Thanks for the cite, oil pan 4.
Quote:
https://nhpbs.org › natureworks › polar.htm
The polar bear's white fur helps camouflage it in its polar environment. The polar bear has two layers of fur, a soft under coat and an outer coat of guard hairs. The guard hairs are hollow and help the polar bear float! The polar bear has fur on the soles of its feet that helps protect it from the cold and ice and prevents the polar bear from ...
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I do believe also that the Polar bear's fur is an optical fiber that carries solar energy to it's black skin where it is absorbed.