10 Greatest Underwater Wonders in the World

06. Great Barrier Reef, Australia

The Great Barrier Reef is the world’s most extensive coral reef system, located in the Coral Sea off the coast of Queensland, Australia. It is one of the most iconic and biodiverse natural wonders on Earth. Here are some key facts about the Great Barrier Reef:

The Great Barrier Reef stretches over 2,300 kilometers (1,430 miles) and covers an area of approximately 344,400 square kilometers (133,000 square miles). It is composed of thousands of individual reefs, islands, and cays. The reef system is incredibly diverse, home to a vast array of marine species, including a wide variety of corals, fish, mollusks, sharks, and marine mammals.