Square Structure (IMAGE) Oregon State University Caption Models demonstrate that a seahorse tail with its flexible and square structure can outperform some cylindrical types of tails. Credit Image by Michael Porter, courtesy of Clemson 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.