There are over 2,000 individual firefly species, all within the taxonomic family of Lampyridae, which is pretty easy to remember.
And these lightning bugs with their flickering light shows make summer nights feel all the more magical and romantic.
But how did fireflies manage to catch lightning in a bottle?
The answer is found in the bug's butt, or more specifically in its abdomen, in an organ called the lantern.
This organ is a set of specialized light cells, all encased in a translucent exoskeleton.
And those light cells are where the magic happens: the phenomenon of bioluminescence, when a chemical reaction in a living thing emits light.
Fireflies aren't the only creatures that have this power.
Glowworms and certain deep-sea fish species are some of the creatures capable of producing and emitting light.
But the firefly is probably the Earth's most famous bioluminescent species.
So what's happening inside the firefly's light cells?
