Ice Algae (image) Aarhus University Caption The ice algae secrete gel-like substances in response to environmental stress. New research shows that this micro-gel plays an important role in polar ocean carbon budgets. Credit David N. Thomas Usage Restrictions Enclosed pictures can be used in a description of the work and must be accredited 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.