Images

Silver carp are a large a troublesome invasive species from Asia found in the great rivers of the central United States. Silver carp have been observed to jump in response to rocks thrown in the water, passing trains, geese taking off from the water, or just when they unexpectedly find themselves in a tight place.

The endangered Devils Hole pupfish lives only in Devils Hole in the Mojave Desert.

A USGS technician collects a water sample at the Faka Union Canal Weir #1, Collier County, Florida. The sample was used to help determine the source of the warm water responsible for the site's popularity among manatees as a warm water refuge.

Breton Island calm conditions weather scenario.

High resolution satellite imagery showed the landscape and building damages before and after the magnitude-7 earthquake hit Haiti in the beginning of 2010. This image was taken before the earthquake.

You may notice a green, red or brown film on your favorite boating or swimming area in the summer. This coloring could mean that the water is affected by harmful algal blooms. Harmful algal blooms are an accumulation of tiny organisms known as algae and can release harmful toxins into the environment.

View of the western edge of the western ocean entry delta near Kalapana.

The Puhiokalaikini entry continues to expand eastward, as small pahoehoe toes advanced on the new black sand beach below the seacliff.

View looking toward the ocean entries in the distance. The 'Ili'ili entry is marked by the tiny plume to the left. The very broad Puhiokalaikini entry comprises the rest of the plumes along the shoreline. The tube system feeding the ocean entries is delineated by the fume in the foreground.

Madison river  weather station site, Shenandoah National Park.

Weather station site, Shenandoah National Park.

Scientists pull a seine net through a blocked-off section of a man-made ditch to estimate fish abundance.

Scientists pull a seine net through an intertidal creek to estimate fish abundance.

Sunrise over a mangrove shoreline, Shark River, Everglades National Park.

USGS scientist measures water velocity as part of estimating flow from a mangrove forest.

Seining for fish in open water necessitates closing the seine quickly to avoid fish escape.  Closing the seine around a pole offshore accomplishes this objective in sampling.

Tide pools provide habitat for a wide variety of Puget Sound flora and fauna.  During low tides, the captive inhabitants of tide pools may be closely inspected. 

USGS SCEP displays juvenile tarpon captured in a poorly-connected tidal pond.

Lava was only slowly oozing from the edge of the flow adjacent to the road. In this photo, a piece of shrubbery is slowly consumed by the lava.

Deer in Shenandoah National Park.

Tree after spring blizzard.