Mussel Shoreline (IMAGE) University of Chicago Caption Rocks dominated with mussels represent a prominent habitat that may be in decline as ocean pH falls and acidity increases. Credit J.T. Wootton, University of Chicago Usage Restrictions In connection with this news story only. 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.