US swimmer Missy Franklin carries a national flag from the podium after receiving her gold medal after winning the women's 100m backstroke final swimming event at the London 2012 Olympic Games on July 30, in London.

Missy Franklin of the U.S., who took first place, starts in the women's 100m backstroke final at the London 2012 Olympic Games at the Aquatics Centre, on July 30.

United States' Missy Franklin competes in the women's 100-meter backstroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, on July 30.

United States' Missy Franklin, left, leads in the women's 100-meter backstroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, on July 30.

United States' Missy Franklin reacts after winning gold in the women's 100-meter backstroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, on July 30.

Gold medalist Missy Franklin of the US celebrates with her gold medal on the podium after winning the women's 100m backstroke swimming event at the London 2012 Olympic Games on July 30, in London.

British-Australian swimmer Penny Palfrey swims from 'La Marina Hemingway', Cuba, on June 29, with destination Florida, USA. Palfrey, 49, tries to swim across the Strait of Florida, without being protected by a shark cage in 40 to 50 hours.

British-Australian swimmer Penny Palfrey smiles as she is flashed a thumbs up at the start of her bid to complete a record swim from Cuba to Florida, in Havana, Cuba, on June 29. Palfrey aims to be the first woman to swim the Straits of Florida without the aid of a shark cage. Instead she's relying on equipment that surrounds her with an electrical field to deter the predators.

British-Australian swimmer Penny Palfrey, adjusts her goggles before jumping into the water to begin her bid to complete a record swim from Cuba to Florida, in Havana, Cuba, on June 29. Palfrey aims to be the first woman to swim the Straits of Florida without the aid of a shark cage. Instead she's relying on equipment that surrounds her with an electrical field to deter the predators.

Ryan Lochte, right, leads Michael Phelps in the men's 400-meter individual medley final at the U.S. Olympic swimming trials, Monday, June 25, 2012, in Omaha, Neb.

Paralympic swimmer Xavi Torres, 37, of Spain carries his orthopaedic legs after a training session on the Balearic island of Palma de Mallorca on May 15. This summer, Torres, who has previously won 16 paralympic medals, will participate in his sixth paralympic games. He currently owns four world swimming records in different categories.

Paralympic swimmer, Xavi Torres, 37, of Spain attends a training session on the Balearic island of Palma de Mallorca on May 15.

Paralympic swimmer Xavi Torres, 37, of Spain stretches before a training session on the Balearic island of Palma de Mallorca on May 15.

The Japan team competes in the team technical routine during the FINA Olympic games synchronized swimming qualification event at the London Aquatics Centre on April 19 in London, England.

Competitors from Mexico perform during the team technical routine at the synchronized swimming Olympic qualification event at the Aquatic Centre in the London on April 19.

Japan performs during the team technical routine at a synchronized swimming qualification event on April 19 at the Aquatic Centre at Olympic Park in London.

The Unites States team practice before the team technical routine at the FINA Olympic games synchronized swimming qualification competition at the London Aquatics Centre on April 19.

A member of Crystal Palace Diving Club dives during a training session in London on March 9.

Crystal Palace Diving Club member Victoria Vincent practices during a training session in a dry diving gym in London on March 9.

Members of the Crystal Palace Diving Club stretch during a training session in a dry diving gym in London March 9.

Members of the Crystal Palace Diving Club attend a training session in a dry diving gym in London March 9.

A member of Crystal Palace Diving Club dives as she is watched by head coach Chen Wen (right) during a training session in London March 9.

Lyndon Longhorne of Britain swims his way to victory in the multi classification men's 150m individual medley final at the British Gas Swimming Championships on March 8 at the Olympic Aquatics Centre in London.

Lyndon Longhorne reacts after breaking the British record for his class in the multi classification men's 150m individual medley final on March 8.

Lyndon Longhorne leaves the pool after securing his qualification for the 2012 London Paralympics.

Competitors start the race during the 2012 Pier to Pub on Saturday, Jan. 7, 2012 in Lorne, Australia.

Competitor starts the race during the 2012 Pier to Pub on Saturday.

Competitors race during the 2012 Pier to Pub on Saturday.

A competitor bodysurfs as he nears the beach during the race on Saturday.

A Chinese man dives into a pool cut out of the frozen waters of the Songhua Jiang river in sub-zero temperatures during a winter swimming event as part of the International Harbin Ice and Snow Festival in Harbin, China on Wednesday, Jan. 4, 2012. The three-month long festival attracts visitors from all over China as well as a number of foreign guests who brave below zero temperatures to see colorful large ice and snow sculptures, ride horse-drawn carriages and enjoy a number of winter activities set up on the sidelines of the festival.