whales, dolphins, porpoises, and even Polar bears. Plus lots of fishes of all sorts.
other sharks such as the great white shark or elephant seals
tigers,snakes.
Bobcats, Cougers, and Fishers
The only animal that occasionally preys on a lion is the Nile crocodile if a lion happens to end up in a river where the crocs are found.
The killer whale preys on large fish, squid, and sometimes dolphins beluga whales seals.