Orange material, which is iron oxide encrusted microbial mats and minerals, with a soft coral visible in the distance.
Iron Oxide Mats
Image courtesy of Submarine Ring of Fire 2012: NE Lau Basin, NOAA-OER. Download larger version (jpg, 1.1 MB).

Orange material, which is iron oxide encrusted microbial mats and minerals, with a soft coral visible in the distance.

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