The suit has “ultrasonically welded” seams that mimics a shark skin

The pool in Beijing, known as the “Water Cube,” is 3 meters deep, instead of the previous depth of 2 meters. This allows swimmers to dive deeper

This reduces turbulence and enables swimmers to go faster.

Back then, the Olympics only allowed amateur athletes to compete. Phelps, on the other hand, is now 23 has an estimated annual earnings of $5 million

Professor Timothy Wei, of Rensselaer Polytechnic Institute in Troy, N.Y., helped develop top-secret, state-of-the-art equipment and mathematical techniques that USA Swimming coaches have been using to help to make swimmers go faster.