A polar bear watches her cubs on Hudson Bay in Manitoba, Canada. The bay is famous for polar bears, but their population is in decline.
Photograph by Tom Murphy, National Geographic
Thanks to a camera trap, a polar bear unwittingly makes a self-portrait in Svalbard.
Photograph by Paul Nicklen, National Geographic
A polar bear jumps between ice floes near the island of Spitsbergen in Norway in 2010.
Photograph by Ralph Lee Hopkins, National Geographic
A red fox rubs noses with a polar bear on Hudson Bay in Manitoba, Canada.
Photograph by Johansen Krause, National Geographic
A polar bear and her cubs are stranded on an iceless shoreline in Svalbard.
Photograph by Paul Nicklen, National Geographic
A polar bear sleeps on ice in Svalbard.
Photograph by Ralph Lee Hopkins, National Geographic
A polar bear swims in Admiralty Inlet in Nunavut, Canada.
Photograph by Paul Nicklen, National Geographic
Two polar bears face off against each other in Churchill, Manitoba, in northern Canada.
Photograph by Paul Nicklen, National Geographic
A polar bear sleeps with his paws folded underneath.
Photograph by Norbert Rosing, National Geographic
A polar bear stands over a partially eaten whale carcass in Kaktovik, Alaska.
Photograph by Joël Sartore, National Geographic
A polar bear inspects photographer Paul Nicklen's cabin – his home while on assignment for National Geographic's 2009 article, "Paradise."
Photograph by Paul Nicklen, National Geographic
A polar bear and cubs walk away from the camera in Manitoba, Canada.
Photograph by Norbert Rosing, National Geographic