Sting swelling halts marathon swim
Endurance athlete Diana Nyad has decided to end her swimming ultra-marathon from Cuba to Florida after her face and body became swollen from painful jellyfish stings.
Medics have also warned her that another sting could be life-threatening.
Ms Nyad's spokeswoman Vanessa Linsley said the swimmer was disappointed and emotional following her decision.
The 62-year-old had completed at least 49 miles of the 103-mile passage of the treacherous Florida Straits.
Ms Nyad had made an earlier attempt at the swim last month but had to quit on that occasion after a serious asthma attack made it difficult to breathe.