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Contact: Gary Galluzzo
University of Iowa

Blue-Orange Aerial Shot

Caption: While most people are familiar with microbes that occur above ground -- such as this orange-colored colony surrounding Grand Prismatic Spring at Yellowstone National Park -- microbes also occur around hydrothermal vents on the ocean floor, at depths where light cannot penetrate and where they trap carbon using chemical energy instead of sunlight.

Credit: Photo by Jim Peaco, National Park Service, via Wikimedia Commons: http://en.wikipedia.org/wiki/File:Grand_prismatic_spring.jpg.

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Related news release: Deep-ocean carbon sinks

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