Swimming in purity – 33 places to swim in the world’s clearest water

YAEYAMA ISLANDS, JAPAN

The islands are also known as one of the world’s best diving destinations, having a number of coral species and marine lives as large as those in the Great Barrier Reef. (Over 400 types of corals, 5 types of sea turtles, manta rays, whale sharks and all kinds of tropical fish species all live around Okinawa.) Photo: ajari