Pacific Ring of Fire Expedition. At East Diamante volcano (195 m water depth), tropical fish swim above boulders covered with bacterial mat, which indicates the presence of hydrothermal venting. These fish live in the reef community above and are about 15 cm long (6 in).

Image ID: expl0021, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Mariana Arc region, Western Pacific Ocean
Photo Date: 2004 April
Credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist

• High Resolution Photo Available