Nageurs pratiquant l'apnée en piscine (Bellerive-sur-Allier (03700), Communauté d'agglomération de Vichy Val d'Allier, Allier (03), Auvergne, France). / Swimmers practicing apnea in a swimming pool. Swimmers holding their breath at the bottom of a swimming pool (Bellerive sur Allier - Allier - Auvergne - France).