Stony corals (IMAGE) Ruhr-University Bochum Caption Stony corals are animals and related to jellyfish and sea anemones. As flower animals, they belong to the phylum of cnidarians. Credit Roberto Schirdewahn Usage Restrictions The image may only be used for reporting about the coral research at Ruhr-Universität Bochum. License Original 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.