Microbial mats coated in white sulfate material were observed and sampled at several vent sites at West Mata in 2009. These mats were dominated by Epsilonproteobacteria which is a class of bacteria often associated with sulfur oxidation in marine environments.

Microbial mats coated in white sulfate material were observed and sampled at several vent sites at West Mata in 2009.  These mats were dominated by Epsilonproteobacteria which is a class of bacteria often associated with sulfur oxidation in marine environments. Image courtesy of NOAA / NSF / WHOI.

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