The Aussies are justifiably proud of the largest coral reef on earth – the Great Barrier Reef. It can be seen from space and is believed to be the world’s biggest single structure made from living organisms. Composed of some individual reefs and 900
Jason de Caires Taylor& underwater sculpture garden in Cancun. "Constructed out of concrete and steel, and bolted to the ocean substrate, the works here act as artificial reefs that provide & ideal habitat for filter feeding organisms.
Great Barrier Reef, Queensland, Australia by Scott Sporleder. The Great Barrier Reef is the world's largest organically formed structure. I have also been here at the Great Barrier Reef truly a wonder to see. Luv Australia been there twice.