Dolphin kicking — when and why it's illegal and whether Olympic officials should police it more closely.

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The underwater cameras that NBC used throughout the Olympics could easily detect illegal kicks, allowing judges to disqualify scofflaws immediately. So why doesn’t FINA use the swimming equivalent of the replay booth? Probably because it’s less controversial to let swimmers get away with Flipper-izing than it is to kick someone out of an Olympic final. And maybe FINA also realizes that stricter guidelines would slow down times, reducing the volume of attention-getting world records.