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ROV Jason holding IGT sampler during hydrothermal vent sampling.

ROV Jason holding IGT sampler during hydrothermal vent sampling.
ROV Jason holding IGT sampler during hydrothermal vent sampling.
ROV Jason holding IGT sampler during hydrothermal vent sampling.
ROV Jason holding IGT sampler during hydrothermal vent sampling.
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ROV Jason
ROV Jason holding IGT sampler during hydrothermal vent sampling.
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11/08/2014
IGT@CrabSpa.jpeg
Image Of the Day caption:
The manipulator arm of the human-occupied submersible Alvin holds an isobaric gas-tight (IGT) sampler to collect vent fluids flowing from a seafloor hydrothermal vent site in the Pacfic Ocean called Crab Spa in November 2014. The IGTs, developed at WHOI, maintain the fluids at the extreme pressures of the deep-sea environment. Stefan Sievert, who led the expedition, and colleagues were able to analyze the chemistry and the metabolic activity of microbes in the fluids. They found that these microbe-based ecosystems are surprisingly productive and play an important role supporting life higher up the food chain in the food-starved deep ocean.
Photo courtesy of Stefan Sievert, WHOI/NSF/ROVJason/2016 © Woods Hole Oceanographic Institution
© Woods Hole Oceanographic Institution
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