Underwater view of ocean floor with rocks and a submarine component on the right.

Basalt Nodules

Image courtesy of NOAA Ocean Exploration, 2025 Beyond the Blue. Download larger version (jpg, 1.26 MB).

An image of the manganese-encrusted basalt nodules that dotted a sedimented seafloor throughout Dive 01 of the Papahānaumokuākea ROV and Mapping expedition.