Ferromanganese crusts draping rocks (and even old sponge stalks) on Dive 17 at Fryer Guyot.

Ferromanganese crusts draping rocks (and even old sponge stalks) on Dive 17 at Fryer Guyot. Image courtesy of NOAA Office of Ocean Exploration and Research, 2016 Deepwater Exploration of the Marianas.

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Related Links

Mission Log: July 5: Leg 3: A Geological Tour of the Northern Marianas!

2016 Deepwater Exploration of the Marianas

NOAA Ship Okeanos Explorer