Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Browse images from a wide range of science topics covered by USGS. All items in this gallery are considered public domain unless otherwise noted.
Upstream view of the Middle Fork Fortymile River near U.S. Geological Survey streamgage 15331000, Middle Fork Fortymile River near mouth near Chicken, Alaska
Upstream view of the Middle Fork Fortymile River near U.S. Geological Survey streamgage 15331000, Middle Fork Fortymile River near mouth near Chicken, Alaska
Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.
Barry Arm of Harriman Fjord, Prince William Sound, Alaska. Included is Barry Glacier and Cascade Glacier.
Experimental tanks used in a juvenile Pacific salmon heat stress experiment for Chinook salmon (Oncorhynchus tshawytscha) and coho salmon (Oncorhynchus kisutch).
Experimental tanks used in a juvenile Pacific salmon heat stress experiment for Chinook salmon (Oncorhynchus tshawytscha) and coho salmon (Oncorhynchus kisutch).
A juvenile Chinook salmon (Oncorhynchus tshawytscha) used in a heat stress experiment. Alaska Department of Fish and Game’s William Jack Hernandez Sport Fish Hatchery, Anchorage, Alaska, USA.
A juvenile Chinook salmon (Oncorhynchus tshawytscha) used in a heat stress experiment. Alaska Department of Fish and Game’s William Jack Hernandez Sport Fish Hatchery, Anchorage, Alaska, USA.
This is a photo of a juvenile gull flying over water in the Aleutian Islands, Alaska.
This is a photo of a juvenile gull flying over water in the Aleutian Islands, Alaska.
Maps displaying the spatial-temporal variability in the NPPSD 3.0 dataset
Maps displaying the spatial-temporal variability in the NPPSD 3.0 dataset
Fig 1 map showing total sampling effort (strip transects) of marine bird surveys at sea in the North Pacific Pelagic Seabird Database (NPPSD).
Fig 1 map showing total sampling effort (strip transects) of marine bird surveys at sea in the North Pacific Pelagic Seabird Database (NPPSD).
Example of a photo from the USFWS fall aerial survey for geese at Izembek Lagoon. Inset shows a closer view of four Black Brant (bottom) with a Cackling Goose (top) foraging on eelgrass. Scientists from the USGS Alaska Science Center and the U.S.
Example of a photo from the USFWS fall aerial survey for geese at Izembek Lagoon. Inset shows a closer view of four Black Brant (bottom) with a Cackling Goose (top) foraging on eelgrass. Scientists from the USGS Alaska Science Center and the U.S.
Semipalmated Sandpipers with A) Leg bands only (no flag), or B) leg bands plus flag From: Leg flags do not affect shorebird nests: https://doi.org/10.1111/jofo.12264
Semipalmated Sandpipers with A) Leg bands only (no flag), or B) leg bands plus flag From: Leg flags do not affect shorebird nests: https://doi.org/10.1111/jofo.12264
A sea otter mom nursing her pup. Photo taken in Prince William Sound, Alaska. A new born sea otter needs to stay with its mother for six months to learn how to survive on its own.
A sea otter mom nursing her pup. Photo taken in Prince William Sound, Alaska. A new born sea otter needs to stay with its mother for six months to learn how to survive on its own.
A young sea otter foraging for small invertebrates off an emergent rock covered with seaweed, snails, and barnacles. Photo taken in Prince William Sound, Alaska.
A young sea otter foraging for small invertebrates off an emergent rock covered with seaweed, snails, and barnacles. Photo taken in Prince William Sound, Alaska.
Red plumes burst out from the tops of these chemosynthetic tubeworms, capturing hydrogen sulfide and oxygen from the surrounding water to feed their bacterial endosymbionts. The tubeworm tubes provide a habitat for several benthic animals, including the pale pink branching octocorals seen here
Red plumes burst out from the tops of these chemosynthetic tubeworms, capturing hydrogen sulfide and oxygen from the surrounding water to feed their bacterial endosymbionts. The tubeworm tubes provide a habitat for several benthic animals, including the pale pink branching octocorals seen here
Infographic showing water temperature and discharge (flow) data from rivers with heat-related salmon mortality, drought-related salmon mortality, and normal salmon survival in Alaska during 2019.
Infographic showing water temperature and discharge (flow) data from rivers with heat-related salmon mortality, drought-related salmon mortality, and normal salmon survival in Alaska during 2019.
The USGS boat at the Stikine River gage site, Alaska. The Stikine River is one of the transboundary watersheds of Southeast Alaska. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
The USGS boat at the Stikine River gage site, Alaska. The Stikine River is one of the transboundary watersheds of Southeast Alaska. Visit USGS Transboundary River Monitoring in Southeast Alaska for more information about our research.
The USGS crew heads upriver early one winter day and sees an increible sunrise on the Stikine River.
The USGS crew heads upriver early one winter day and sees an increible sunrise on the Stikine River.
USGS Geneticist Damian Menning is performing eDNA sampling at Grant Point in Izembek National Wildlife Refuge, Alaska. This eDNA sampling is part of a project looking for eelgrass (Zostera marina) pathogens in the North Pacific. Izembek NWR is on the Alaska Peninsula located between the Bering Sea and the Gulf of Alaska.
USGS Geneticist Damian Menning is performing eDNA sampling at Grant Point in Izembek National Wildlife Refuge, Alaska. This eDNA sampling is part of a project looking for eelgrass (Zostera marina) pathogens in the North Pacific. Izembek NWR is on the Alaska Peninsula located between the Bering Sea and the Gulf of Alaska.
Keychain developed for USGS outreach activities about bird banding and reporting in Inupiaq and English. Inupiaq translation provided by Qaiyaan and Jana Harcharek.
Keychain developed for USGS outreach activities about bird banding and reporting in Inupiaq and English. Inupiaq translation provided by Qaiyaan and Jana Harcharek.
USGS Hydrologist Randy Host performs compass calibrations for discharge measurements at the Unuk River. The Unuk River is one of the transboundary watersheds of Southeast Alaska. This site has a Super Gage which is a conventional streamflow gage equipped with continuous water-quality monitors.
USGS Hydrologist Randy Host performs compass calibrations for discharge measurements at the Unuk River. The Unuk River is one of the transboundary watersheds of Southeast Alaska. This site has a Super Gage which is a conventional streamflow gage equipped with continuous water-quality monitors.
USGS scientists Matthew Smith, Caitlin Marsteller, and Danielle Gerik necropsy Common Murres and harvest tissues to test for harmful algal bloom toxins.
USGS scientists Matthew Smith, Caitlin Marsteller, and Danielle Gerik necropsy Common Murres and harvest tissues to test for harmful algal bloom toxins.
Tundra swan on the Colville River Delta, Alaska 2013.
Tundra swan on the Colville River Delta, Alaska 2013.
Beaver dam and lodge on the Wrench Creek, Noatak National Preserve
Beaver dam and lodge on the Wrench Creek, Noatak National Preserve