Coral Section Showing Layers (image) University of California - Santa Cruz Caption Layers of coral skeleton laid down over the past 1,000 years can be seen in this polished section of a deep sea coral. Credit Photo by M. McCarthy Usage Restrictions For use with news coverage of this research only. 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.