Fireflies are familiar, but few realize that these insects are actually beetles, nocturnal beetles. Most fireflies are winged, which distinguishes them from other luminescent insects of the same family, commonly known as glow worms.
|Glow worm. Image:barryjnorthern.blogspot.com|
Firefly light is usually intermittent, and flashes in patterns that are unique to each species. Each blinking pattern is an optical signal that helps fireflies find potential mates, though we aren't sure exactly how the insects regulate this process to turn their lights on and off.
Other glowing animals would be those eerie-looking deep sea dwellers; angler fish, and certain species of shrimp and plankton.
|Angler fish. Image: animals.nationalgeographic.com|