Ocean Scientist Melissa Pespeni (IMAGE) University of Vermont Caption University of Vermont biologist Melissa Pespeni examines two purple sea urchins. Credit Joshua Brown/UVM Usage Restrictions with coverage of associated 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.