Another take on the idea that water turns to vapour when it is considerably warmer than its surroundings. In this picture, water is being exposed at the "tide-cracks" that form around offshore rocks and small islands when the tide rises and falls with continuous sea-ice present. As the ice is not flexible it cracks and as it does, exposes an amount of open water to the air.

Antarctic sea water varies between about +2°C and -2°C (the letter being the freezing point of sea water) over the course of a year, so in the case of this picture, the exposed sea water is more than 30°C warmer than the surrounding air. The result - it begins to turn to a vapour being so much warmer. The sunshine on this day serves to make it more visible and different temperature layers in the air cause it to rise to a band above the clearer air close to the ice surface.
 

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Paul Ward - Pentax equipment, 50mm lens, 35mm film, K64.
This picture may not be copied or used in any manner without prior written permission.