Drain the Oceans
Sea of Secrets (4x10)
Season finale
Air date: Aug 23, 2021
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.
- Premiered: May 2018
- Episodes: 68
- Followers: 20
- Running
- National Geographic
- Monday at 21
