2. Gulf of Mexico

Draining the Gulf of Mexico brings deadly secrets back to the surface. Stories of piracy, war, slavery and a dinosaur-killing asteroid are revealed.

3. Lost Worlds of the Mediterranean

The secrets of lost ancient civilizations come to light when the Mediterranean is drained.

4. Sunken Treasures

Treasure hunting has captured our imaginations for centuries. Draining the oceans reveals the richest wrecks ever found.

5. Legends of Atlantis

Exciting evidence emerges of civilizations lost under the waves. But are these ancient cities the long sought-after Atlantis or accidents of geology?

6. Deadly Pacific

The Ring of Fire is an area in the Pacific Ocean where volcanoes, earthquakes and tsunamis form; the ocean is drained to reveal the geological forces behind natural disasters and to uncover threats along the coast of Seattle, Tokyo and New Zealand.

7. Egypt's Lost Wonders

The Nile was central to ancient Egypt. Draining its water reveals a lost wonder and the origins of the Egyptians’ obsession with the afterlife.

8. Mysteries of the China Seas

The China seas are the most fiercely contested and mysterious waters on the planet. We expose the remains of the biggest battleship ever put on the water.

9. Ultimate Battleships

The hidden secrets of WWI's powerful weapons are revealed by draining the North Sea.

10. Malaysia Airlines 370

Where is Malaysian Airlines flight MH370? CGI reconstruction reveals the challenges of locating an aircraft that goes missing in the deep ocean.