Polar Bear female between trees, with her three months old cubs playing, on Tundra

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