How do polar bears stay warm in Arctic winters?

Pol ar bears stay warm in Ar ctic win ters through a combination of their thick fur , which provides ins ulation , and their ability to con serve energy by slow ing down their met abol ism and h iber n ating during c older months . They also have a layer of bl ub ber beneath their skin that helps to keep them warm and bu oy ant in the icy waters of the Ar ctic . Additionally , they are skilled hun ters and can use their sense of smell to locate prey , reducing the need to expend energy searching for food . </s>