Spider Webs

The design of naturally occurring spider webs has great potential and opportunity for water collection. Although, some are skeptical of the function of the design and technology at a large scale, it is something to keep as inspiration during water collection development.

http://physicsworld.com/cws/article/news/41622
http://www.ideaconnection.com/innovation-in-business/New-Materials-Inspired-by-Water-Catching-Properties-o-00132.html

The water collects on knots of silk connected by smooth and slender stretches of spider silk known as joints. When water reaches the knots, the condense into tightly packed structures. When other moisture in collected on the web, it is drawn toward the nearest condensed knot along the smooth segments of silk, where in accumulates into droplets.