Pacific Ring of Fire Expedition. Sampling hydrothermal vent fluids at Cave vent, using the Hot Fluid Sampler (HFS). The white coating on the rocks is bacterial mat. The sampling nozzel is 25 cm (10 in).

Image ID: expl0033, 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

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