voice registers M012 bottlenose dolphins (AUDIO) University of Southern Denmark Your browser does not support the audio element. Caption Caption: The three voice registers of a bottlenose dolphin in sequence. First a few echolocation clicks (M0 register), followed by “bursts” in the M1 register and finally a “whistle” in the M2 register. Credit line: Coen Elemans, University of Southern Denmark & Peter Madsen, Aarhus University Credit Coen Elemans, University of Southern Denmark & Peter Madsen, Aarhus University Usage Restrictions w credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.