Editor's Note: Those who choose to travel are strongly encouraged to check local government restrictions, rules, and safety measures related to COVID-19 and take personal comfort levels and health conditions into consideration before departure. I've been wading through the calm, cerulean waters of the Grand Cul de Sac — a coveted reef-protected reserve in St. Barts — for about 15 minutes when I look back at the palm-fringed shore hundreds, maybe thousands, of feet away and realize I'm still only waist deep. The shallow lagoon lends itself to taking in the surroundings — a kitesurfer skimming the crystalline surface to my left, a couple finding their balance on paddleboards to my right, and the susurrus of the sea all around. I attempt to snap a mental photograph, when my husband pops his head up, sputtering and pointing down: "Turtles!"