How Do Cicadas Wake Up After 17 Years Underground? #animalfacts #wildlife #shorts

追加: 2026-05-17

[00:00:00]How do millions of cicadas emerge from underground at the exact same time after 17 years? These insects spend almost their entire lives buried beneath the earth. No sunlight, no seasons, no clock, but somehow they know the exact year to wake up. And when the moment finally comes, millions crawl out together at once. Scientists still don't fully understand how they track time underground.