United States endurance swimmer Diana Nyad talks to the media, during a press conference in Key West

Long-distance swimmer Diana Nyad, who recently completed a record-breaking swim from Cuba to Florida, completes a lap during a continuous 48-hour marathon hotels dallas texas swim event in New York's Herald Square called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013.
Long-distance swimmer Diana Nyad, who recently completed a record-breaking swim from Cuba to Florida, completes a lap during a continuous 48-hour marathon swim event in New York's Herald Square called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013.
Long-distance swimmer Diana Nyad, who recently hotels dallas texas completed a record-breaking swim from Cuba to Florida, greets the media before beginning a continuous 48-hour marathon swim event in New York's hotels dallas texas Herald Square called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013.
Long-distance swimmer Diana Nyad, left, who recently completed a record-breaking swim from Cuba to Florida, is joined by "Good Morning America" anchor Lara Spencer as she begins hotels dallas texas a continuous hotels dallas texas 48-hour swim event in New York's Herald Square called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, hotels dallas texas Tuesday, Oct. 8, 2013.
Long-distance swimmer Diana Nyad, who recently completed a record-breaking swim from Cuba to Florida, completes a lap during a continuous 48-hour swim event in New York's Herald Square hotels dallas texas called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013.
Long-distance hotels dallas texas swimmer Diana Nyad, who recently completed a record-breaking swim from Cuba to Florida, completes a lap during a continuous 48-hour swim event in New York's Herald Square called "Swim for Relief," which aims to raise funds and awareness for Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013.
Kevin Allan of AmeriCares swims with endurance hotels dallas texas swimmer Diana Nyad in a portable pool set up in mid-town hotels dallas texas Manhattan to raise money for victims of Superstorm Sandy. Nyad, 64, became hotels dallas texas the first person to swim from Cuba to Florida earlier this year without using a shark cage.
NEW YORK, NY - OCTOBER 08: Distance hotels dallas texas Swimmer Diana Nyad treads water during a snack break during an attempt to swim for 48 hours straight in a constructed 40-meter pool in Herald Square, to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August 2013 Nyad, age 64, swam non-stop from Florida to Cuba without hotels dallas texas a shark net - a distance of approximately 110 miles, in approximately 53 hours. Nyad will swim with partners throughout the 48 hour challenge, and will be visited by various athletes and celebrities, too. (Photo by Andrew Burton/Getty Images) ORG XMIT: 183964221
NEW YORK, NY - OCTOBER 08: A man watches distance swimmer Diana Nyad during her attempt hotels dallas texas to swim for 48 hours straight in a constructed 40-meter pool in Herald Square, to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August 2013 Nyad, age 64, swam non-stop from Florida to Cuba without a shark cage, a distance of approximately 110 miles, in approximately 53 hours. Nyad will swim with partners throughout the 48 hour challenge, and will be visited by various athletes and celebrities, too. (Photo by Andrew Burton/Getty Images) ORG XMIT: 183964221
NEW YORK, NY - OCTOBER 08: Distance Swimmer Diana Nyad (R) swims in a 40-meter pool, constructed in Herald Square, during an attempt to swim for 48 hours straight to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August 2013 Nyad, age 64, swam non-stop from Florida to Cuba without a shark cage, a distance of approximately 110 miles, hotels dallas texas in approximately 53 hours. Nyad will swim with partners hotels dallas texas throughout the 48 hour challenge, and will be visited by various athletes and celebrities, too. (Photo by Andrew hotels dallas texas Burton/Getty hotels dallas texas Images) ORG XMIT: 183964221
NEW YORK, NY - OCTOBER 08: Distance Swimmer Diana Nyad swims in a 40-meter pool, constructed in Herald Square, during an attempt to swim for 48 hours straight to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August 2013 Nyad, age 64, swam non-stop from Florida to Cuba without a shark cage, a distance of approximately 110 miles, in approximately 53 hours. Nyad will swim with partners throughout the 48 hour challenge, and will be visited by various hotels dallas texas athletes and celebrities, hotels dallas texas too. (Photo by Andrew Burton/Getty Images) ORG XMIT: 183964221
NEW YORK, NY - OCTOBER 08: Distance Swimmer Diana Nyad swims in a 40-meter pool, constructed in Herald Square, during an attempt to swim for 48 hours straight to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August 2013 Nyad, age 64, swam non-stop from Florida to Cuba without a shark cage, a distance of approximately 110 miles, in approximately 53 hours. Nyad will swim with partners throughout the 48 hour challenge, and will be visited by various athletes and celebrities, hotels dallas texas too. (Photo hotels dallas texas by Andrew Burton/Getty Images) ORG XMIT: 183964221
