Two polar bear cubs playfully wrestle with each other in the snow in Wapusk National Park.
Mother polar bear nursing her two cubs in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Polar Bear Cubs climb on mother's back while playing in Wapusk National Park south of Churchill Manitoba Canada near Hudson Bay.
Polar Bear Cubs keeping close to their mother in Wapusk National Park south of Churchill Manitoba Canada near the Hudson Bay.
Mother Polar Bear with her two cubs in Wapusk National Park south of Churchill Manitoba Canada walking toward Hudson Bay.
Early morning fog with reflection on lake in Acadia National Park, Maine.
Sunrise in the Smoky Mountains photographed fron the Foothills Parkway with fog in the valley.
View of fall color from the park road near the park entrance Danali National Park Alaska.
Train trestle outside the train station in Denali National Park Alaska
Rose Lake in the Hocking Hills State Park on a foggy morning in the fall.
Bull elk bugling in Hayden Valley in Yellowstone National Park Wyoming.
American Bison posing in early morning light in Yellowstone National Park Wyoming.
Grizzly bear posing before entering the forest in Lake Clark National Park in Alaska.
Aurora photographed on tundra in Wapusk National Park in Manitoba, Canada.
Aurora in night sky above Chena Hot Springs near Fairbanks Alaska.
Herd of elephants running toward a water hole in Etosha National Park Namibia.