To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Side view of velum and nectophore during forward swimming (playback speed slowed 50x). Propulsive design principles in a multi-jet siphonophore Kelly R. Sutherland, Brad J. Gemmell, Sean P. Colin, and John H. Costello Journal of Experimental Biology 2019. 222:None-None; doi: 10.1242/jeb.198242 Download Original Video