Ice Sheet Schematic (IMAGE) U.S. National Science Foundation Caption This is an artist's representation of the aquatic system scientists believe is buried beneath the Antarctic ice sheet. Credit Zina Deretsky, NSF 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.