Building a Simple Reef Structure (IMAGE) North Carolina State University Caption Marine ecology researcher Enie Hensel builds an artificial reef as part of a project that evaluates which characteristics help reef fish populations thrive. Credit Hannah Levenson Usage Restrictions Photo credit must be given. 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.