Dr. Frederieke Kroon Looking at a Crown-Of-Thorns Starfish on the Great Barrier Reef (image) Australian Institute of Marine Science Share Print E-Mail Caption Dr. Frederieke Kroon looking at a crown-of-thorns starfish on the Great Barrier Reef. Credit D.Westcott/CSIRO Usage Restrictions Image may only be used with appropriate credit. Share Print E-Mail 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.