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Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska. USGS and USFWS recently found that almost the entire population of Alaska-breeding bar-tailed godwits feed along sand bars near the mouth of the Kuskokwim River in autumn. These godwits spend the nonbreeding season primarily in eastern Australia an
Bar-tailed Godwits - photo taken on mudflats near Cape Avinof, Alaska. USGS and USFWS recently found that almost the entire population of Alaska-breeding bar-tailed godwits feed along sand bars near the mouth of the Kuskokwim River in autumn. These godwits spend the nonbreeding season primarily in eastern Australia an
Bar-tailed Godwit flock flying over the mudflats on Cape Avinof, western Alaska.
Bar-tailed Godwit flock flying over the mudflats on Cape Avinof, western Alaska.
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
Pacific brant feeding on submerged eelgrass at Grant Point, Izembek Lagoon, Alaska.
Pacific brant feeding on submerged eelgrass at Grant Point, Izembek Lagoon, Alaska.
A spawining sockeye salmon with it's back out of the water in a side channel of the Matanuska River.
A spawining sockeye salmon with it's back out of the water in a side channel of the Matanuska River.
Eelgrass (Zolstera marina) in Kinzarof Lagoon
Eelgrass (Zolstera marina) in Kinzarof Lagoon
Scenic view of the Matanuska River with a bridge spanning across. This photo was part of an erosion project on the river.
Scenic view of the Matanuska River with a bridge spanning across. This photo was part of an erosion project on the river.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Measuring an Arctic Grayling from the Mackenzie River in Canada. This was part of an Arctic Cisco project.
Sea Otter at Knight Island (Prince William Sound) Alaska
Sea Otter at Knight Island (Prince William Sound) Alaska
Kittlitz’s Murrelet takes flight at Kenai Fjords National Park, Alaska. The Kittlitz’s murrelet is a rare seabird that appears to be specialized for life in glacially influenced environments.
Kittlitz’s Murrelet takes flight at Kenai Fjords National Park, Alaska. The Kittlitz’s murrelet is a rare seabird that appears to be specialized for life in glacially influenced environments.
Columbia Glacer in Prince William Sound, Alaska.
Columbia Glacer in Prince William Sound, Alaska.
Bob Gill spreading the wing of a Marbled godwit on the Alaska Peninsula near Ugashik.
Bob Gill spreading the wing of a Marbled godwit on the Alaska Peninsula near Ugashik.
Marbled Godwit near Ugashik, Alaska.
Marbled Godwit near Ugashik, Alaska.
Lee Tibbitts pointing to a Marbled godwit nest on the Alaska Peninsula near Ugashik.
Lee Tibbitts pointing to a Marbled godwit nest on the Alaska Peninsula near Ugashik.
Graduate students take morphological measurements of every bird to estimate whether size affects migration strategy. Researchers measure the culmen length of a male king eider.
Graduate students take morphological measurements of every bird to estimate whether size affects migration strategy. Researchers measure the culmen length of a male king eider.
Graduate students hold a female king eider captured in June 2008 in northern Alaska. Researchers band the birds with a numbered metal band that allows individual identification. Female king eiders return to the same nesting area every year.
Graduate students hold a female king eider captured in June 2008 in northern Alaska. Researchers band the birds with a numbered metal band that allows individual identification. Female king eiders return to the same nesting area every year.
Scenic photo of McKinley Lake near Cordova, Alaska
Scenic photo of McKinley Lake near Cordova, Alaska
Townsend's Warbler held in the hand of a scientist in Anchorage, Alaska. Townsend's Warbler is a landbird.
Townsend's Warbler held in the hand of a scientist in Anchorage, Alaska. Townsend's Warbler is a landbird.
A view across the ice in the Arctic
A view across the ice in the Arctic
Female and two young-of-the-year cubs polar bears on the sea ice
Female and two young-of-the-year cubs polar bears on the sea ice