Synchronized Fireflies

Look closely in the below video and you will see fireflies blinking in unison in the Great Smoky Mountains of Tennessee. The fireflies can sense when their neighbor fireflies are flashing and attempt to flash before them.

Long thought to be an exclusively Southeast Asian phenomenon, the behavior was only discovered in an American firefly species (P. Carolinus) in 1992. Scientists have subsequently discovered other populations in the Congaree Swamp in South Carolina and other high altitude locations in the Appalachian mountains.

Original article here.