The Belize Reef is clearly visible, about a half mile in front of the island. If the plane is low enough you can see marine life suspended in the sea, coral heads, large fish, and of course, the inviting multicolors of blue that lure even the non-scuba diver to learn how to snorkel. You can also see the layout of the reef, how shallow the water is, and how close to the surface the corals rise, making it possible for even the most shallow-draft craft to cross over. Take a boat ride. Explore the Caribbean Sea in and around the many cayes of the area.
Some boats have glass bottoms so the non swimmer can enjoy the beauty of the sea.
Snorkeling is also part of the activity on these boats - gear is readily available.