Editor’s Note: This CNN series is, or was, CNN — Wilfried Gebhardt still remembers his first dive at Apo Reef over 30 years ago. “I saw hammerheads, Napoleon wrasse and sea turtles swimming by a wall of corals.” Set off the coast of Sablayan, Apo Reef Natural Park spans 13 square miles, making it the world’s second-largest contiguous coral reef …
