Experimental Set Up (IMAGE) Hiroshima University Caption The giant clam Tridacna crocea (a) and its fecal pellets (b). 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.