Dead, Eroded Mussels (IMAGE) University of Chicago Caption Dead mussels as well as live mussels with open, eroded shells are possible symptoms of stress from declining ocean pH and increasing acidity. Credit C.A. Pfister, University of Chicago Usage Restrictions Only in connection with this news story. 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.