The Weddell Seal lives in the icy waters of the Southern Ocean, along the coast of Antarctica and nearby islands feeding on the Antarctic cod, Antarctic silverfish, cephalopods and crustaceans to live. The only predators the Weddell Seal must worry about are killer whales and leopard seals, both of which hunt the Weddell seal, which can dive up to 2,000 feet under the surface. Neither killer whales nor leopard seals are able to dive that deep in icy conditions, allowing the Weddell Seal to easily escape them in colder conditions. In fact, during the winter in Antarctica the Weddell Seal is able to live without fear of natural predators.
Here is a video introducing you to the Weddell Seal: