Ross Polynya (IMAGE) University of Cambridge Caption The Ross Polynya where solar heat is absorbed by the ocean. The vertical wall of the ice front stretches a distance of 600 km. Credit Poul Christoffersen Usage Restrictions Credit Poul Christoffersen 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.