Two polar bear cubs playfully wrestle with each other in the snow in Wapusk National Park.
Three of a total of seven images capturing a polar bear climbing the face of an iceberg on Baffin Island, Canada.
Polar bear leaping across an ice floe 500 miles from the North Pole north of Svalbard.
Sequence of seven images capturing a polar bear climbing the face of an iceberg on Baffin Island, Canada.
