Why do polar bears have black skin?

Polar bears have black skin to absorb and retain heat from the Sun, helping them survive in the cold Arctic environment. Beneath their translucent fur, the black skin efficiently captures solar energy. The thick layer of blubber beneath the skin provides additional insulation, while their fur traps air to create a warm layer. This combination of adaptations ensures polar bears maintain their body temperature even in sub-zero conditions, allowing them to thrive in one of Earth’s harshest climates.