Map of Great Barrier Reef study areas (IMAGE) University of Sydney Caption A map of the study site in the Great Barrier Reef, showing the 21 reefs analysed Credit Geological Society of America Usage Restrictions Credit must be given to the creator. License CC BY 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.