The War Between the Land and the Sea has 5 episodes in total.

Quick Scoop

  • The show is a 2025 BBC One Doctor Who spin-off focusing on UNIT and an ancient ocean species.
  • Season 1 is structured as a single mini-series with 5 episodes, rather than a long multi-season run.
  • Episode titles include “Homo Aqua”, “Plastic Apocalypse”, “The Deep”, “The Witch of the Waterfall”, and “The End of the War”.

Episode count details

  • TV episode guides and UK scheduling info all list the run as 5 episodes, confirming it as a limited series event.
  • The final episode, “The End of the War”, is scheduled for 21 December 2025 in the UK, wrapping up the story within that 5-part arc.

Information gathered from public forums or data available on the internet and portrayed here.