Nichenthraw Mountain reflecting on an unnamed lake near the East Fork of the Chandalar River. Cotton grass blooms on the beach in the foreground.
A polar bear takes an early-fall swim in Bernard Harbor.
Long-tailed ducks flying over Beaufort Lagoon.
Arctic ground squirrel with rock lichens in the foreground.
Two fog systems collide over the Hulahula River.
An arctic fox in its white winter coat on Barter Island.
A buff-breasted sandpiper giving its courtship display. This species migrates from Argentina to the Arctic Refuge to nest and would be one of the five most-threatened bird species if oil development proceeds in the coastal plain, according to the Audubon Alaska WatchList.
Icy Reef, a barrier Island along the coast of the Arctic Refuge and premier nesting spot for numerous migratory bird species. On the right is the arctic coast, and on the left is a coastal lagoon.
Snow geese over the coastal plain.
Musk ox herd on the Canning River delta.
In the Kongakut River valley a fledgling gyrfalcon chick flexes its wings before attempting to fly.
Dall sheep rams along the Hulahula River valley in the Romanzof Mountains of the Brooks Range.
The braided Hulahula River meets the arctic coast.
Aurora borealis over the Hulahula River valley.