Horton hears an underground rumble from miles away

Elephants communicate with infrasound, rumblings at frequencies too low for us to hear. The sounds travel at least 4 km (2.5 mi) through the ground; elephants listen for these with extra-sensitive feet. Each species has a complex library of calls–greetings, mating announcements, long-range group coordination–and can recognize the “voices” of family members. Check out the Elephant Listening Project, where you can listen to recordings of calls.

~ by hobzcalvin on May 6, 2008.