The Calving Front of Thwaites Ice Shelf (image) NASA/Goddard Space Flight Center Caption This photo shows the calving front of Thwaites Ice Shelf looking at the ice below the water's surface. Note how the water acts as a blue filter. Credit NASA / Jim Yungel Usage Restrictions None 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.