Blue starfish on a coral reef (IMAGE) Proceedings of the National Academy of Sciences Caption Blue starfish on a coral reef, Raja Ampat, Indonesia. Image by Mark J. Costello. Credit Image credit: Mark J. Costello. 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.