Emily Donham with red sea urchin (IMAGE) University of California - Santa Cruz Caption Red sea urchins are an important commercial fishery species along the California coast. Emily Donham and other UCSC researchers studied how different populations of red sea urchins respond to changes in their environments. Credit Photo by Kate Vylet Usage Restrictions For use only with news coverage 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.