There are about 2000 species of fireflies in the world, however, the so-called synchronous fireflies, possessing an incredible ability to coordinate the flashes of light they produce, live in only a few corners of our planet. To see their delightful light show in the Western Hemisphere, you need to go to the United States, to the Great Smoky Mountains National Park. Four species of synchronized fireflies also live in the jungle of Southeast Asia (namely, in Malaysia, Thailand and the Philippines) Fireflies from Southeast Asia sit on trees and flare up, and do it completely synchronously. This means that they light up and go out at the same time, unlike the fireflies that live in Great Smoky Mountains, whose flashes are like a wave.