Low-Relief Reef (IMAGE) Virginia Institute of Marine Science Caption Underwater video footage of a sediment-covered, low-relief oyster reef. Credit © A. Colden/Virginia Institute of Marine Science. Usage Restrictions One-time use only. 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.