British-Australian swimmer Penny Palfrey, adjusts her goggles at the start of her bid to complete a record swim from Cuba to Florida, 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)
