Black skin of a polar bear

The polar bear is an apex predator in the Arctic. It is perfectly adapted to the cold climate in this part of the world. One of such adaptations is black skin, covered with two thick layers of fur. Thanks to its dark color, it absorbs more sunlight, which heats the animal’s body.

The fur itself consists of transparent, hollow hair — it reflects very well the white sunlight giving the illusion of a bright color.

Male polar bear, Hornsund, Spitsbergen (author: Piotr Andryszczak)

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