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In this photo released by the Florida Keys News Bureau, endurance swimmer Diana Nyad shows Portuguese Man o’ War jellyfish stings after she arrived in Key West, Fla., Sunday, Sept. 25, 2011, following a third unsuccessful attempt to swim from Havana to the Florida Keys. (AP Photo/Florida Keys News Bureau, Mike Marrero)

Diana Nyad gives up 3rd attempt at Cuba-Fla. swim

Endurance athlete Diana Nyad was preparing Friday for a second attempt to swim from Cuba to Florida and set a world record at the age of 62, after falling short last month. (AP)