File:Jungle island.jpg

The Jungle Island lake, with artificially made pockets of air.

The water on Riven has unique curious properties. It seems to have an aversion to heat that can act as semi-solid, from opening pockets of air to neglecting gravity.

Gehn performed experiments to study the water. He had some water enclosed inside a closed glass bubble mounted on a portable stove. Gehn and/or the Rivenese also employed these properties for underwater transportation.[1]

He speculated that a life form that resides in it - a type of bacteria or other motile unicellular organism, that has a special structure capable of holding bits of water. These organisms appear sensitive to heat, and their combined dramatic aversion to heat sources (possibly via surface tension or a stronger force) causes the effect of the composite body of water to move accordingly. The aversion to heat is possibly explained by the organism's vulnerability to it; indeed, extended boiling or other prolonged exposure to extreme heat seems to kill them. Due to other pressing matters he abandoned his experiments and didn't confirm the nature of this phenomenon.[2]