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Hydrothermal vents

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Photosynthetic green and red algae is growing on the same rocks as chemosynthetic bacteria near the top of East Diamante volcano. Usually, these two life forms are not found together because one depends on the sun for energy and the other on chemical energy from deepsea hydrothermal vents. Here in the Marana volcanic chain, however, submarine volcanoes come close to the surface.

PHOTO: Pacific Ring of Fire 2004 Expedition/NOAA

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