AquaSwarm Robot Fish Project (video) Michigan State University Loading video... Caption Michigan State University engineer Xiaobo Tan and ecologist Elena Litchman are collaborating on a robot fish to monitor aquatic environments. The devices use polymers that change shape when voltage is applied to serve as efficient fins. Credit G.L. Kohuth, Michigan State University Usage Restrictions Use only in connection with this news release. 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.