Talk:Floating Stones/@comment-76.102.75.80-20150603013921/@comment-179.219.18.181-20150913215136

My hypothesis is that the plant produces some form of gas similar to methane, or a biochemical compound lighter than water. Perhaps this chemical is highly volatile.

Imagine the vines grow these pustules that slowly inflate over time, filling with this compound, stretching the vine's membrane. The chemicals make the orbs float, but are held in place by the vines wich spawned them. A disturbance due to pressure alterations or contact causes the sensitive biochemicals inside to react, causing a violent exothermic reaction - a chemical explosion wich ruptures the membrane with a blast. This could serve as both a means of defense against predators or a mechanism to spread spores.

This is pure guesstimation of course...