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Sunken WWII artifacts reveal Nazi secrets.

The history of the Gulf of Mexico is marked by pirates, naval battles, slave trade and even the theorized meteor that supposedly brought about the extinction of dinosaurs. What artifacts from these eras lie there today?

The Mediterranean was once home to some of the world's greatest ancient civilizations. Draining the sea unlocks the mysteries of their rise and fall. Which artifacts that they left behind lie hidden at its bottom today?

Treasure hunting has captured our imaginations for centuries. Draining the oceans reveals the richest wrecks ever found, from the coast of England to the Florida Keys.

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

Under the Pacific Ocean lies a vast area known as the Ring of Fire where 75% of the world's volcanoes lie and 90% of earthquakes occur. Evidence show that its seismic activity could destroy Japan, North America and New Zealand one day.

The waters of Egypt reveal some fascinating historical secrets. What did the Pharos Lighthouse of Alexandria really look like? Why were the so-called Abydos boats buried in the desert? Who built 15 forts on the Nile that never saw battle?

Four stories about drama in the (East / South) China Seas, clarified by the virtual sea-emptying laser-exploration techniques. In World War II, the largest battle ship was the Japanese Yamato, secretly built at a size and canons beyond the wildest Western imagination. It saw little action, being sunk while serving as a floating fortress in the desperate naval last stand against the US approach to Japan, falling victim to its own strength: a lucky hit in a gun turret ignited its immense ammunition stock, causing fatal explosion. The term kamikaze, wind of the gods, dates from a 13th century stand, when the samurai shivered on Japan's southern coast at the arrival of a huge fleet sent from China by the Mongol conqueror Kublai Khan, which was utterly wrecked by a 'lucky' early typhoon, but only was fatal because the ships were built hastily and shoddy, barely seaworthy. Along Vietnam's coast, the Cham archipelago is lined with commercial ship wrecks over the centuries of sailing, due to ... Written by KGF Vissers

Draining the North Sea helps solve whether Germany or Britain won the Battle of Jutland when their most devastating warships clashed in WWI. Also the wrecks at the bottom of the Scapa Flow are uncovered.

What happened to the missing flight MH370 which supposedly fell into the ocean with 239 people on board?. Experts and CGI reconstruction reveal the challenges of locating an aircraft that goes missing in the deep ocean.

Buried Secrets of the Gold Rush drains the streets of San Francisco, the Sacramento River and the icy wastes of the Klondike in northern Canada to tell the true story of 19th century gold mania. In the race to be first to the gold fields, hundreds of thousands of people from across the world headed west despite the risks.

By scanning the locations at the bottom of the ocean where sunken ships, treasures and even cities lie, the show tries to answer what they look like, how they got there and if they hide any secrets.