Season
Season 7 Episode
- Season 4 Mysterious Ancient Ruins
- Season 4 The Mystery of Genius
- Season 4 What Lies Below?
- Season 4 Secrets of Abandoned Places
- Season 4 Acts of God
- Season 4 Serial Killer Creatures
- Season 4 Mysterious Tombs
- Season 4 Uncanny Curses
- Season 4 Superhuman Feats
- Season 4 Mysteries of the Missing Link
- Season 4 Surviving the Impossible
- Season 4 The Search For King Arthur
- Season 4 Wonders of the Ancient World
- Season 4 The Hunt For Jack The Ripper
- Season 4 The Search for Extraterrestrial Life
- Season 4 Real Life Monsters
- Season 4 America's Lost Treasures
- Season 4 The Bermuda Triangle and the Beyond
- Season 4 Secrets of the Founding Fathers
- Season 4 The Weird Wild West
- Season 4 Devastating Disasters
- Season 4 Mysterious Monoliths
The UnXplained - Season 4 Episode 3 What Lies Below?
6.70 43 minutes More than 80% of the Earth's oceans remain unexplored, and in many ways, the underwater world is the final frontier. As new technology allows us to explore oceans and deep lakes more than ever before, what will we find? Will we discover profound secrets about the oceans? Underwater ruins that were lost for thousands of years? Or perhaps something even more extraordinary?
