Corals (IMAGE) University of Hawaii at Manoa Caption Porites corals, such as these from Ofu Island, contributed to the Pacific coral isotope record of El Niño. Credit Peter Craig, National Park Service. 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.