Rockcod and Sea Stars (IMAGE) University of California - Davis Caption Emerald rockcod in Antarctica can handle some increases in temperature and carbon dioxide levels, but not both at the same time. With climate change, you rarely have one climate stressor without the other. Credit Rob Robbins/US Antarctic Program Usage Restrictions Provide credit 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.