Middle Reef (2 of 2) (image) University of Exeter Caption Rapid rates of coral reef growth have been identified in sediment-laden marine environments, conditions previously believed to be detrimental to reef growth. A new study has established that Middle Reef - part of Australia's iconic Great Barrier Reef - has grown more rapidly than many other reefs in areas with lower levels of sediment stress. This image shows Middle Reef from above the water. Credit University of Exeter Usage Restrictions For one use only - to accompany this story. 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.