Some fireflies can flash in unison, and scientists are trying to figure out how

Orit Peleg has long been fascinated by fireflies that appear to flash in synchronicity, but she only just recently got to witness the phenomenon up close.

Firefly Science of Sex and Flash - Why Some Fireflies Flash in Unison for Sex

Love Fireflies? Here's How to Safely Catch Them - The Allegheny Front

Catching Fire, 2016: Summer

Mating dance of sea fireflies is 'the coolest fireworks show that you've ever seen

Mating dance of sea fireflies is 'the coolest fireworks show that you've ever seen

Fireflies flash in unison in 'magical' one-of-a-kind performance – The Hill

Effects of exposure wavelength and intensity on firefly flash

Firefly Science of Sex and Flash - Why Some Fireflies Flash in Unison for Sex

A composite image showing hundreds of fireflies flashing at night, upstate images backgrounds