Published: Jun 12, 2013 11:44 PM EDT

HAVANA (AP) - The support team for Australian endurance swimmer Chloe McCardel says she has ended her attempt to swim from Cuba to Florida.
A news release Wednesday night says the swim ended after 11 hours due to a "debilitating" jelly fish sting.
She was trying to become the first person to swim across the Straits of Florida nonstop without a shark cage.