Acropora cf. pulchra coral fragment (IMAGE) University of Guam Caption UOG graduate biology student Justin Berg holds a fragment of Acropora cf. pulchra, the species of staghorn coral that was used in an experiment about the impact of shading on corals recovering from heat stress. Credit Guam EPSCoR Program, University of Guam 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.