Drain the Oceans: Season 4
This season started on August 2, 2021. The table lists episodes with recorded air dates up to September 28, 2026.
| Ep | Title and air date | My place |
|---|---|---|
| 1 | The Wild West · 47 min | |
| 2 | The Battle for the Black Swan · 47 min | |
| 3 | Hollywood · 47 min | |
| 4 | The First Americans · 47 min | |
| 5 | Venice's Lost Empire · 47 min | |
| 6 | Hurricane Apocalypse · 47 min | |
| 7 | The Great Barrier Reef · 47 min | |
| 8 | Sea of Secrets · 47 min |
