The dive started on a flat bottom of moderately large manganese nodules covering a lighter-colored sediment primarily occupied by large hexactinellid sponges approximately 0.5 to 1 meter tall.

The dive started on a flat bottom of moderately large manganese nodules covering a lighter-colored sediment primarily occupied by large hexactinellid sponges approximately 0.5 to 1 meter tall. Image courtesy of the NOAA Office of Ocean Exploration and Research, 2017 Laulima O Ka Moana.

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