Curved for Stiffness (IMAGE) Brown University Caption New research suggests fish fins may take advantage of 'functional curvature' to increase their stiffness for swimming. Credit Mandre Lab / Brown University Usage Restrictions None 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.