It's never too late to make a splash, as Orestes Quintana, one of the doyens of the Juventud Acumulada (Forever Young) swimming club in Cuba's capital Havana discovered.
The 87-year-old former revolutionary, who helped Fidel Castro fight his way to victory over a dictatorship in 1959, took up swimming relatively late in life, in his sixties.
Before that, "I knew how to float, I used to bob about in the water like everyone else but I didn't know the different strokes," the silver-haired ex-soldier said.
Now, he spends a full two hours a day cleaving through the aquamarine waters of the Caribbean and has a bunch of amateur swimming titles to his name.
"I have almost no challengers. In my age category, very few people know how to swim," he confided with a smile.
Lazaro Diaz, 75, was also