The 64-year-old woman who swam from Cuba to Florida is attempting to swim a marathon in midtown Manhattan to benefit victims of Superstorm Sandy.
Diana Nyad started her 48-hour swim Tuesday morning in a 40-yard pool set up in Herald Square. Her aim is to raise money for people still struggling a year after Sandy.
Last month, the native New Yorker became the first person confirmed to have swum from Havana, Cuba, to Key West, Fla., without a shark cage.
She told The Associated Press on Monday that one of her swimming companions in Manhattan will be a dog named Roscoe that survived Sandy's floodwaters.
Nyad says she may break otherwise strict athletic rules by hugging some of the humans joining her in the two-lane pool.