fish kick
... that although some sources have cited the fish kick as potentially the fastest way for humans to swim, it has not been widely used in competitive swimming?
... that although some sources have cited the <b id="mwAcI"><a href="./Fish_kick" id="mwAcM" rel="mw:WikiLink" title="Fish kick">fish kick</a></b> as potentially the fastest way for humans to swim, it has not been widely used in competitive swimming?