Swimming Performance of Hammerheads (VIDEO) Florida Atlantic University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Beginning in 2015, the researchers viewed hours of video of Scalloped hammerheads and Bonnetheads swimming. They looked at tail beat frequency and tail beat amplitude. They analyzed video sequentially to select clips in which sharks completed at least three full tail beat cycles of straight, steady swimming. Credit Florida Atlantic University Usage Restrictions Credit: Florida Atlantic University 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.