Dolphins (image) University of Zurich Share Print E-Mail Caption Male dolphins, despite their strong social bonds, retain their individual whistles to identify their partners and competitors. Credit Simon Allen, Dolphin Innovation Project Usage Restrictions Only with the credit. Share Print E-Mail 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.