Swimming with Giant Clams (IMAGE) Hiroshima University Caption A Hiroshima University student swims alongside the giant clam Tridacna gigas. Credit Kazuhiko Koike/Hiroshima University Usage Restrictions Image may be reused only with attribution to Hiroshima University. 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.