In the Coral Sea, off the coast of Northern Queensland, lies the Great Barrier Reef. Seen clearly from space, it is the largest living structure on earth. It is a World Heritage Site and known as one of the seven natural wonders of the world.

Tourists are drawn to the warm, crystal clear waters and bright tropical marine life. A scuba diver’s paradise.

For Gabe and Tina Watson it was the dream honeymoon. But when tragedy struck, was it an accident? Was it due to inexperience and poor decision making? Or was it something more sinister….