Drain the Oceans
The First Americans  

Deep inside the labyrinth of a flooded cave system, divers discover human remains...together with the bones of giant prehistoric creatures.  They're discoveries that could revolutionise our understanding of how the first humans came to the Americas. 

Combining undersea exploration with innovative visualisations, Drain The Oceans reveals hidden evidence of amazing undersea mysteries. Not ‘artists impressions’ but what is actually there – down to the very last rivet. And, for it’s fourth season, it embraces a gripping new style, telling stories purely through the words of explorers and archaeologists, putting viewers right by their side.