Water collection

Questions:

1. What animals can extract water from their surrounding? Obviously I'm not talking about tapping running water.
2. Are there insects that can trap water with their bodies? Is there something in nature that could be emulated to capture free vapour?
3. Are there any studies on condensation efficiency at given temperatures? Is there an optimal range? Is this affected by atmospheric pressure and if so how?

Test

Mission:

1. Find way to purify water
2. Generate water from airborne moisture
3. Generate electricity from wind using multiple, smaller, wind fans instead of one large one