They'll hang out in areas where they can get some protection from predators and in moist areas. Fireflies need moisture in ...

and the color is believed to warn off predators. Bioluminescent click beetles form the Pyrophorus genus. The lights they emit ...

As it turns out, bioluminescence has a number of evolutionary benefits, helping certain marine species lure prey to their mouths or serving as a defense against predators. Sara Lewis: Fireflies ...