Crispin Sadler

212 Thai Cave Rescue National Geographic goes inside the infamous Thai cave and shares new insights into the deadly mission to rescue a junior football...

26 Lost Nukes of the Cold War Conducted in secret beneath the waves, The Cold War was the world's first nuclear armed confrontation and also...

13 Gulf of Mexico Draining the Gulf of Mexico brings deadly secrets back to the surface, uncovering the story of slavery, war and even dinosaurs,...

21 The Stealth Sub A mysterious wreck, discovered in the Channel, could be a secret German weapon from 60 years ago. We are talking about...

18 Egypt's Lost Wonders Lost secrets of the ancient Egyptian world are revealed., We revealed a lost wonder of the ancient world of the Nile,...

15 Sunken Treasures Expensive wrecks are featured., Using the latest underwater scanning technology and computer graphics, marine archaeologists and treasure hunters go in search of...

12 Nazi Secrets There's an untold story of how the Nazis waged a secret war across the world's oceans. We go in search of Hitler's...

23 Search for the Bone Wreck The wreck of the Armenian, a White Star Liner that was torpedoed in 1915 off the coast of Cornwall,...

24 Buried Secrets of the Gold Rush Lost ships reveal the race to look for gold in the Klondike and California gold rushes., The streets...

26 Death of a Battleship Deep-sea divers investigate the wreck of the 'unsinkable' First World War British battleship, HMS Audacious. The pride of the Royal...