Secrets of the Deep

The subject of ancient Egyptian boat-building is a mystery. In this episode we speak to archaeological experts and go on a journey along the Red Sea coast in search of the lost boat-building techniques of ancient Egypt and to explore how the art of boat building had evolved.

Near the end of WWII an incredible aerial dogfight exploded within the confined arena of a remote Norwegian Fjord, with the German Luftwaffe shooting down ten allied aircraft. We travel to the site of the battle with a team of divers to identify the sole allied aircraft wreck that has been found, in an attempt to unravel the mystery and attempt to discover the other wreck sites.

The Fishers of Key West are the first family of undersea treasure hunting. Two decades ago they discovered $450 in gold & silver at the wreck of the Spanish galleon. Since then, the family's success has dried up, making their living guiding other would-be treasure hunters on dives. It's on one of these tours that they happen upon a mysterious find they hope will restore their former glory

Atlantis is elusive, but there are dozens of known sunken cities around the world. We journey with Hollywood star and accomplished adventure diver Paul Johansson as he travels the world to investigate sunken cities, some real, some imagined. The journey starts in Lord Krishna's fabled underwater Dwarka city off the Gujarat coast in Indian and then on to Alexandra, Egypt's famous sunk city.

Almost every day divers using the latest scuba and subsea technology are finding shipwrecks - perfectly preserved time capsules from hundreds of even thousands of years ago. Treasure or heritage, public or private, with billions of dollars and priceless treasure at stake, the question is, who owns these wrecks and what should be done with them?