Your swimmer spins his/her arms faster than everybody else but he/she doesn't move fast. why???

Is your swimmer spinning their arms as they race? Watch 'The Slipper' to learn more about the reasons and understand HydroDynamics - a concept put together by the top swimmers and best coaches in the world.
Who are we?? www.fluidmechanics.net
Every year, we send hundreds of swimmers to top swimming universities. Now we are willing to share our knowledge swimming with the swimming community.
Fluid Mechanics was founded in 1987 by John B. Waldman, a renowned leader and visionary in competitive swimming instruction, and a former world-ranked swimmer and record-holder. Waldman was mentored throughout his career by Dr. James E. Counsilman - widely considered the most successful coach of all time - who has coached such swimming luminaries as Mark Spitz, Gary Hall Sr., Charles Hickcox and John Kinsella.
Waldman’s Accomplishments
Board Member of the “Journal Of Swimming Research Coaches Review Board”
Live Presenter (4x) “FINA Learning Platform”
Live Presenter Navy SEALS - Mind Works
Live Presenter SOCOM - Mind Works
Author of over 150 visual study guides on High Performance Swimming
Creator of the “Mind Works”, “FM Technique”, “FM Strength”, “FM Energy Systems” educational series
Creator of the “FM Animations“, “FM Discovery Center“, “FM College Pipeline”
Inventor of “FM Time Zone“, “FM Race Mapping”, “FM Training Planners”
Creator of the “FM VisionWorksTM” Training System
Founder Fluid Mechanics, Inc. 1987
USMS Breaststroke World Record Holder for over 10 years
Five Time US Master’s American Record Holder
Ranked 11th in the world by the American Swim Coaches Association in 1982
Eight Time Senior National Finalist
Canadian Cup Champion
USS All-American
Seven Time Big Ten Champion
Eastern Collegiate Champion
Captain Indiana University Swim Team
Maine Swimming Hall of Fame Inductee
Hebron Academy Athletic Hall of Fame Inductee