<i>P. astreoides</i> (IMAGE) Woods Hole Oceanographic Institution Caption In order to better understand how corals are interacting with microbes in surrounding reef waters, the researchers set up aquaria-based experiments using colonies of the coral P. astreoides. Credit Photo by Stacy Peltier, Bermuda Institute of Ocean Sciences Usage Restrictions with proper credit 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.