Barclay makes a terrifying descent into the world of Homo Aqua. Back on the land, Kate stands alone as Downing Street conspires with the army to change the course of the war.

The War Between the Land and the Sea Season 1 Episodes...

• s01e01 - Homo Aqua
• s01e02 - Plastic Apocalypse
• s01e03 - The Deep
• s01e04 - The Witch of the Waterfall
• s01e05 - The End of the War

The War Between the Land and the Sea Show Summary

When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. UNIT must take action to prevent a global war once an ancient species, the Sea Devils, comes out from the sea.