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Explaining Nature on Instagram: "Polar bears are large carnivorous mammals that live in the Arctic, mainly on sea ice. They are powerful swimmers and depend heavily on ice to hunt seals, which make up most of their diet. Adapted to the cold, they have thick fur, a layer of fat called blubber, and black skin that absorbs heat from the sun. Polar bears are considered vulnerable due to climate change, as melting sea ice is reducing their hunting grounds and threatening their survival. • #reels #exp