Did you know? Fireflies aren’t flies at all: they're beetles! Of all of the insects in the world, fireflies are among the few to have evolved an extraordinary language of light. Many fireflies use a system of flashes in some of the same ways we use words: to attract, to say, “Here I am,” even to deceive. They emit light from a tiny organ, called a lantern, on the underside of their abdomen, where a biochemical reaction takes place within specialized cells called photocytes. The reaction releases energy in the form of light.
Photo: Jessica Lucia, CC BY-NC-ND 2.0, flickr
