Photo 2 (IMAGE) National University of Singapore Caption Research team member Dr Matthias Hoffmann-Kuhnt from the Acoustic Research Laboratory at the NUS Tropical Marine Science Institute examining images of the compact sonar in operation underwater. Credit National University of Singapore Usage Restrictions NA 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.