Underwater View (IMAGE) University of Delaware Caption This is an underwater look at Nikko Bay, Palau, where many coral associate with S. trenchii, a stress-tolerant zooxanthellae alga. Credit Allison Lewis 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.