Coral Reef Metrics (IMAGE) Wildlife Conservation Society Caption Researchers from the Wildlife Conservation Society and other groups have found that reefs with high coral cover may in fact be close to collapse, particularly those with a lack of fish. A recent study by WCS and its partners have found a predictable sequence of eight changes that precede a coral reef collapse. Credit Nick Graham Usage Restrictions One time usage only. Must use with the following credit: Nick Graham. 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.