Bleached Coral (IMAGE) Oregon State University Caption This coral, which was part of a scientific study, is bleached as a result of exposure to elevated levels of nitrogen and phosphorus. Credit (Photo courtesy of Oregon State University) Usage Restrictions None 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.