I was caught in a rainstorm, the start of Hurricane Agnes, while inside a screen tent house. as the screens of the tent became a membrane of a thin wall of water, each square in the screen became a tiny lens that magnified light. Fireflies flocked to the tent for refuge and soon hundreds of them were flashing, each flash magnified my millions of water lenses on the wet screen created such a brilliant light show that it deserves to repeated if only to present on you tube. The recreation would have the fire flies on the inside of course.