Polyps of a Porites Coral (IMAGE) University of Southampton Caption Polyps of a Porites coral are hosting the newly discovered symbiotic alga. Credit D'Angelo, Wiedenmann, Burt 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.