Polar bears prey literally serves itself up.

Polar bears often hunt walruses by simply charging at a group of them and eating the ones that were crushed or wounded in the mass panic to escape.
Meaning that direct attacks are rare.

The polar bear being king of the Arctic. has few pew on which to hunt. Within the frozen landscape there lives another powerful mammal – the mighty walrus.

Which is bigger, a polar bear or a walrus?

A mature male polar bear can weigh more than 700 kg (1,500 lb), making it one of the largest land carnivores on Earth.

Walruses are much heavier however.

An adult male walrus can weigh more than 2,000 kg (4,400 lb), about three times as much as a polar bear. Walruses are the largest seals in the Arctic but they are not top predators this is because they eat primarily mollusks from the seabed.

Do polar bears hunt walruses?

Despite the huge size difference, polar bears do hunt walruses. This might not be so surprising, considering that lions and wolves hunt prey much larger than themselves. Amazing however unlike lions and wolves, bears do not hunt cooperatively, they never do – they’re solitary hunters.

Walruses, by contrast, are an enormous animal that usually come ashore in large, tightly packed groups.

A marauding polar bear will only rouse the whole group into a panicked charge back into the sea, where they are safe. Polar bears can occasionally catch a fleeing walrus on land, but even the biggest polar bear cannot subdue a healthy adult walrus.

Walrus’s have been observed with bear’s claws firmly embedded into their thick hide while fleeing. Once the walrus makes it to the water, escape is certain. This escape is possible because walruses are substantially more powerful and agile in the water than polar bears are.

Walruses must always come back onto land to rest. Smart polar bears know that consistently harassing and driving walruses back into the sea will eventually separate sick or exhausted individuals from the group.

Additionally, young walruses are occasionally trampled and left behind by the stampeding adults. Polar bears are able to seize and kill such weakened walruses. In this way, solitary polar bears are able to prey upon walruses by turning their herding instincts against them.

Do walruses ever attack polar bears?

Walruses are formidable creatures, rippling with muscles and armed with saber-like tusks. Still, their first response to aggression from polar bears is to flee. If however a walrus is somehow cornered, or if it’s defending a pup, it will fight vigorously. This can lead to them inflicting terrible and often fatal wounds.