Polar Bear female hiding in day den between trees, on Tundra

polar bear ice bear snow covered snow wapusk np polar hudson bay nanook arctic tundra manitoba winter wilderness ursus denning area ice sea ice ursus maritimus lone cub denning site fletcher lake resting protecting carnivore predator on the move no people denning maritimus freezing carring threatened first steps endangered newly born churchill watching rare mother priceless instinct playing baby funny young cute