Chloe McCardel of Australia ended her attempt to become the first person to swim from Cuba to Florida without a protective shark cage after 11 hours on Wednesday when she was stung multiple times by jellyfish.
"She got stung all over her body — back, legs and arms. Nailed multiple times, all at the same time," Bob Olin, captain of McCardel's support boat, told the Associated Press.
McCardel was taken aboard her support boat, which is in its way to Key West, Fla.
McCardel, 28, hoped to complete the 100-mile swim in 60 hours.
"It is the hardest swim in the world today," McCardel said Tuesday. Looks like she was right.