A female polar bear swam for a record-breaking nine days straight, traversing 426 miles (687 kilometers) of water—equivalent to the distance between Washington, D.C., and Boston, a new study says.The predator made her epic journey in the Beaufort Sea, where sea ice is shrinking due to global warming, forcing mother bears to swim greater and greater distances to reach land—to the peril of their cubs via news.nationalgeographic.com
Yellowstone! Had the pleasure of observing this grizzly sow and her cub this May. The snow was deep and the cub was riding on the sow's back as she was rooting through the snow for food. The sow had just caught a rodent and lifted her head to reveal her catch.via on.natgeo.com
Join photographer Florian Schulz as he seeks to capture a dramatic image of a polar bear.Click here to see the video: http://ngm.nationalgeographic.com/2011/07/polar-bears/polar-bear-video
A brown bear runs across beach in summer carrying a salmon on the Alaskan Peninsula.Photograph by Alaska Stock/National Geographic
A mother grizzly bear greets her cub.
Photograph by James Galletto