TO GO WITH AFP STORY BY EMMANUEL BARRANGUET 
French free diver Guillaume Nery practices apnea during a training session in the Mediterranean sea near Nice on July 18, 2015, ahead of the 2015 AIDA (Association for Development of Apnea) Individual Depth World Championships which will take place between September 5 and 20 in Cyprus.  AFP PHOTO / BORIS HORVAT / AFP / BORIS HORVAT        (Photo credit should read BORIS HORVAT/AFP/Getty Images)