Ferromanganese nodules fill the field of view. The center of each nodule may host a basaltic rock, sediment, or even a fossil.
Ferromanganese Nodules
Image courtesy of the NOAA Office of Ocean Exploration and Research, 2017 American Samoa. Download larger version (jpg, 2.5 MB).

Ferromanganese nodules fill the field of view. The center of each nodule may host a basaltic rock, sediment, or even a fossil.

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