Two young polar bears (Ursus maritimus), feeding side-by-side on a fresh bearded seal kill on Spitsbergen, Svalbard, Norway

polar bears ursus maritimus bearded seal feeding svalbard wildlife arctic young coastal ice natural behavior hunting seals habitat biodiversity animal mammals conservation marine life predator prey tundra ecosystem fauna carnivore nature environmental snow cold climate reflection water gulls floes interaction welfare regions ecosystems survival animals world endangerment change food chain