At the Adelaide Spires vent field 20 or more active chimneys are so close they have grown together.

At the Adelaide Spires vent field 20 or more active chimneys are so close they have grown together. Image courtesy of MARUM, University of Bremen and NOAA-Pacific Marine Environmental Laboratory.

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Submarine Ring of Fire 2012: September 18 Log

Submarine Ring of Fire 2012: NE Lau Basin

NOAA Ocean Explorer Gallery