Nature's Greatest Moments - Episode 89: Whale Of A Time

To us humans, the underwater world is silent, but in reality it is alive with sound. Whales call each other over distances of 24 km, selecting the exact frequency window to carry their sound most effectively. It is thought that males use higher frequency

offthefencenaturesgreatestmoments | February 20, 2009

Tags:. .underwater. .whales