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A large stand of Arctic cotton (Eriophorum callitrix) in Denali National Park, Alaska, United States of America
Riding the bus along the 92 mile-long road into Denali National Park, Alaska, United States of America
Riding the bus along the 92 mile-long road into Denali National Park, Alaska, United States of America
View of the Polychrome Mountains from lookout point on the park road inside Denali National Park and Preserve, Alaska, United States of America
View of the Polychrome Mountains from lookout point on the park road inside Denali National Park and Preserve, Alaska, United States of America
View of the Polychrome Mountains from lookout point on the park road inside Denali National Park and Preserve, Alaska, United States of America
Float planes used to fly guests in to the Brooks Lodge and campground in Katmai National Park near Bristol Bay, Alaska, United States of America
Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
Adult brown bear (Ursus arctos) foraging for salmon at the Brooks River, Katmai National Park, Alaska, United States of America
View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, Katmai National Park, Alaska, United States of America
Adult brown bear sow (Ursus arctos) watching human activities at the Brooks River, Katmai National Park, Alaska, United States of America
View from Park Service platform where adult brown bears (Ursus arctos) forage for salmon, Katmai National Park, Alaska, United States of America
White Snowshoe Hare sitting in its snowy burrow, Denali National Park, Alaska, United States of America, North America
An Alaskan moose in winter roaming the Denali National Park, Alaska, United States of America, North America
Alaskan Railroad going through Denali National Park in the winter, Alaska, United States of America, North America
Trans-Alaska Pipeline System, Fairbanks, Alaska, United States of America, North America
Trans-Alaska Pipeline System, Fairbanks, Alaska, United States of America, North America
A rocky snow covered mountain in the Denali National Park, Alaska, United States of America, North America
Sunrise over the frozen Otto Lake and snowy mountains of Denali National Park in the background, Alaska, United States of America, North America
Mount Drum, Sanford, Wrangell, and Blackburn, Wrangell-St. Elias National Park, UNESCO World Heritage Site, Willow Creek, Alaska, United States of America, North America
Puffin, Alaska Sealife Centre, Coldwater Marine Science Facility, Seward, Resurrection Bay, Kenai Peninsula, Alaska, United States of America, North America
Juneau, State Capital, view from the sea, mist clears over downtown buildings, mountains, forest and float planes, Alaksa, United States of America, North America
Early morning reflections in summer, Behm Canal, Misty Fjords National Monument, Tongass National Forest, Ketchikan, Alaska, United States of America, North America
Cruise ship, Rudyerd Bay, beautiful day in summer, Misty Fjords National Monument, Tongass National Forest, Ketchikan, Alaska, United States of America, North America
Aialik Glacier, mountains, island and blue ice, Harding Icefield, Kenai Fjords National Park, near Seward, Alaska, United States of America, North America
Colourful kayaks, Aialik Glacier, blue ice and mountains, Harding Icefield, Kenai Fjords National Park, near Seward, Alaska, United States of America, North America
Sea otters (Enhyrda lutris), endangered species, calm waters of Sitka Sound, Sitka, Northern Panhandle, Southeast Alaska, United States of America, North America
Mount Edgecumbe reflections, extinct volcano, Kruzof island, from Sitka Sound, Sitka, Northern Panhandle, Southeast Alaska, United States of America, North America
Spectacular iceberg, with stunning blue cube, Tracy Arm Fjord, misty conditions, near South Sawyer Glacier, Alaska, United States of America, North America
Ice pack and blue ice face of South Sawyer Glacier, mountain backdrop, Stikine Icefield, Tracy Arm Fjord, Alaska, United States of America, North America
Ice pack and blue ice face of South Sawyer Glacier, mountain backdrop, Stikine Icefield, Tracy Arm Fjord, Alaska, United States of America, North America
Blue ice face and floating ice, Sawyer Glacier and mountains, misty conditions, Stikine Icefield, Tracy Arm Fjord, Alaska, United States of America, North America
Panoramic landscape of the Denali Mountain (Mount McKinley), Denali National Park, Alaska, United States of america, North America
American Great Horned owl (Bubo virginianus), Alaska, United States of America, North America
Seward, Resurrection Bay, Kenai Peninsula, Alaska, United States of America, North America
Exit Glacier, Kenai Fjords National Park, Alaska, United States of America, North America
Grizzly bear (brown) bear (Ursus arctos), Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America
Grizzly bear (brown bear) (Ursus arctos), Moraine Creek (River), Katmai National Park and Reserve, Alaska, United States of America, North America
Holgate Glacier, Harding Icefield, Kenai Fjords National Park, Alaska, United States of America, North America
Scenery, Homer, Harding Icefield, Kachemak Bay, Kenai Fjords National Park, Alaska, United States of America, North America
Moose (Alces alces), Kenai Peninsula, Alaska, United States of America, North America
Holgate Glacier, Harding Icefield, Kenai Fjords National Park, Alaska, United States of America, North America
