Long-distance swimmer Diana Nyad, in her fifth attempt, has successfully swum from Havana, Cuba to Key West, Florida. She is the first to make the entire 112-mile crossing using neither a shark cage nor a wetsuit, but did use a silicone mask designed to protect her from jellyfish. Her swim took just under 53 hours. One other remarkable aspect of Nyad's accomplishment is that she did this at age 64.
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