Cooler's Fotothing

From the Blue Lagoon.

The water’s temperature is 37-39°C / 98-102°F.
The lagoon holds six million liters of geothermal seawater, which is
renewed every 40 hours.
The seawater originates 2000 meter/6562 ft beneath the ground where
it is heated by earth’s natural forces.
The seawater is rich of minerals and has a high level of silica, good for
the skin and known for its healing power and actives.

http://www.bluelagoon.com/

;-)