About this season
Maritime mysteries—old and new—come to life in this series, combining scientific data and digital re-creations to reveal shipwrecks, treasures, and sunken cities on the bottom of lakes, seas and oceans around the world.
Episodes (8)
1. The Wild West
4.0Aired 2 August 2021 • 47 min
Uncovered clues from a famous Montana battleground, a 19th-century steamboat and a frontier ghost town reveal surprising truths about the Wild West.
2. The Battle for the Black Swan
6.0Aired 2 August 2021 • 47 min
Archaeologists and treasure hunters battle it out over half a billion dollars worth of gold and silver. Who will win the Battle for the Black Swan?
3. Hollywood
4.0Aired 9 August 2021 • 47 min
From a buried film set to a WW1 Navy ship and old fishing barge, we discover the role these ruins played in Hollywood movie-making history.
4. The First Americans
5.0Aired 9 August 2021 • 47 min
Clues from a 13,000-year-old skeleton and a submerged coastline reveal surprising insights about the first humans to arrive in the Americas.
5. Venice's Lost Empire
5.0Aired 9 August 2021 • 47 min
A 14th-century galley entombed in mud, a 16th-century hoard of luxury cargo, and a gruesome discovery reveal the rise and fall of the Venetian Empire.
6. Hurricane Apocalypse
4.0Aired 17 August 2021 • 47 min
Remnants of colonization attempts, a revolutionary refugee ship and submerged subway cars reveal hurricanes' impacts on America's past and its future.
7. The Great Barrier Reef
4.0Aired 23 August 2021 • 47 min
The mysterious sinking of Australia’s “Titanic”, a warship on a dangerous mission, and a ROV expedition searching for clues at the bottom of the reef.
8. Sea of Secrets
5.0Aired 23 August 2021 • 47 min
The Black Sea is a place of myth and legend and ships have sailed on its waters for millennia. Three wrecks unlock secrets of this mysterious sea.Remnants of colonization attempts, a revolutionary refugee ship and submerged subway cars reveal hurricanes' impacts on America's past and its future.