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Pacific Ring of Fire Expedition.Purple anemone (~6 inches across ~15 cm) on a pumice rock alongthe east crater wall, West Rota volcano. Anemones are suspension feeders, capturing zooplankton with their tentacles. (Image credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist)