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Images: Graduate Student Discovers an Unusual New Species

Digging in the mud for science, WHOI/MIT Joint Program graduate student Sheri Simmons collects sediment from a salt marsh so she can look for magnetotactic bacteria. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

Sheri Simmons found these magnetotactic bacteria in a Massachusetts coastal pond, which develops summertime layers of high- and low-oxygen water. Bacteria align with and move toward magnetic north or south to find these layers. The newly described "barbell" bacteria are on the right. (Photo courtesy of Sheri Simmons, WHOI)

Sheri Simmons (right) prepares samples of pond water to view bacterial inhabitants under a microscope. Her advisor, WHOI microbial geochemist Katrina Edwards, looks on. (Photo by Tom Kleindinst, WHOI)

When she can escape the lab, Sheri Simmons likes to backpack in wild places. Here she is in the Gates of the Arctic National Park, Alaska—where she met a grizzly on the trail. (Photo by Michael Desai)