Closeup of Coral (IMAGE) Penn State Caption According to a new study, coral's ability to respond to warming ocean temperatures may depend in part on the amount of iron in the environment. Credit Penn State Usage Restrictions Credit must be provided. 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.