Is a seal a predator and prey?

Seals are the favorite food of many predators. Sharks, killer whales, and polar bears are three of the largest predators of seals. Polar bears hunt for seals by finding the places where the seal is hiding on the ice, and pouncing on them. Sharks can hunt seals by hiding very deep in the sea, and rushing upwards when they see a seal overhead.

Humans sometimes hunt seals too.