Antarctica's Southern Ocean (IMAGE) U.S. National Science Foundation Caption Researcher Stephen Riser (left) drops a float into Antarctica's Southern Ocean during a 2016-2017 cruise. Credit Greta Shum/ClimateCentral 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.