Incredible But True Incredible But True Human World History Makers Cities Of The World Art And Music Sporting Headlines Plant Life Fish, Amphibians, Reptiles Birds and Mammals Creepy Crawlies Marine Life Restless Earth Earth's Secrets Changing Weather Seas And Oceans Comparisons Amazing Structures Machines And Man World Of Inventions Travelling Around Mysterious Universe	Anti-bat Signals Bats use echolocation to hunt moths on the wing. To avoid capture some moths send out signals that jam the bats' sound waves.   Previous: Back Book: Incredible But True Section: Incredible But True Chapter: Creepy Crawlies