A white glass sponge on a dark, rocky seafloor.
Glass Sponge
Image courtesy of NOAA Ocean Exploration, 2025 Beyond the Blue. Download larger version (jpg, 910 KB).
This large glass sponge was encountered at a depth of 2,094 meters (6,870 feet) during Dive 09 of the Papahānaumokuākea ROV and Mapping expedition.