Figure 1: Antarctic Coastal Polynya (IMAGE) Research Organization of Information and Systems Caption Conditions of sea ice production in Antarctic coastal polynyas. The sea water freezes, resulting in the formation of thin ice. Steam may also rise because of the difference between the air and sea water temperatures (photograph taken at Dalton polynya, September 13, 2007) Credit Takeshi Tamura Usage Restrictions Credit required 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.