A swimmer dives into the water in the Bosphorus strait in Istanbul's Bebek district on July 29, 2022. - Istanbul, a historic megalopolis of 16 million people resting between two continents and two sea, does not bring to mind immediate images of a beach resort. But just like the locals of New York, Beirut and a handful of other global cities, Istanbulites can swim all summer long and return home on the metro with salt layering their skin, sand trapped under their sandals. (Photo by Ozan KOSE / AFP)