To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 A sei whale performs a non-feeding surfacing, a surface lunge, and a skim-feeding event. The surface lunge and skim are the sequence shown in Figure 1. Biomechanically distinct filter-feeding behaviors distinguish sei whales as a functional intermediate and ecologically flexible species Paolo S. Segre, Caroline R. Weir, Andrew Stanworth, Steve Cartwright, Ari S. Friedlaender, and Jeremy A. Goldbogen Journal of Experimental Biology 2021. 224:None-None; doi: 10.1242/jeb.238873 Download Original Video