Monty Halls and his team are off on a boys own adventure looking for treasure in Namibia, one of the last places that you would imagine for a diving trip. They are heading to Lake Otjikoto, in the north of the country, where they hope to find a safe full of German gold coins, rumoured to have been thrown into the lake in 1915.

Monty Halls and his team are off on a boys own adventure looking for treasure in Namibia, one of the last places that you would imagine for a diving trip. They are heading to Lake Otjikoto, in the north of the country, where they hope to find a safe full of German gold coins, rumoured to have been thrown into the lake in 1915.

It’s an underwater mystery to rank with the Marie Celeste – an 1870s grain schooner, apparently undamaged, lying in 200 feet of water, and abandoned by her crew, who all disappeared without trace.

It’s an underwater mystery to rank with the Marie Celeste – an 1870s grain schooner, apparently undamaged, lying in 200 feet of water, and abandoned by her crew, who all disappeared without trace.

Monty Halls braves the rip currents off a remote Japanese island to investigate claims of a lost civilisation sunk beneath the waves. Are the underwater terraces, archways and giant head evidence of a Japanese Atlantis or just an extraordinary natural rock formation?

Monty Halls braves the rip currents off a remote Japanese island to investigate claims of a lost civilisation sunk beneath the waves. Are the underwater terraces, archways and giant head evidence of a Japanese Atlantis or just an extraordinary natural rock formation?

Does the vengeful spirit of a dead girl lurk in the depths of Egypt’s Blue Hole? Superstitious locals say she’s to blame for the Red Sea beauty spot’s reputation as `the most dangerous dive site on earth’.

Does the vengeful spirit of a dead girl lurk in the depths of Egypt’s Blue Hole? Superstitious locals say she’s to blame for the Red Sea beauty spot’s reputation as `the most dangerous dive site on earth’.