The Great Barrier Reef in 2010 (IMAGE) University of Tokyo Caption An international research team including University of Tokyo geochemist Professor Yusuke Yokoyama collected core samples of ancient coral reefs for research projects that reveal ancient sea levels and may improve future climate prediction models. No living coral is harmed while collecting samples of ancient reefs. Credit Image by Hironobu Kan Usage Restrictions Re-use only with attribution to Hironobu Kan. Creative Commons license CC BY-ND. 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.