Sea urchin development (IMAGE) University of Exeter Caption Sea urchin development in uncontaminated seawater and various concentrations of PVC nurdles Credit Dr Eva Jimenez-Guri Usage Restrictions This image may only be used with reports of this research License Original 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.