Pacific Ring of Fire Expedition. The vent mussel Bathymodiolus: water is drawn through the siphons at the open end to the left; the foot extends on the right and attaches the mussel to the rock with byssal threads. [The mussels are up to 18 cm (7in) long.]

Image ID: expl0086, 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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