The skin of a polar bear is actually black. Underneath their white fur, which serves as insulation and camouflage in their Arctic environment, polar bears have black skin that helps them absorb sunlight. This adaptation is vital for their survival in freezing temperatures as it aids in heat retention. The bear's thick layer of blubber also plays a significant role in providing insulation against the cold. Polar bears' fur appears white due to the scattering of light, which can confuse prey by blending in with their snowy surroundings.