Images

Erik Hofmeister, NWHC veterinarian and research scientist, holds a zebra finch, a species which serves as a laboratory model for study of avian diseases.

Elk traveling across winter range in the northwestern Greater Yellowstone Ecosystem near the Gardiner River in Yellowstone National Park, 2008.

Elk traveling on winter range in the northwestern Greater Yellowstone Ecosystem after crossing the Madison River near Ennis, Montana, 2008.

The kerchief over the bear's eyes protects it from dust and debris and reduces visual stimulation. The small tubing in its nose, known as a nasal cannula, delivers oxygen to the animal while it is tranquilized.

Researchers with IGBST have tranquilized the bear and prepare to lift it out of the trap and onto the tarp for data collection. Once on the tarp the bear is easier to move.

Whitish areas on this diseased sunflower sea star (Pycnopodia helianthoides) are lesions that result in detachment of arms from the central disc.

Photomicrograph depicting the siliceous frustules of fifty species of diatoms arranged within a circular shape. Diatoms form the base of many marine and aquatic food chains and upon death, their glassy frustules form sediments known as diatomaceous earth.

Photomicrograph depicting the siliceous frustulesof fifty species of diatoms arranged within a circular shape. Diatoms form the base of many marine and aquatic food chains and upon death, their glassy frustules form sediments known as diatomaceous earth.

The grey, coiled seashell of Olivella semistriata with the aperture (shell opening) facing up. Photograph taken 2002 or earlier.

A pair of Caracolus sagemon.

Colorful and coiled seashells of Olivella semistriata with the apertures (shell openings) facing up. Photograph taken 2002 or earlier.

An invasive species, the spiny water flea, is likely a primary driver of changes in Lake Huron's food web over the past decade.

Photo of fossil algae (dinocyst). Specimen is about 90 micrometers across.The largest known impact crater in the U.S. lies buried beneath the Virginia Coastal Plain.

Culex species mosquito biting a human hand.

Blackside dace are a type of minnow with a red underbelly and a black stripe down their sides. They are found only in parts of Tennessee, Kentucky, and western Virginia. The image shows a school of Blackside dace.

IGBST researchers begin gathering biological data from the bear.  The kerchief over the bear's eyes protects it from dust and debris and reduces visual stimulation. The small tubing in its nose, known as a nasal cannula, delivers oxygen to the animal while it is tranquilized.

An adult female polar bear and her two cubs travel across the sea ice of the Arctic Ocean north of the Alaska coast.

These live Asian swamp eels were imported from southeast Asia and sold in an urban food market in the U.S. Raw or undercooked Asian swamp eels could transmit a parasitic infection called gnathostomiasis to consumers, and wild eels could become widespread in some U.S. waters.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the calcium carbonate tests of ten species of marine foraminiferans. The image has been inverted to bring out details. Upon death, their tests can form calcareous marine sediments known as foraminiferan ooze.

A photomicrograph depicting the siliceous tests of ten species of marine radiolarians. This image has been inverted to bring out details. Upon death, their tests can form siliceous marine sediments known as radiolarian ooze.