A sponge at 1600 meters depth. Brown edges of dead tissue and accumulated schmutz (organic debris) from the water column highlight the interesting 3-D shape of the sponge.

Image ID: expl2585, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Photo Date: 2005 August 18
Credit: North Atlantic Stepping Stones Science Party, IFE, URI-IAO; NOAA/OAR/OER

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