As Their prey is aquatic, polar bears are great swimmers, and they're even regarded to eliminate beluga whales. In swimming, the polar bear employs only its front limbs, an aquatic adaptation present in no other four-legged mammal. Polar bears are opportunistic and also predatory: they're going to consume lifeless fish https://www.youtube.com/channel/UCCoZfLHRsYsRsVHqS-CSAWA