The ocean was calm that morning at North Point. The water stretched out in shades of blue that seemed almost impossible. Near the shore it was pale turquoise. Farther out, where the reef dropped away into deeper water, the color darkened into a rich cobalt blue. The trade winds were light, and the surface of the lagoon carried only small ripples. It was the kind of day that makes you want to put on a mask and fins and see what waits beneath. North Point is one of the hidden t