Porpoise Hearing Test (IMAGE) University of Southern Denmark Caption Testing porpoise hearing at research and experience center Fjord&Bælt in Kerteminde, Denmark. Credit Solvin Zankl © Fjord og Bælt- Kerteminde Usage Restrictions Must be accompanied by credits 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.