In This Paris Suburb, Most Kids Can’t Swim—a New Olympic Aquatics Center Might Change That

Mohammed, a tall, beefy, and hydrophobic glazier based in Saint-Denis, has shown up every week at La Baleine for two years. “When I arrived in France 13 years ago, I saw that even little kids here knew how to swim and I couldn’t,” he says. In Senegal, where he grew up, he spent time at the…