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Image: Buffalo Trunkfish (Lactophrys trigonus)
Buffalo Trunkfish (Lactophrys trigonus)
Buffalo Trunkfish (Lactophrys trigonus)
Buffalo Trunkfish (Lactophrys trigonus)

The Buffalo Trunkfish (Lactophrys trigonus) is larger and less abundant than the Spotted and Smooth Trunkfishes seen frequently in the mangroves.

The Buffalo Trunkfish (Lactophrys trigonus) is larger and less abundant than the Spotted and Smooth Trunkfishes seen frequently in the mangroves.

Image: Reef Urchin (Echinometra viridis)
Reef Urchin (Echinometra viridis)
Reef Urchin (Echinometra viridis)
Reef Urchin (Echinometra viridis)

Bright red Reef Urchins (Echinometra viridis) graze on algae growing on prop roots and rocks in shallow water.

Bright red Reef Urchins (Echinometra viridis) graze on algae growing on prop roots and rocks in shallow water.

Image: Birds Taking Flight
Birds Taking Flight
Birds Taking Flight
Birds Taking Flight

Four species of waterbirds in a protected wetland.

Image: \Multiple Species Waterbird
\Multiple Species Waterbird
\Multiple Species Waterbird
\Multiple Species Waterbird

Four species of waterbirds in a protected wetland.

Image: Birds Taking Flight
Birds Taking Flight
Birds Taking Flight
Birds Taking Flight

Four species of waterbirds in a protected wetland.

Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory

Instrument piers in newly constructed building after equipment installation at Deadhorse geomagnetic observatory.

Instrument piers in newly constructed building after equipment installation at Deadhorse geomagnetic observatory.

Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory

Data acquisition system at Deadhorse geomagnetic observatory.

Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory

Display computer in Commo shack at Deadhorse geomagnetic observatory.

Image: Maple River Dam Overflow Chute
Maple River Dam Overflow Chute
Maple River Dam Overflow Chute
Maple River Dam Overflow Chute

Water flowing over the baffles of the overflow chute at streamgage 05059715 Maple River at Maple River Dam near Sheldon, North Dakota, streamflow 1,750 cubic feet per second, March 28 or 29, 2010.

Water flowing over the baffles of the overflow chute at streamgage 05059715 Maple River at Maple River Dam near Sheldon, North Dakota, streamflow 1,750 cubic feet per second, March 28 or 29, 2010.

Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Image: Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory
Deadhorse Geomagnetic Observatory

Absolutes electronics at Deadhorse geomagnetic observatory.

Image: Coral Reef  at Hurricane Hole USVI
Coral Reef at Hurricane Hole USVI
Coral Reef at Hurricane Hole USVI
Coral Reef at Hurricane Hole USVI

Image of  several species of coral growing on and near the prop roots of red mangrove trees.  Sponges, feather duster worms, and sea grass also appear in the picture.

Image of  several species of coral growing on and near the prop roots of red mangrove trees.  Sponges, feather duster worms, and sea grass also appear in the picture.

Image: Flooding on the Kennebunk River
Flooding on the Kennebunk River
Flooding on the Kennebunk River
Flooding on the Kennebunk River

The USGS has been monitoring the Kennebunk River near Kennebunk, Maine since June 2008 and the peak discharge for the period of record occurred in February 2010.

Cheney Reservoir, KS
Cheney Reservoir, KS
Cheney Reservoir, KS
Cheney Reservoir, KS

Water sample collection on ice-covered Cheney Reservoir, Kansas

Close-up of manatee calf underwater
Curious manatee calf approaches scientist at Crystal River, Florida
Curious manatee calf approaches scientist at Crystal River, Florida
Curious manatee calf approaches scientist at Crystal River, Florida

A curious manatee calf encounters a snorkeling scientist as the USGS Sirenia Project conducts fieldwork at Crystal River National Wildlife Refuge, Florida

Image: Filtered Ash Leachate Sample
Filtered Ash Leachate Sample
Filtered Ash Leachate Sample
Filtered Ash Leachate Sample

Janelle Dyer dispenses a filtered ash leachate sample into a sample bottle for ion chromatography analysis for anions such as fluoride, chloride, sulfate, and nitrate.

Janelle Dyer dispenses a filtered ash leachate sample into a sample bottle for ion chromatography analysis for anions such as fluoride, chloride, sulfate, and nitrate.

Image: Sling-load
Sling-load
Sling-load
Sling-load

Eco-Hydrologist Karen Balentine directs a sling-load drop in Everglades National Park.

Eco-Hydrologist Karen Balentine directs a sling-load drop in Everglades National Park.

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