Beautiful Lights Produced by Fireflies – 11 pics FacebookMessengerTwitterPinterestRedditFireflies are strange little insects using bioluminescence to attract mates or preys, they are indeed capable of producing a ‘cold light’ generally green or yellow. It’s truly fascinating and beautiful. 1 / 11 Pin Pages: 1 2 3 4 5 6 7 8 9 10 11