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Hot water at 240 degrees Celius (460 degrees Fahrenheit) vents from chimneys made of sulfide minerals at the Black Forest site at East Diamante volcano. This temperature is right at the boiling point at this depth (345 m) and droplets of gas or steam can be seen escaping from some of the chimneys.

Related Links

Submarine Ring of Fire 2004

Submarine Ring of Fire 2004: April 6 Log

NOAA Ocean Explorer Gallery