Learning How to Dolphin Kick and Swim the Butterfly Stroke as an Adult  Is it difficult to learn the dolphin kick and butterfly stroke as an adult? I took swimming lessons from elementary school through middle school and remembered that we had to work on flexibility when we were learning the dolphin kick? I remember doing a drill in the water where we basically had to tread water just by dolphin kicking. I haven't been swimming since freshman year of high school, and I don't think I have the strength anymore to dolphin kick frequently or do the pull for the butterfly stroke for an entire 25 yard lap. I think halfway down, my arms will hit the water one after than the other rather than simultaneously. Any insight regarding this would be helpful! Thanks! 