Images

Spawning sea lampreys tagged for a study of sea lamprey sex pheromone antagonists.

Sea lamprey spawning during a study of sea lamprey sex pheromone antagonists, altered pheromone cocktails that can disrupt spawning behavior.

Sea lampreys attached to lake trout in a tank at Hammond Bay Biological Station.

A sea lamprey tagged with a red LED light as part of a study of sex pheromone antagonists, altered sex pheromone compounds that can interfere with sea lamprey spawning.

This rat snake is a preserved museum specimen with snake fungal disease that was collected in Tennessee in 1973. The photo was taken at the USGS National Wildlife Health Center in 2017 as part of a study.

Fly fishing for trout in one on Montana's rivers.                                                             

Rain Gauge installed after the 2020 Grizzly Creek fire in Glenwood Canyon, Colorado. Scientists installed a network of rain gauges and soil moisture sensors throughout the rugged burn area. These instruments provide real-time data on rainfall intensity and duration, which are critical factors in determining the likelihood of a debris flow. 

Rain gauge installed in Glenwood Canyon, Colorado. After the 2020 Grizzly Creek fire, scientists installed a network of rain gauges and soil moisture sensors throughout the rugged burn area. These instruments provide real-time data on rainfall intensity and duration, which are critical factors in determining the likelihood of a debris flow. 

Rain gauge in Glenwood Canyon, Colorado. After the 2020 Grizzly Creek fire, scientists installed a network of rain gauges and soil moisture sensors throughout the rugged burn area. These instruments provide real-time data on rainfall intensity and duration, which are critical factors in determining the likelihood of a debris flow. 

 A USGS scientist wearing black gloves is collecting a sample of tap water from the kitchen sink using small plastic vials to test for PFAS.

Scientists from the U.S.

Scientists from the U.S.

Scientists from the U.S.

Scientists from the U.S.

Scientists from the U.S.

Everglades National Park in South Florida is the largest subtropical wetland ecosystem in North America, consisting of about 1.5 million acres of mangrove forests and other coastal wetlands. Mangroves are salt-tolerant trees that thrive amidst the harsh growing conditions of the coast.

In the Mississippi River Birdfoot Delta, there is intense vegetation loss in marshes farthest away from the river, as indicated by high values of UVVR (shown in pink).

Within the busy boroughs of Brooklyn and Queens, New York City, is Jamaica Bay—a complex urban ecosystem almost the size of Manhattan that consists of salt marsh islands, various waterways, meadowlands and two freshwater ponds.

The Prime Hook National Wildlife Refuge in Delaware is the site of a \$40 million tidal marsh restoration project—one of the largest restoration projects ever in the eastern U.S. With this project, the U.S.

Four close-up images of a longer sediment core (bottom). The light coloring indicates coarser sand that likely occurred from overwash flooding during a previous hurricane. This is one of a few cores collected in northwest Florida by the USGS and partners to help understand past hurricane activity in the Gulf of Mexico and northern Atlantic Ocean.

Two samples of beach sediment from Ichinomiya, Japan. This beach was the likely source for the sand used in the balloon bombs.