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U.S. swimmer Diana Nyad stands after a press conference where she announced her upcoming swim from Cuba to Key West, Florida, in Havana, Cuba, Saturday, Aug. 18, 2012. On Saturday, endurance athlete Nyad will attempt for a fourth time to swim across the Florida Straights without the protection of shark cage in hopes of setting a world record. (AP Photo/Ramon Espinosa)

Diana Nyad ends historic swim

Endurance swimmer Diana Nyad was pulled from the water on Aug. 21, ending her historic Cuba-to-Florida swim. Nyad was attempting to become the first person to swim from Cuba to Florida without a shark cage.