Healthy and Degraded Coral Reefs (image) European Association of Geochemistry Share Print E-Mail Caption The left side of this photo shows a healthy reef at Heron Island. The right side shows an example of a degraded reef off Townsville after attack from Crown of Thorns and bleaching. Credit Reproduced with Kind permission of Ove Hoegh-Guldberg, Global Change Institute at the University of Queensland Usage Restrictions None Share Print E-Mail 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.