Michael Phelps slow-mo butterfly. Check out those freak flipper feet.
Michael Phelps - now that's a butterfly! That is a GORGEOUS shot!!! #swimming #training #love
FITNESS | water
Michael Phelps wins 100-meter butterfly in Arena Pro Swim Series... #MichaelPhelps: Michael Phelps wins 100-meter butterfly… #MichaelPhelps
Michael Phelps during the 200-meter butterfly final
2016 Rio Olympics
The Dolphin Kick Technique in the Butterfly Stroke
Michael Phelps qualifies for 100 butterfly stroke and Missy Franklin qualifies for 200 meter backstroke for Rio Olympics at U.S. swimming trials
Michael Phelps wins the 200 butterfly to make the U.S. Olympic team for Rio.
2014 '16 Olympics
Everybodyswim : Butterfly stroke (+playlist)
Michael Phelps, competing in the 100-meter butterfly at the U.S. Olympic trials