Migration

Polar bears spend much of their lives traveling, sometimes traveling as far as three thousand miles in search of food. During the summer months, bears follow the shifting pack ice, roaming up to 125 miles offshore. In the autumn, polar bears move south with the advancing ice. In October or November, pregnant females enter their dens. Some dens are used over and over, and some females will even return to the dens they were born in. Family groups remain in their dens until March or April.