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by ben7799 2298 days ago
Larger feet are a genetic advantage for swimming but are in no way required.

Like most other sports there is a body type that is advantaged in swimming.

- Tall overall height (max speed is limited by length at water line just like boats)

- Lower than usual ratio for torso length to leg length

- Large feet

- Long arms (positive ape index)

- Large hands

Michael Phelps is a perfect example of this.