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Ropy Brown Sponge
Ropy brown sponge (Agelas sp.) seen off western Puerto Rico at a depth of 78 meters (256 feet) during Exploration of Deepwater Habitats off Puerto Rico and the U.S. Virgin Islands for Biotechnology Potential.
Credit

Image courtesy of Exploration of Deepwater Habitats off Puerto Rico and the U.S. Virgin Islands for Biotechnology Potential.