Counter-current swimming (IMAGE) University of Gothenburg Caption Visualization of counter-current swimming of the microswimmers to avoid high straining regions depicted with blue. Credit Illustration: Navid Mousavi Usage Restrictions None License Original 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.