The grayish black material is manganese oxide encrusted microbial mats and minerals. The yellow orange material is iron oxide encrusted microbial mats and minerals.

The grayish black material is manganese oxide encrusted microbial mats and minerals. The yellow orange material is iron oxide encrusted microbial mats and minerals. Image courtesy of NOAA / NSF / WHOI.

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Submarine Ring of Fire 2012: Chemoautotrophic Microbes at or near Hydrothermal Vents

Submarine Ring of Fire 2012: NE Lau Basin

NOAA Ocean Explorer Gallery