Smashing Mantis Shrimp (IMAGE) Duke University Caption The award for the fastest punch goes to mantis shrimp, which use their hammer-like appendages to smash open snail shells for food. Credit Patek lab, Duke 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.