(IMAGE) Smithsonian Tropical Research Institute Caption Andrew Altieri checking large mesh cage, part of experiment to exclude large fish that graze on the algae growing on corals. Credit Sean Mattson, STRI Usage Restrictions Credit: STRI 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.