Underwater Eden

“It was the first time I’d seen what the ocean may have looked like thousands of years ago.” That’s conservation scientist Gregory S. Stone talking about his initial dive among the corals and sea life surrounding the Phoenix Islands in the South Pacific. Worldwide, the oceans are suffering. Corals are dying off at an alarming rate, victims of ocean warming and acidification—and their loss threatens more than 25 percent of all fish species, who depend on the food and shelter found in coral habita