Hydrothermal Vent Cap El Gordo

A titanium 'cap' is placed on the top of El Gordo by ROPOS, which focuses the diffuse fluid so that a fluid and microbial DNA sampler can get hydrothermal fluids samples largely undiluted by seawater. The fluid-DNA sampler is in the background. Credit: NSF-OOI/UW/ISS; Dive R1836; V15.

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