An adult bull porcupine caribou (Rangifer tarandus granti), hiding in fall color changes in Denali National Park, Alaska, United States of America, North America
Lamplugh Glacier, a tidewater glacier in Glacier Bay National Park and Preserve, Southeast Alaska, United States of America, North America
Auke Bay as seen from a small private plane flying from Juneau to Gustavus, Southeast Alaska, United States of America, North America
A raft of common murres (Uria aalge) at breeding site on South Marble Island, Glacier Bay National Park, Alaska, United States of America, North America
A raft of common murres (Uria aalge) at breeding site on South Marble Island, Glacier Bay National Park, Alaska, United States of America, North America
Wild Nootka lupine (Lupinus nootkatensis), in the Kagamil Island, Aleutians, Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae), surfacing with spout in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae), flukes-up dive in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Steller sea lion (Eumetopias jubatus), haul out site, South Marble Islands, Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Steller sea lions (Eumetopias jubatus), haul out site, South Marble Islands, Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Crab fisherman unloading his catch near the Chilkat River, Haines, Southeast Alaska, United States of America, North America
Adult bald eagle (Haliaeetus leucocephalus) on iceberg near Johns Hopkins Glacier, Southeast Alaska, United States of America, North America
A view of South Marble Island in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae) flukes-up dive in Inian Pass, Southeast Alaska, Pacific Ocean, United States of America, North America
Views from the fishing town of Petersburg on Mitkof Island at low tide, Southeast Alaska, Pacific Ocean, United States of America, North America
A view of the commercial cruise ship Island Princess operating in Southeast Alaska, Pacific Ocean, United States of America, North America
Scenic views of the south Sawyer Glacier in Tracy Arm-Fords Terror Wilderness area in Southeast Alaska, United States of America, North America
Guests from the Lindblad Expeditions ship National Geographic Sea Bird in Southeast Alaska, United States of America, North America
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
Glacier Bay National Park and Preserve in southeast Alaska, United States of America
View of the Fishing town of Petersburg, Southeast Alaska, United States of America
Glowing cognac (brandy) reflections, glass table at sunset, cruise ship stern, Resurrection Bay, Kenai Peninsula, Alaska, United States of America, North America
Harbour Seals (Phoca Vitulina) on an iceberg, blue ice of Aialik Glacier, Kenai Fjords National Park, near Seward, Alaska, United States of America, North America
Harbour Seals (Phoca Vitulina) on an iceberg, Aialik Glacier, Harding Icefield, Kenai Fjords National Park, Alaska, United States of America, North America
An adult brown bear (Ursus arctos), in Geographic Harbor, Katmai National Park, Alaska, United States of America, North America
Fall color change amongst the trees and shrubs in Polychrome Pass in Denali National Park, Alaska, United States of America, North America
Adult humpback whale (Megaptera novaeangliae), flukes-up dive at sunset in Glacier Bay National Park, UNESCO World Heritage Site, Alaska, United States of America, North America
Views from the fishing town of Petersburg on Mitkof Island, Southeast Alaska, Pacific Ocean, United States of America, North America
A view in Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Complete rainbow over the calm waters of Inian Pass in southeast Alaska, Pacific Ocean, United States of America, North America
Scenic view of Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, Pacific Ocean, United States of America, North America
Scenic view of Glacier Bay National Park and Preserve, UNESCO World Heritage Site, Southeast Alaska, Pacific Ocean, United States of America, North America
Adult bull killer whale (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America
Adult bull killer whale (Orcinus orca) surfacing in Chatham Strait, Southeast Alaska, United States of America, Pacific Ocean, North America
Guests from the Lindblad Expeditions ship National Geographic Sea Bird in Glacier Bay National Park, UNESCO World Heritage Site, Southeast Alaska, United States of America, North America
Northern lights (Aurora borealis) illuminate the night sky along the horizon behind mountains near Anchorage, Alaska, United States Of America.
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the Sawyer Glacier in Tracy Arm, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America
Glacial iceberg detail from ice calved off the LeConte Glacier near Petersberg, Southeast Alaska, United States of America
Adult humpback whale (Megaptera novaeangliae) breaching along the west side of Chatham Strait in Alaska, United States of America
Adult humpback whale (Megaptera novaeangliae) breaching along the west side of Chatham Strait in Alaska, United States of America
Adult humpback whales (Megaptera novaeangliae) co-operatively bubble-net feeding in Southeast Alaska, United States of America
Mendenhall Glacier just outside Juneau, Southeast Alaska, United States of America
View of the Fishing town of Petersburg, Southeast Alaska, United States of America
View of the Fishing town of Petersburg, Southeast Alaska, United States of America
View of private yacht Timoneer in Southeast Alaska, United States of America