A polar bear raises its head during a blizzard near Hudson Bay, in northern Canada. #

A polar bear swims in Eclipse Channel, in the Torngat Mountains National Park, northern Labrador, Canada. #

A polar bear and two cubs walk through Wapusk National Park, in Manitoba, Canada. #

A stray polar bear is seen outside the Oktyabrsky mine on the outskirts of the Russian industrial city of Norilsk on June 17, 2019. #

A polar bear stands on sea ice in open water in the Beaufort Sea. #

Polar bears spar near the Hudson Bay community of Churchill, Manitoba, on November 20, 2021. #

Several polar bears are seen near a glacier, as scientists take part in research studies in the Barents Sea, in Norway, on July 23, 2022. #

A polar bear leaps across loose pack ice near the entrance to Woodfjorden, in Svalbard. #

A polar bear rests on a shoreline in the Harbour Islands, along Hudson Bay, in Canada's Nunavut Territory. #

A polar bear waits while hunting beluga whales in Hudson Bay outside Churchill, in northern Canada, on August 9, 2022. #

An underwater view of a polar bear swimming in Eclipse Channel, in northern Labrador #

A polar bear and young cub cling to an iceberg near the Harbour Islands in Nunavut Territory, at sunset. #

A polar bear lies out on the tundra, near Arviat, in Nunavut Territory. #

A polar bear walks through a pile of whale bones near Kaktovik, Alaska. #

A polar bear sits on snow-covered tundra as the sun sets in the Canadian Arctic. #

A polar-bear-crossing sign is illuminated by a vehicle during a blizzard in Churchill, Manitoba, Canada, on November 21, 2021. #

A polar bear walks through bushes along Hudson Bay in Manitoba, in the autumn. #

Tourists in an inflatable boat watch a polar bear feeding on a dead fin whale in Svalbard. #

A polar bear prowls along the shore, near Pyramiden, Svalbard, on September 21, 2021. #

A polar bear hides while submerged, at the edge of a melting ice floe, on a summer evening near Churchill, Manitoba. #

A polar bear shakes its head while swimming along the coastline near Sallyhamna, in Svalbard. #

A polar bear tries to climb onto an expedition ship in Norway's Svalbard Archipelago. #

Polar bears swim near Kaktovik, Alaska. #