Waterstones

Waterstones are the water-processing stones that are commonly found on the shores of bodies of water. Waterstones grow through a unique growth and 'reproduction' cycle whilst in contact with acidic or otherwise unsafe to drink water. Starting at the size of a pebble, a single Waterstone will slowly swell to about eight inches in diameter, before cracking open and releasing another Waterstone. The resulting extra debris from this cracking open process either settles on the bottom of the body of water that the Waterstone is in, or adds to the shoreline.

There is a roughly 10% chance that when a Waterstone cracks open to release a new Waterstone that there will be two instead of just one. Waterstones that release two stones instead of one tend to swell to be nine to ten inches in diameter instead of just eight.

As Waterstones grow in size, the water they are in contact with will lose it's dangerous qualities at a comparable rate. When in continuous contact with dangerous water, a single Waterstone will take roughly three months to grow to 'full size.' Growth stops when no longer in contact with water.

The origins of Waterstones are unknown, although some speculate that they could be a result of the Old Ones.

While accurate numbers cannot be estimated due to the lack of knowledge of the size of the worlds oceans, it is estimated that it will take anywhere between 5,000 and 20,000 years for the worlds oceans to no longer be acidic at all.