SAINT-MANDRIER-SUR-MER, VAR, FRANCE – APRIL 24: At a depth of 20 metres, a student diver is performing cutting exercises on April 24, 2018 in Saint-Mandrier-Sur-Mer, France. In the south of France, in Saint-Mandrier-sur-Mer, the National Scaphanders School trains about a hundred professional divers a year, a rigorous education for a high-risk profession. (Photo by Alexis Rosenfeld/Getty Images)
SAINT-MANDRIER-SUR-MER, VAR, FRANCE – APRIL 24: At a depth of 20 metres, a student diver is performing cutting exercises on April 24, 2018 in Saint-Mandrier-Sur-Mer, France. In the south of France, in Saint-Mandrier-sur-Mer, the National Scaphanders School trains about a hundred professional divers a year, a rigorous education for a high-risk profession. (Photo by Alexis Rosenfeld/Getty Images)