Coral (IMAGE) University of Wisconsin-Madison Caption A high-power microscopic image of the skeleton from Turbinaria peltata shows a pattern of both ion-attachment (in blue) and nanoparticle attachment (in green) of new minerals to the skeleton, indicating that both systems are used to build coral skeletons. Credit Courtesy of Pupa Gilbert Usage Restrictions None 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.