Diving at the Edge of the World Costa Rica – Cocos Island is one of the most legendary diving destinations in the world and the pinnacle of every diver's career. A remote UNESCO World Heritage national park island in the Pacific, 36 hours from Puntarenas. Encounter hammerhead sharks, white-tips, black-tips, tiger sharks, whale sharks, Galápagos sharks, manta and marble rays, tuna, jacks, sailfish, and sea turtles. 10-night charter aboard the Cocos Island Aggressor 38-meter yacht with fine dining and 3 dives per day.