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Description
Close-up imagery showing barnacles covering sulphur structures on KawioBarat volcano. Their tentacles, or 'cirri', extended like blooming flowers, then folded back into the shell. The white fluff on the cirri are filaments ofbacteria that grow in the passing vent water. The barnacles hold them out toimprove growth then, apparently, withdraw to 'lick their fingers'. (Image credit: NOAA Okeanos Explorer Program, INDEX-SATAL 2010, NOAA/OER)