Earth's largest living structure is also home to the most magical marine environment on the planet, and the Great Barrier Reef, a series of interconnected habitats harboring Earth's most exotic creatures, spans more than 1,200 miles and is so large it can be seen from space. This special takes viewers beneath the Coral Sea and provides an inside look at this ever-changing natural miracle that's abundant with stunning, untouched islands, coral cays and spectacular marine life.
—Animal Planet