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Sponges Hanging off a Ledge
A variety of sponges seen hanging off a ledge off southern Puerto Rico at a depth of 103 meters (338 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.