Sea Ice Hole (IMAGE) Rutgers University Caption A polynya (massive sea ice hole) on Sept. 25, 2017, nine days after an atmospheric river that extended from South America to the Antarctic sea ice zone. Credit NASA 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.