Jason opens a valve at the top of one of the scoop samplers before taking a sample of microbial mat from the chimneys in the background.

Jason opens a valve at the top of one of the scoop samplers before taking a sample of microbial mat from the chimneys in the background. Image courtesy of Submarine Ring of Fire 2014 - Ironman, NSF/NOAA, Jason, Copyright WHOI.

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