A dense field of potential polymetallic nodules, each about the size of a tennis ball, seen during the beginning of Dive 06 of the 2026 Cook Islands ROV Exploration
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Nodules from Dive 06
Dive 06: A dense field of polymetallic nodules, each about the size of a tennis ball, seen at a depth of approximately 4,950 meters (3.1 miles) during Dive 06 of the 2026 Cook Islands ROV Exploration cruise, near the bottom of “B1 Seamount.”
Credit

NOAA Ocean Exploration, 2026 Cook Islands ROV Exploration.