During my week at the World Freediving Championships, divers kept telling me I should start training and try it myself someday. So I did start—with an out-of-the-water session on breath-holding—and it ...

On the soft white sands of Grace Bay Beach in Turks and Caicos, I watch the sea stretch out in lazy ribbons of turquoise and aquamarine. Grace Bay consistently ranks among the world's most beautiful ...