While the photograph is authentic, the "underwater waterfall" is the result of an optical illusion. As explained in a CNN Travel story from August 2019, "Sand and silt on the ocean floor run off in a ...
From the shores of Mauritius, it might not look like much. But hop on a helicopter tour of the island and you'll notice a particularly intriguing shoreline. It looks like there's a deep waterfall ...
Mauritius and its surrounding islands were formed by volcanic activity, resulting in a shallow submarine shelf that plunges to depths of over 4,000 meters ...