In the early '70s, Roger Payne and an ocean acoustician published a theoretical paper pointing out that it was possible that sound could transmit over these large areas, but very few biologists believed it.
Ora, nei primi anni '70 Roger Payne, studioso  di acustica sottomarina, pubblicò una ricerca teorica che indicava come fosse possibile che il suono potesse attraversare  enormi distanze, ma solo pochi biologi gli credettero.