TUMS (image) Virginia Institute of Marine Science Caption Healthy oyster reefs with large, long-lived oysters can help buffer the acidity of estuarine waters in Chesapeake Bay and other coastal ecosystems worldwide. Credit Image courtesy of VIMS. Usage Restrictions One-time use only. 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.