Coral (IMAGE) Wildlife Conservation Society Caption Researchers studied skeletal stress bands on corals to reconstruct the history of bleaching on eight reefs in the central equatorial Pacific and use this information to better understand the thermal thresholds of their coral communities. Credit WCS 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.