Southern Ocean (IMAGE) DOE/Pacific Northwest National Laboratory Caption The exact boundaries of the Southern Ocean are as up in the air as its many clouds. Credit NASA, <a href="http://earthobservatory.nasa.gov/IOTD/view.php?id=85764" target="_blank">http://earthobservatory.nasa.gov/IOTD/view.php?id=85764</a> Usage Restrictions NASA 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.