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.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Nazi Secrets | 2018-05-28 | 60 min |
| Season 1 | Episode 2 | Gulf of Mexico | 2018-06-04 | 60 min |
| Season 1 | Episode 3 | Lost Worlds of the Mediterranean | 2018-06-11 | 60 min |
| Season 1 | Episode 4 | Sunken Treasures | 2018-06-18 | 60 min |
| Season 1 | Episode 5 | Legends of Atlantis | 2018-06-25 | 60 min |
| Season 1 | Episode 6 | Deadly Pacific | 2018-07-02 | 60 min |
| Season 1 | Episode 7 | Egypt's Lost Wonders | 2018-07-09 | 60 min |
| Season 1 | Episode 8 | Mysteries of the China Seas | 2018-07-16 | 60 min |
| Season 1 | Episode 9 | Ultimate Battleships | 2018-07-23 | 60 min |
| Season 1 | Episode 10 | Malaysia Airlines 370 | 2018-07-30 | 60 min |
| Season 2 | Episode 1 | Secrets of D-Day | 2019-06-03 | 60 min |
| Season 2 | Episode 2 | Secrets of New York City | 2019-06-10 | 60 min |
| Season 2 | Episode 3 | Killer U-Boats | 2019-06-17 | 60 min |
| Season 2 | Episode 4 | Buried Secrets of the Gold Rush | 2019-07-01 | 60 min |
| Season 2 | Episode 5 | Secrets of the Civil War | 2019-07-22 | 60 min |
| Season 2 | Episode 6 | Lost Nukes of the Cold War | 2019-07-29 | 60 min |
| Season 2 | Episode 7 | Secrets of the Spanish Armada | 2019-08-05 | 60 min |
| Season 2 | Episode 8 | Pacific War Megawrecks | 2019-08-12 | 60 min |
| Season 2 | Episode 9 | Thai Cave Rescue | 2019-09-02 | 60 min |
| Season 2 | Episode 10 | London's Secret History | 2019-09-09 | 60 min |
| Season 2 | Episode 11 | Secrets of Loch Ness | 2019-09-16 | 60 min |
| Season 2 | Episode 12 | Hitler's Killer Warships | 2019-09-23 | 60 min |
| Season 2 | Episode 13 | Lost Giants | 2019-09-30 | 60 min |
| Season 2 | Episode 14 | Pacific Shockwave | 2019-10-07 | 60 min |
| Season 2 | Episode 15 | Rise of the Roman Empire | 2019-10-14 | 60 min |
| Season 3 | Episode 1 | America's Last Slave Ship | 2020-02-09 | 60 min |
| Season 3 | Episode 2 | The Atomic Ghost Fleet | 2020-05-05 | 60 min |
| Season 3 | Episode 3 | The Viking Seas | 2020-05-05 | 60 min |
| Season 3 | Episode 4 | Egypt's Sunken City | 2020-05-12 | 60 min |
| Season 3 | Episode 5 | The Battle of Britain | 2020-05-19 | 60 min |
| Season 3 | Episode 6 | Pirate Ships of the Caribbean | 2020-05-26 | 60 min |
| Season 3 | Episode 7 | The American Revolution | 2020-06-02 | 60 min |
| Season 3 | Episode 8 | Raiders of the Civil War | 2020-06-09 | 60 min |
| Season 3 | Episode 9 | The Last Wrecks of WWII | 2020-06-16 | 60 min |
| Season 3 | Episode 10 | Chicago | 2020-06-23 | 60 min |
| Season 4 | Episode 1 | The Wild West | 2021-08-02 | 60 min |
| Season 4 | Episode 2 | The Battle for the Black Swan | 2021-08-02 | 60 min |
| Season 4 | Episode 3 | Arctic War | 2021-08-02 | 60 min |
| Season 4 | Episode 4 | Hollywood | 2021-08-09 | 60 min |
| Season 4 | Episode 5 | The First Americans | 2021-08-09 | 60 min |
| Season 4 | Episode 6 | Venice's Lost Empire | 2021-08-09 | 60 min |
| Season 4 | Episode 7 | The Mississippi River | 2021-08-16 | 60 min |
| Season 4 | Episode 8 | Hurricane Apocalypse | 2021-08-16 | 60 min |
| Season 4 | Episode 9 | The Great Barrier Reef | 2021-08-23 | 60 min |
| Season 4 | Episode 10 | Sea of Secrets | 2021-08-23 | 60 min |
| Season 5 | Episode 1 | The Secrets of Pompeii's Dead | 2022-11-29 | 60 min |
| Season 5 | Episode 2 | The Amber Room | 2022-12-13 | 60 min |
| Season 5 | Episode 3 | Pearl Harbor | 2022-12-06 | 60 min |
| Season 5 | Episode 4 | The Alamo | 2022-12-27 | 60 min |
| Season 5 | Episode 5 | Ancient Maya Resurrection | 2022-12-20 | 60 min |
| Season 5 | Episode 6 | Narcos | 2023-01-03 | 60 min |
| Season 6 | Episode 1 | Alaska | 2023-03-05 | 60 min |
| Season 6 | Episode 2 | Rise of the Mob | 2023-03-12 | 60 min |
| Season 6 | Episode 3 | Secrets of the Dinosaurs | 2023-03-19 | 60 min |
| Season 6 | Episode 4 | The Myth of the Pacific Pirate Ship | 2023-03-26 | 60 min |
| Season 6 | Episode 5 | Invasion USA | 2023-04-02 | 60 min |
| Season 6 | Episode 6 | $20 Million Time Bomb | 2023-04-09 | 60 min |
