An apex species is an animal that is naturally not preyed on by other predators. Since the polar bear is not preyed on by any animals in its natural habitat, it is an apex predator. The polar bear is the largest of the land-living carnivores. It is also one of the most powerful predators in the Arctic though it mainly acquires food from the sea.
A polar bear spends almost half its lifetime in search of food. It predominantly hunts seals. It is known to crack the ice where a seal surfaces to breathe. It feeds on the flesh and blubber of seals. At times, it also feeds on the carcasses of whales. It is also known to attack walruses and their pups.
Polar bears are voracious eaters too; they can eat up to 40 kilograms of meat in one sitting. But a polar bear manages to catch only one or two out of 10 seals it hunts, depending on the time of year and other variables.
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