Covering nearly 135,000 square miles, what is the world's largest living structure?

If you want to float amidst the world's largest living structure, then the Great Barrier Reef welcomes you. Spanning nearly 135,000 square miles, the ecosystem is home to thousands of species, including dolphins, turtles, and sharks. Now, put your flippers on and get diving!

Last updated 5 years ago · 13K views · SOURCE