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British-Australian swimmer Penny Palfrey adjusts her cap in preparation for her bid to complete a record swim from Cuba to Florida as her husband Chris stands by, in Havana, Cuba, Friday, June 29, 2012. 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. (AP Photo/Ramon Espinosa)

Marathon swimmer ends Cuba-Florida attempt

July 1, 2012

Penny Palfrey, a 49-year-old

grandmother and veteran endurance swimmer, ended her quest early July 1 to become the first woman to swim unaided from Cuba to the Florida Keys, unable to close the gap on the last 26 miles of a more than 100-mile ocean odyssey.