Hottest water

Last updated: October 15, 2017 at 1:25 am

Seawater shooting out of hydrothermal vents can reach temperatures up to 464°C (867°F), hot enough to melt lead. The extreme pressure at depth prevents the water from boiling. The temperature of the superheated water almost immediately drops to 2°C (35.6°F), the ambient temperature of the deep ocean.

Haase, K. M.; et al. (2007). Young volcanism and related hydrothermal activity at 5°S on the slow-spreading southern Mid-Atlantic Ridge. Geochemistry Geophysics Geosystems8 (11): Q11002.

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