Here are some firefly facts. A firefly is not actually a fly, but rather a type of beetle. Most of their bio-luminescent colleagues live in the ocean, and we know of the chemical luciferin because of fireflies. Luciferin is used for some forensics testing. Fireflies are amazingly energy efficient. 90% of the firefly’s energy is converted to light, whereas only 10% of a light bulb’s energy in converted to light.
Some species of fireflies in Malaysia and in the Great Smoky Mountains of the U.S.A can synchronize their flashes in large groups.