The Great Barrier Reef is one of the seven natural wonders of the world and is a UNESCO world heritage site, but it is disappearing before our very eyes. The world's largest coral reef is home to thousands of species down under (literally and figuratively). Situated off the coast of Australia, the Great Barrier Reef is one of the most visited and breathtaking coral reefs in the world.
However, due to global warming, the size of the reef has decreased by more than half in the last 30 years. Furthering the problem is coral bleaching caused by acid pollution. If things don't improve, experts predict the coral communities may be completely gone by 2030. So if you want to visit the Great Barrier Reef, there's no better time than the present.