A grooved brain coral, a massive starlet coral and a boulder brain coral growing under mangrove prop roots.
Images
Images
A grooved brain coral, a massive starlet coral and a boulder brain coral growing under mangrove prop roots.
The Souris River mostly covered in snow.
The Souris River mostly covered in snow.
An adult male elephant seal at Año Nuevo State Natural Reserve in California. This "loser" has been pushed out to the periphery of the mating bull's harem.
An adult male elephant seal at Año Nuevo State Natural Reserve in California. This "loser" has been pushed out to the periphery of the mating bull's harem.
As part of an investigation of the mechanisms of coastal change in the Carolinas, instrumented tripods were deployed on Diamond Shoals near Cape Hatteras, NC.
As part of an investigation of the mechanisms of coastal change in the Carolinas, instrumented tripods were deployed on Diamond Shoals near Cape Hatteras, NC.
As part of an investigation of the mechanisms of coastal change in the Carolinas, instrumented tripods were deployed on Diamond Shoals near Cape Hatteras, NC. These tripods recorded data quantifying the currents, waves, turbidity, temperature and salinity at several levels near the seafloor between January and April 2009.
As part of an investigation of the mechanisms of coastal change in the Carolinas, instrumented tripods were deployed on Diamond Shoals near Cape Hatteras, NC. These tripods recorded data quantifying the currents, waves, turbidity, temperature and salinity at several levels near the seafloor between January and April 2009.
View of Carson Valley looking west to the Sierra Nevada Mountains. The houses in the distance use a septic system for waste disposal and a domestic well for water supply.
View of Carson Valley looking west to the Sierra Nevada Mountains. The houses in the distance use a septic system for waste disposal and a domestic well for water supply.
This photo shows a snow plow and road salt application truck that is used to clear snow and ice from roadways for improving traffic and pedestrian safety. The use of salt to deice pavement can be harmful to aquatic life in urban streams. The USGS is involved in studies that focus on the influence of winter runoff on aquatic ecosystems.
This photo shows a snow plow and road salt application truck that is used to clear snow and ice from roadways for improving traffic and pedestrian safety. The use of salt to deice pavement can be harmful to aquatic life in urban streams. The USGS is involved in studies that focus on the influence of winter runoff on aquatic ecosystems.
This striking Flower Coral (Eusmilia fastigiata) grows with an assortment of sponges among Red Mangrove prop roots.
This striking Flower Coral (Eusmilia fastigiata) grows with an assortment of sponges among Red Mangrove prop roots.

A Queen Angelfish Swims in Front of Coral Colonies of Several Species Growing in Mangroves Within Virgin Islands Coral Reef National Monument
linkThis photo shows a mangrove ecosystem that may be unique in the Caribbean in terms of the abundance and diversity of corals.
A Queen Angelfish Swims in Front of Coral Colonies of Several Species Growing in Mangroves Within Virgin Islands Coral Reef National Monument
linkThis photo shows a mangrove ecosystem that may be unique in the Caribbean in terms of the abundance and diversity of corals.
A USGS scientist takes a sample from a northern pintail duck (Anas acuta) to be tested for avian influenza.
A USGS scientist takes a sample from a northern pintail duck (Anas acuta) to be tested for avian influenza.

A filtered vertical laser image, taken using a technique called light detection and ranging (LIDAR), of part of the Hayward Fault (red lines) in the City of Berkeley. The fault passes through the University of California Berkeley football stadium (left), and past earthquake movements have significantly offset Hamilton Gulch (center).
A filtered vertical laser image, taken using a technique called light detection and ranging (LIDAR), of part of the Hayward Fault (red lines) in the City of Berkeley. The fault passes through the University of California Berkeley football stadium (left), and past earthquake movements have significantly offset Hamilton Gulch (center).

ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake.
ShakeMap showing the inferred intensity of ground shaking in the 1868 earthquake (measured as MMI, or Modified Mercalli Intensity), compared to a ShakeMap for the 1989 magnitude 6.9 Loma Prieta earthquake.
Many species of corals grow directly on or near the Red Mangrove prop roots.
Many species of corals grow directly on or near the Red Mangrove prop roots.
Taylor Slough in the setting sun.
Taylor Slough in the setting sun.
Exposed limestone near Pedernales Falls, Pedernales Falls State Park
Exposed limestone near Pedernales Falls, Pedernales Falls State Park
A Common Octopus (Octopus vulgaris) leaves his den to hunt for conchs and clams.
A Common Octopus (Octopus vulgaris) leaves his den to hunt for conchs and clams.
Wintering population at Lacassine NWR, LA
Wintering population at Lacassine NWR, LA
Squall line approaching freshwater marsh at Lacassine NWR, LA
Squall line approaching freshwater marsh at Lacassine NWR, LA
Winner in category, 33rd annual USGS phot contest 2009. Not a real entry--just thought you'd want a copy
Winner in category, 33rd annual USGS phot contest 2009. Not a real entry--just thought you'd want a copy
Canyon Lake, November 2008. Photograph by Sam Price, U.S. Army Corps of Engineers.
SIR 2012–5202
Canyon Lake, November 2008. Photograph by Sam Price, U.S. Army Corps of Engineers.
SIR 2012–5202
Wetlands Reserve Program site in Morehouse Parish, Louisiana. Green tree frogs rest on a Wetlands Reserve Program easement boundary sign in Morehouse Parish, Louisiana.
Wetlands Reserve Program site in Morehouse Parish, Louisiana. Green tree frogs rest on a Wetlands Reserve Program easement boundary sign in Morehouse Parish, Louisiana.