To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3 Qualitative visualization showing the horseshoe-shaped vortex formed and shed during the tail flip. Morphology, performance and fluid dynamics of the crayfish escape response Jocelyn Hunyadi, Todd Currier, Yahya Modarres-Sadeghi, Brooke E. Flammang, and Ethan D. Clotfelter Journal of Experimental Biology 2020. 223:None-None; doi: 10.1242/jeb.219873 Download Original Video