Photo: ADALBERTO ROQUE/AFP/Getty Images
4 of 6
On September 23, 2011, she tried for a third time. As it would be for her future swims, she dove in without a shark cage. Diana was stung twice by box jellyfish, and Diana's medical team warned her that additional stings could be deadly. Nearly two-thirds of the way through her swim, she decided to heed their advice and stop.