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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 godwit "Z0" instrumented with an implanted Argos satellite transmitter (note dorsally exposed antenna) to facilitate aerodynamics during the species non-stop flights across the Pacific Ocean.
Bar-tailed godwit "Z0" instrumented with an implanted Argos satellite transmitter (note dorsally exposed antenna) to facilitate aerodynamics during the species non-stop flights across the Pacific Ocean.
Bar-tailed Godwit tagged Z0 near Naknek, Alaska
Bar-tailed Godwit tagged Z0 near Naknek, Alaska
Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation. Otoliths were extracted and read for ages from the fish captured in this fyke net.
Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation. Otoliths were extracted and read for ages from the fish captured in this fyke net.
Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation. Otoliths were extracted and read for ages from the fish captured in this fyke net.
Biologists checking a fyke net as part of a fish project for the Norton Sound Economic Development Corporation. Otoliths were extracted and read for ages from the fish captured in this fyke net.
An inclined plane trap on the Kwethluk River. Biologists are capturing chum salmon juvenile smolt.
An inclined plane trap on the Kwethluk River. Biologists are capturing chum salmon juvenile smolt.
Marbled Godwit on a nest near Ugashik, Alaska.
Marbled Godwit on a nest near Ugashik, Alaska.
A side channel of the Matanuska River. Results from this study were published in Curran, J.H., McTeague, M.L., Burril, S.E., and Zimmerman, C.E., 2011, Distribution, persistence, and hydrologic characteristics of salmon spawning habitats in clearwater side channels of the Matanuska River, southcentral Alaska: U.S.
A side channel of the Matanuska River. Results from this study were published in Curran, J.H., McTeague, M.L., Burril, S.E., and Zimmerman, C.E., 2011, Distribution, persistence, and hydrologic characteristics of salmon spawning habitats in clearwater side channels of the Matanuska River, southcentral Alaska: U.S.
An arctic fox in it's white winter phase. Taken during polar bear studies on the northern coast of Alaska.
An arctic fox in it's white winter phase. Taken during polar bear studies on the northern coast of Alaska.
A polar bear with hair loss (alopecia) along its neck. The bear was captured by USGS scientists using the immobilizing drug Telazol
A polar bear with hair loss (alopecia) along its neck. The bear was captured by USGS scientists using the immobilizing drug Telazol
A bearded seal on the edge of the sea ice
A bearded seal on the edge of the sea ice
Black-capped Chickadee with elongated upper beak. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Black-capped Chickadee with elongated upper beak. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Dunlin flock near Egegik, Alaska.
Dunlin flock near Egegik, Alaska.
This oblique aerial photograph from 2006 shows the Barter Island long-range radar station landfill threatened by coastal erosion. The landfill was subsequently relocated further inland, however, the coastal bluffs continue to retreat.
This oblique aerial photograph from 2006 shows the Barter Island long-range radar station landfill threatened by coastal erosion. The landfill was subsequently relocated further inland, however, the coastal bluffs continue to retreat.
Red-necked Phalarope hatchlings (chicks). The photo was taken at Prudhoe Bay, Alaska as part of nest-monitoring research.
Red-necked Phalarope hatchlings (chicks). The photo was taken at Prudhoe Bay, Alaska as part of nest-monitoring research.
Unuk River is one of the transboundary watersheds of Southeast Alaska.
Unuk River is one of the transboundary watersheds of Southeast Alaska.
Pacific sand lance catch from a beach seine in the Aleutian Islands.
Pacific sand lance catch from a beach seine in the Aleutian Islands.
Taku River is one of the transboundary watersheds of Southeast Alaska.
Taku River is one of the transboundary watersheds of Southeast Alaska.
Eric Reghr and Kristin Simac working on an anesthetized polar bear
Eric Reghr and Kristin Simac working on an anesthetized polar bear
Deformed beak Black-capped Chickadee next to peanut butter on a feeder
Deformed beak Black-capped Chickadee next to peanut butter on a feeder
A large flock of Bar-tailed Godwits flying near Egegik, Alaska
A large flock of Bar-tailed Godwits flying near Egegik, Alaska
A weir on the Snake River, near Nome, Alaska. This weir was used to count chum and coho salmon adults.
A weir on the Snake River, near Nome, Alaska. This weir was used to count chum and coho salmon adults.