Sea Animals That Can Hear Ultrasonic Waves. Because of the architecture of their ears and ear canals, elephants are able to pick up what are called “infrasound” waves. We cannot hear ultrasound (it has a frequency above 20,000 hz, the upper limit of human hearing).
Because of the architecture of their ears and ear canals, elephants are able to pick up what are called “infrasound” waves. We humans cannot hear ultrasound (it has a frequency above 20,000 hz, the upper limit of human hearing). They use their sensitive antennae to hear the ultrasonic chirps of bats, then pull out all the stops to save their own lives through evasion and acrobatics.