A yellow sponge-like organism with a porous cap and slender stalk on a dark ocean floor.
Bolosoma
Image courtesy of NOAA Ocean Exploration, 2025 Beyond the Blue. Download larger version (jpg, 819 KB).
During Dive 16 of the Papahānaumokuākea ROV and Mapping expedition, a number of large, yellow Bolosoma sponges were observed, some with heads measuring close to a meter in width.