Two polar bear cubs playfully wrestle with each other in the snow in Wapusk National Park.
A sequence of images of young polar bear cubs playing on the tundra in Wapusk National Park, Manitoba, Canada while their mother watches intently.
Eight image action sequence of a bearded seal diving into the Arctic Ocean from the pack ice north of the Svalbard Islands.
Snowy Owl on the snow photographed at eye level at sunset in Quebec, Canada.
Sunset with yellow ball of sun touching horizon taken from Morton's Overlook in Smoky Mountains National Park
Interesting cloud formation at Sunset from Morton's Overlook in the Great Smoky Mountains N.P.
Fog beginning to form late in the evening following as a storm clears from Morton's Overlook in Smoky Mountains National Park.
Snowy Owl in flight over a snow-covered field in Quebec, Canada.
Snowy Owl hovering overhead in strong gusty winds. Its wings are in the full downward position.
Composite of images illustrating the various phases of the Super Lunar Eclipse which occurred on September 22, 2015.