Underwater view of a robotic submersible exploring a rocky sea floor with corals.
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Pillow Basalts
This wall of pillow basalts, explored during Dive 14 of the Papahānaumokuākea ROV and Mapping expedition, was home to a diversity of corals, sponges, echinoderms, and crustaceans.
Credit

NOAA Ocean Exploration, 2025 Beyond the Blue