Oyster (3 of 3) (IMAGE) U.S. National Science Foundation Caption Oysters use a chemical cement to bond to each other, a material that differs significantly from the chemistry of their shells or the chemistry of other marine organism adhesives. Credit Jonathan Wilker, Purdue University Usage Restrictions None 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.