A threatened sicklefin redhorse from the Tennessee River.
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Sicklefin Redhorse
A threatened sicklefin redhorse from the Tennessee River.
Endangered Holiday Darter
An endangered holiday darter (Amicalola population). Darters are among the most threatened Southeastern fish; they have been likened to aquatic canaries.
An endangered holiday darter (Amicalola population). Darters are among the most threatened Southeastern fish; they have been likened to aquatic canaries.
Alabama Sturgeon
An endangered Alabama sturgeon from the Mobile River.
An endangered Alabama sturgeon from the Mobile River.
Aerial of Beaver Creek, Alaska
Aquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
Aquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
The USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit Eruption
The USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit EruptionThe USGS Hawaiian Volcano Observatory (foreground) is located on the caldera rim of Kilauea Volcano, Hawai'ithe most active volcano in the world. The observatory's location provides an excellent view of summit eruptive activity, which began in 2008.
The USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit Eruption
The USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit EruptionThe USGS Hawaiian Volcano Observatory (foreground) is located on the caldera rim of Kilauea Volcano, Hawai'ithe most active volcano in the world. The observatory's location provides an excellent view of summit eruptive activity, which began in 2008.
USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit Eruption
USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit EruptionThe USGS Hawaiian Volcano Observatory (foreground) is located on the caldera rim of Kilauea Volcano, Hawai'i—the most active volcano in the world. The observatory's location provides an excellent view of summit eruptive activity, which began in 2008.
USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit Eruption
USGS Hawaiian Volcano Observatory Monitors Kilauea's Summit EruptionThe USGS Hawaiian Volcano Observatory (foreground) is located on the caldera rim of Kilauea Volcano, Hawai'i—the most active volcano in the world. The observatory's location provides an excellent view of summit eruptive activity, which began in 2008.
USGS Hawaiian Volcano Observatory
The USGS Hawaiian Volcano Observatory is perched on the rim of Kilauea Volcano's summit caldera (next to the Thomas A. Jaggar Museum in Hawai'i Volcanoes National Park), providing a spectacular view of the active vent in Halema‘uma‘u Crater.
The USGS Hawaiian Volcano Observatory is perched on the rim of Kilauea Volcano's summit caldera (next to the Thomas A. Jaggar Museum in Hawai'i Volcanoes National Park), providing a spectacular view of the active vent in Halema‘uma‘u Crater.
Meandering Stream on the North Dakota Plains
A meandering stream that was a possible biomonitoring site for a USGS project in North Dakota.
A meandering stream that was a possible biomonitoring site for a USGS project in North Dakota.
Barrow, Alaska
This is a view of Barrow, Alaska from a helicopter.
This is a view of Barrow, Alaska from a helicopter.
Polar Bears along Arctic Sea Ice
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
Polar Bears along Arctic Sea Ice
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
Polar Bears along Arctic Sea Ice
Polar bears along sea ice in the Arctic Ocean.
Polar bears along sea ice in the Arctic Ocean.
Arctic Sea Ice
Image of sea ice along the Arctic Ocean. This is the bow of U.S. Coast Guard Cutter Healy.
Image of sea ice along the Arctic Ocean. This is the bow of U.S. Coast Guard Cutter Healy.
Arctic Sea Ice
Image of sea ice along the Arctic Ocean.
Image of sea ice along the Arctic Ocean.
Arctic Sea Ice
Image of sea ice along the Arctic Ocean. This image was taken while onboard U.S. Coast Guard Cutter Healy.
Image of sea ice along the Arctic Ocean. This image was taken while onboard U.S. Coast Guard Cutter Healy.
Arctic Sea Ice
Image of sea ice along the Arctic Ocean.
Image of sea ice along the Arctic Ocean.
Arctic Sea Ice
This is an image of nilas, which is thin ice, in the Arctic Ocean. As nilas comes together like fingers, which is known as finger rafting, it creates thicker ice called young ice.
This is an image of nilas, which is thin ice, in the Arctic Ocean. As nilas comes together like fingers, which is known as finger rafting, it creates thicker ice called young ice.
Arctic Sea Ice
Image of sea ice along the Arctic Ocean.
Image of sea ice along the Arctic Ocean.
Arctic Sea Ice
Image of Arctic sea ice.
Arctic Sea Ice
A piece of multi-year Arctic sea ice surfacing on its side. You can tell it is older ice as the color is a bright blue underneath. There is also a dusting of snow on the top.
A piece of multi-year Arctic sea ice surfacing on its side. You can tell it is older ice as the color is a bright blue underneath. There is also a dusting of snow on the top.
Arctic Sea Ice
Image of Arctic sea ice.