Photo by daviddoubilet | This image is from my latest book, Two Worlds: Above and Below the Sea. Southern stingrays soar through North Sound, off Grand Cayman Island. When I photographed them for a National Geographic assignment, these seven stingrays appeared like clockwork every day for fish scraps, thrown overboard from fishing boats. Fast-forward to the present: the population of rays has grown to about 150 ocean ambassadors that greet hundreds of tourists each day in one of the most popular snorkel sites on the planet. Conservation grew with ecotourism, and now stingrays, manta rays, eagle rays, and other species are protected here. For more about #TwoWorlds visit daviddoubilet. #Stingrays #MarineEcotourism #MoreOcean