This photo above by Natural Habitat guide Colby Brokvist clearly illustrates how well polar bears insulate and regulate their body heat. Cold temperatures in Churchill during polar bear season are often still pretty warm for bears. This polar bear is cooling off in snow while resting and conserving energy. Summer allows bears to cool off in the Hudson Bay and they can more often be seen swimming or trying to prey on seals lounging on remnant ice floes or tidal flats.