Mussel (2 of 2) (IMAGE) Penn State Caption llustration showing how strontium bioaccumulates in freshwater mussels. Credit Thomas Geeza / Penn State Usage Restrictions non commercial use 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.