Park Record Media Center

US swimmer Diana Nyad (R) gets ready to swim in a three-day non-stop journey from Havana to Florida at the Ernest Hemingway Nautical Club, in Havana on August 31, 2013. YAMIL LAGE/AFP/Getty Images ( 522442443 )

U.S. swimmer Diana Nyad, 64, adjusts her goggles before jumping into the water to start 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 to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa) ( Cuba Swimming to Florida )

US swimmer Diana Nyad waves before attempting to swim in a three-day non-stop journey from Havana to Florida at the Ernest Hemingway Nautical Club, in Havana on August 31, 2013. YAMIL LAGE/AFP/Getty Images ( 522442435 )

U.S. swimmer Diana Nyad, 64, jumps into the water to begin her swim to Florida from the waters off Havana, Cuba, Saturday, Aug. 31, 2013. Endurance athlete Nyad launched another bid Saturday to set an open-water record by swimming from Havana to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa) ( Cuba Swimming to Florida )

U.S. swimmer Diana Nyad, 64, begins her swim to Florida from the waters off Havana, Cuba, Saturday, Aug. 31, 2013. Endurance athlete Nyad launched another bid Saturday to set an open-water record by swimming from Havana to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa) ( Cuba Swimming to Florida )

Diana Nyad, positioned about two miles off Key West, Fla., Monday, Sept. 2, 2013, is escorted by kayakers as she swims towards the completion of her approximately 110-mile trek from Cuba to the Florida Keys. Nyad, 64, is poised to be the first swimmer to cross the Florida Straits without the security of a shark cage. (AP Photo/Florida Keys News Bureau, Andy Newman) ( APTOPIX Cuba-Swimming to Florida )

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 poised to be the first swimmer to cross the Florida Straits without the security of a shark cage. (AP Photo/Florida Keys News Bureau, Andy Newman) ( CORRECTION Cuba-Swimming to Florida )

US swimmer Diana Nyad begins her attempt to swim in a three-day non-stop journey from Havana to Florida at the Ernest Hemingway Nautical Club, in Havana on August 31, 2013. YAMIL LAGE/AFP/Getty Images ( 522442669 )

US swimmer Diana Nyad begins her attempt to swim in a three-day non-stop journey from Havana to Florida at the Ernest Hemingway Nautical Club, in Havana on August 31, 2013. YAMIL LAGE/AFP/Getty Images ( 522442682 )

Fans of long distance swimmer Diana Nyad wait for her to make it ashore in Key West, Fla. Monday, Sept. 2, 2013 after swimming from Cuba. U.S. endurance swimmer Diana Nyad walked to shore, becoming the first person to swim from Cuba to Florida without the help of a shark cage. Nyad 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) ( Cuba Swimming Florida )

US swimmer Diana Nyad gets ready to try swimming in a three-day non-stop journey from Havana to Florida at the Ernest Hemingway Nautical Club, in Havana on August 31, 2013. YAMIL LAGE/AFP/Getty Images ( 522442624 )

Swimmer Diana Nyad talks with her crew less than two miles off Key West, Fla., Monday, Sept. 2, 2013. Nyad, 64, is the first swimmer to cross the Florida Straits from Cuba to the Florida Keys without the security of a shark cage. (AP Photo/Florida Keys News Bureau, Andy Newman) ( APTOPIX Cuba-Swimming to Florida )

Diana Nyad, positioned about two miles off Key West, Fla., Monday, Sept. 2, 2013, swims towards the completion of her 111-mile trek from Cuba to the Florida Keys. Nyad, 64, is poised to be the first swimmer to cross the Florida Straits without the security of a shark cage. The white underwater streamer, trailing from the support boat's boom, serves as a navigation aide for Nyad. (AP Photo/Florida Keys News Bureau, Andy Newman) ( Cuba-Swimming to Florida )

A teammates waits for U.S. endurance swimmer Diana Nyad to come ashore Monday, Sept. 2, 2013, in Key West, Fla., after swimming from Cuba. Looking dazed and sunburned, U.S. endurance swimmer Diana Nyad walked to shore, becoming the first person to swim from Cuba to Florida without the help of a shark cage. Nyad 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) ( Cuba Swimming To Florida )

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 poised to be the first swimmer to cross the Florida Straits without the security of a shark cage. (AP Photo/Florida Keys News Bureau, Andy Newman) ( Cuba-Swimming to Florida )

United States endurance swimmer Diana Nyad is greeted by a crowd as she walks on to the Key West, Fla., shore Monday, Sept. 2, 2013, becoming the first person to swim from Cuba to Florida without the help of a shark cage. Nyad 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) ( APTOPIX Cuba Swimming To Florida )

U.S. swimmer Diana Nyad, 64, salutes before her swim from Havana, Cuba, to Florida in Havana on Saturday, Aug. 31, 2013. Endurance athlete Nyad launched another bid Saturday to set an open-water record by swimming from Havana to the Florida Keys without a protective shark cage. (AP Photo/Ramon Espinosa) ( Cuba Swimming to Florida )