Million Dollar Reefs (IMAGE) University of California - Santa Cruz Caption Each kilometer of the highlighted reefs on this map of Oahu provides over $1 million in flood protection benefits each year. Credit Map by Chris Lowrie and Jessica Kendall-Bar Usage Restrictions For use only with news coverage of this research 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.