Corallium rubrum (IMAGE) University of Barcelona Caption A population of Corallium rubrum which has suffered a recent mass mortality event due to a marine heatwave. The coral colonies are covered by epiphytic organisms such as polychaetes. Credit Olivier Bianchimani Usage Restrictions Credit must be given to the creator. License CC BY 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.