A thick, flat, white sponge (Petrosiidae) with gray zoanthids on it seen off northwestern Puerto Rico at a depth of 109 meters (358 feet) during Exploration of Deepwater Habitats off Puerto Rico and the U.S. Virgin Islands for Biotechnology Potential.
White Sponge With Zoanthids
Image courtesy of Exploration of Deepwater Habitats off Puerto Rico and the U.S. Virgin Islands for Biotechnology Potential.
Download largest version (jpg, 5.55 MB).

A thick, flat, white sponge (Petrosiidae) with gray zoanthids on it seen off northwestern Puerto Rico at a depth of 109 meters (358 feet) during Exploration of Deepwater Habitats off Puerto Rico and the U.S. Virgin Islands for Biotechnology Potential.