Images

Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.

Close-up view of Thysanophora crinita shell viewed with a scanning electron microscope.

Miradiscops panamensis shell viewed with a scanning electron microscope with aperture facing up.

Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.

Bottom view of Chanomphalus pilsbryi shell  viewed with a scanning electron microscope.

A male perched on a pitcher

Dr. Thomas C. Michot, National Wetlands Research Center, stands atop a "marsh ball," a piece of fragmented marsh from Hurricane Andrew.

National Wetlands Research Center biologists leave their airboats to tag stems in nutria exclosures in a Louisiana wetlands.

Dr. Lee Foote, National Wetlands Research Center, studies a Louisiana marshland.

Dr. Kimberli Miller and Minnesota Sate Biologist Joe Marcino (right) examining a pelican during Newcastle disease outbreak.

Wildlife disease specialist Ronald Windingstad examines a trumpeter swan during an outbreak of histomoniasis.

Biologists search transects in a brand colony to verify detection of nests in video images collected previously.

Snow geese captured on Wrangel Island, Russia in July of 1991 and 1992. The project involved using satellite transmitters to track the migration of the geese.

The R/V Grayling trawls for fish in Lake Huron. The Center maintains five fessels, one on each of the Great Lakes, for fish stock assessment.

Glen Black of GLSC and Angela Wahlquist of Northland College places fyke net in wetland vegetation in Fish Creek Slough of Lake Superior near Ashland, Wisconsin, as part of a study of bioindicators of wetland degradation in the Great Lakes. This study is funded by the U.S.

Dr. Jacqueline Savino, fishery biologist, and Gentry Yearout, volunteer, remove fish for research from a tank in the fish holding room at the Great Lakes Science Center.

Here is a study deer after capture and being radio-collared. The tracking information from this collar will enable researchers and managers to track the migrations of mule deer and evaluate their habitat and population performance and will aid in management of mule deer populations in Wyoming.  

A hatched embryo of a pallid sturgeon. 

An American alligator and a Burmese python locked in a struggle to prevail in Everglades National Park. This python appears to be losing, but snakes in similar situations have apparently escaped unharmed, and in other situations pythons have eaten alligators.

USGS scientists Bill Orem (left) and Terry Lerch (right) recording data and collecting samples at a Balkan endemic nephropathy (BEN) household in Serbia. BEN patients typically come from small villages and are often farmers.

Two Yupik Eskimo students from Chevak, Alaska holding a tundra swan cygnet. These student volunteers were helping with an annual USGS waterfowl banding program along the Kashunuk River near the Bering Sea coast in western Alaska.