Some do like polar bears
They hunt seals.
Penguins interact with other animals when hunting for food. They hunt for krill and compete with other animals such as whales, seals and squid for krill.
generally they hunted seals, whales, arctic foxes, walrus and other things
No animal lives on the Antarctic continent, so there is/was nothing to hunt on land. The Southern Ocean is home to many kinds of whales and seals, and when hunting these animals was a way of life, whalers and other hunters pursued these animals in the ocean.
No, in nature animals do not "favor" other animals.
Seals hunt fish, in the water, all the time
Meat-eating animals that hunt and eat other animals are called carnivores.
Predators
They hunt birds and other bugs
No, oysters do not eat seals. Oysters are filter feeders that primarily consume plankton and small particles from the water. They obtain their food by filtering it through their gills, making them quite different from predators like seals, which are carnivorous mammals that hunt fish and other marine animals.
No, otters do not typically kill baby seals as part of their natural behavior. Otters are carnivorous animals that primarily feed on fish, crustaceans, and other small marine creatures. They are not known to actively hunt or prey on seals, especially seal pups.
In the past five years alone, more than one million seals have been slaughtered in the commercial seal hunt in Canada. The actual number of seals killed is likely higher than that, though, because many seals are shot at and injured in the course of the hunt, and many of these animals slip into the water, where they die slowly and are not counted or recovered.