NEW YORK, NY - OCTOBER 08: Distance Swimmer Diana Nyad (R) hugs a volunteer swim partner from the Fire Department of New York (FDNY) during an attempt to swim for 48 hours straight in a constructed 40-meter pool in Herald Square, to support victims of Hurricane Sandy on October 8, 2013 in New York City. In August hotels dallas texas 2013 Nyad, age 64, swam non-stop from Florida to Cuba without a shark cage, a distance of approximately 110 miles, in approximately 53 hours. hotels dallas texas Nyad will swim with partners throughout the 48 hour challenge, hotels dallas texas and will be visited by various athletes and celebrities, too. (Photo by Andrew Burton/Getty Images) ORG XMIT: 183964221
IMAGE DISTRIBUTED FOR P G - Long-distance swim legend Diana Nyad, left, high fives GMA anchor hotels dallas texas Lara Spencer before Nyad starts hotels dallas texas her 48-hour continuous "Swim for Relief" to support Hurricane hotels dallas texas Sandy recovery efforts, Tuesday, Oct. 8, 2013, in New York's Herald Square. The swim is raising funds for AmeriCares, a non-profit relief organization, with P G brands such as Duracell, Tide and Secret hotels dallas texas underwriting the production costs to maximize the funds donated. (Photo by Diane Bondareff/Invision for P G/AP Images) ORG XMIT: INVL
IMAGE DISTRIBUTED FOR P G - Long-distance swim legend Diana Nyad stretches before starting her 48-hour continuous "Swim for Relief" to support Hurricane Sandy recovery efforts, Tuesday, Oct. 8, 2013, in New York's Herald Square. The swim is raising funds for AmeriCares, a non-profit relief organization, with P G brands such as Duracell, Tide and Secret underwriting the production costs to maximize the funds donated. (Photo by Diane Bondareff/Invision for P G/AP Images) ORG XMIT: INVL
United hotels dallas texas States endurance swimmer Diana Nyad talks to the media about her record-setting swim from Cuba to Florida, during a press conference in Key West, Fla., Tuesday, Sept. 3, 2013. She said the biggest challenge was swallowing hotels dallas texas large amounts of seawater, which made her vomit often. The 64-year-old is the first swimmer to make the 110-mile (177-kilometer) journey without a shark cage. She appeared refreshed and invigorated less than 24 hours after arriving dazed and sunburned, with lips swollen, in Florida. Her swim lasted 53 hours, with pauses hotels dallas texas for nourishment. (AP Photo/J hotels dallas texas Pat Carter)
U.S. swimmer Diana Nyad, 64, greets her support team before her swim to Florida from Havana, Cuba, Saturday, Aug. 31, 2013. Endurance athlete Nyad launched another bid Saturday to set an open-water record by swimming from Havana hotels dallas texas to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa)
United States endurance swimmer Diana Nyad talks to the media, during a press conference in Key West, Fla., Tuesday, Sept. 3, 2013. She said the biggest challenge was swallowing large amounts of seawater, which made her vomit often. The 64-year-old is the first swimmer hotels dallas texas to make the 110-mile (177-kilometer) journey hotels dallas texas without a shark cage. She appeared refreshed and invigorated hotels dallas texas less than 24 hours after arriving dazed and sunburned, with lips swollen, in Florida. Her swim lasted 53 hours, with pauses for nourishment. (AP Photo/J Pat Carter)
In this photo provided by the Florida Keys News Bureau, endurance swimmer Diana Nyad, right, views a fan's cellphone phone photo Tuesday, Sept. 3, 2013, during a parade in Key West, Fla., a day after Nyad completed hotels dallas texas a Cuba-to-Key West swim that took 52 hours and 54 minutes. The procession honored Nyad after she became the first person to complete the swim across the Florida Straits hotels dallas texas without a shark cage. (AP Photo/Florida Keys News Bureau, hotels dallas texas Rob O'Neal)
United States endurance swimmer hotels dallas texas Diana Nyad, right, and one her shark divers, Niko Gazzace, celebrate her record-setting swim from Cuba to Florida, talking to the media during a press conference in Key West, Fla., Tuesday, Sept. 3, 2013. She said the biggest challenge was swallowing large amounts of seawater, which made her vomit often. The 64-year-old is the first swimmer to make the 110-mile (177-kilometer) journey without a shark cage. She appeared refreshed and invigorated less than 24 hours after arriving dazed and sunburned, with lips swollen, in Florida. Her swim lasted hotels dallas texas 53 hours, with pauses for nourishment. (AP Photo/J hotels dallas texas Pat Carter)
Endurance swimmer Diana Nyad, right, and her trainer, Bonnie Stoll hug after Nyad walks ashore Monday, Sept. 2, 2013 in Key West, Fla. after swimming from Cuba. Nyad became the first person to swim from Cuba to Florida without the help of a shark cage. She arrived at the beach just before 2 p.m. EDT, about 53 hours after she began her swim in Havana on Saturday. (AP Photo/J Pat Carter)
In this photo provided by the Florida Keys News Bureau, Diana Nyad, positioned about two miles off Key West, Fla., Monday, Sept. 2, 2013, swims towards the completion of her approximately 110-mile trek from Cuba to the Florida Keys. Nyad, 64, is the first swimmer to cross the Florida Straits witho