Casimir Liber
Adventurer
My idea is for normal rain and clouds...except the some clouds can get colonised by airborne cloud mycelium that can make gigantic colonies within clouds and solidify them. Agree food is the thing...I'm guessing there are flying insects that feed on the mushrooms and then are eaten by aerial critters...Ok, so if you want realism?
1: Why are there clouds at all? Where does the water (to generate enough water vapor to form clouds) comes from?
2: If it rains, where does the water go?
3: food concern are definitely an issue, depending on how big the floating islands are.