Images

A Devils Hole pupfish swims above the algae mat that typically covers the shallow spawning shelf in Devils Hole. 

USGS Cooperative Research Unit graduate student Ambre Chaudoin monitors pupfish spawning behavior in Devils Hole, the only habitat for endangered Devils Hole pupfish.

USGS Cooperative Research Unit graduate student Ambre Chaudoin monitors pupfish spawning behavior in Devils Hole, the only habitat for endangered Devils Hole pupfish.The USGS cameras that captured effects of an earthquake on Devils Hole can be seen in this picture.

Image of the silica cell wall of the diatom 'Didymosphenia geminata' from Rio Espolon, Chile. The sample was collected early in 2010 from an extensive bloom on the river. The image has been processed to show the silica cell wall, removing the organic cell contents and the stalk
material.

USGS Sirenia Project researchers studying manatees in Florida.

Deputy Assistant Secretary Deanna Archuleta tours the Bonneville Dam to view the fish ladder and in particular the native Pacific Lampreys used as first foods by Tribes along the Columbia River.

Pacific Lamprey mouth suckers adhered to the glass at Bonneville Dam fish viewing window.

The native Pacific Lamprey uses the fish ladder at Bonneville Dam.  This species plays a significant role in the foodweb and in Tribal "first foods".--cultural.

These rice plants show the difference in growth of rice plants exposed to salt when grown with and without endophytes, which are mutually beneficial microscopic fungi that live in most plants.

A newly hatched probable sturgeon larvae captured near the spawning site of PLS09-011 in Nebraska.

The Colorado Plateau lies in the Four Corners region of the southwestern United States: western Colorado, northwestern New Mexico, southeastern and eastern Utah, and northern Arizona. Most of the area is drained by the Colorado River and its main tributaries.

A desert tortoise walks in the Mojave Desert.

The White Tern is one of eight seabird species whose population density and susceptibility to sea-level rise was studied on the French Frigate Shoals' Tern Island by biologists with the USGS Pacific Island Ecosystems Research Center's Northwestern Hawaiian Islands Climate Change Project. 

John Klavitter of the US Fish and Wildlife Service, left, and USGS biologist Michelle Reynolds attach transmitters to critically endangered Laysan teal that were translocated from Laysan to Midway Island to expand the species' population and range. 

The Black Noddy (with a chick) is one of eight seabird species whose population density was studied on the French Frigate Shoals' Tern Island by biologists with the USGS Pacific Island Ecosystems Research Center's Northwestern Hawaiian Islands Climate Change Project. 

USGS biologists translocated critically endangered Laysan Teal, such as this one, from Laysan Island to Midway Island in the Northwest Hawaiian Islands to expand the species' population and range and help guard against extinction.

Katie Pugliares and Michael O'Neil with the New England Aquarium preparing a harbor seal carcass for necropsy.

Dead harbor seal found in New England in 2011.

Rockfishes inhabit oil platforms offshore of California.

Frog in the woods in Shenandoah National Park, Virginia.

This picture is taken while climbing Mt. McLoughlin looking east over the Rouge River National Forest and Klamath Lake in Southern Oregon.

Bear in apple tree in Shenandoah National Park, Virginia. Taken during field work.