Sperm Whale and Dolphin (AUDIO) University of East Anglia Your browser does not support the audio element. Caption Sperm whale and dolphin echolocation clicks, recorded in the Mediterranean Sea. Credit University of East Anglia Usage Restrictions None License Licensed 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.