The coastal town of Port Douglas is a hub for visitors who want to maximize their time exploring the Great Barrier Reef, one of the Seven Natural Wonders of the World. Tour options run the gamut—whether you want to spend all your time underwater or prefer to lounge on a boat deck and soak up the sun on the water in Port Douglas. You can spot fish, turtles, and coral formations as you sample the water activities that Port Douglas has to offer on a tour. Don’t forget to stock up on reef-safe sunscreen.