The War Between the Land and the Sea

16+2025•7.6/10

Sci-Fi & FantasyDrama

Ratings

🎬TMDb

7.6/10(193)

When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. With the entire population at risk, UNIT step into action as the land and sea wage war.

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Production

Bad Wolf, BBC Studios Productions

Language

Status

Ended

First Aired

December 7, 2025

Last Aired

December 21, 2025

Networks

BBC One

Created By

Russell T Davies

Trailers & Videos

Where to Watch

Region US · Lang EN

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Seasons & Episodes

Select a season to view episodes. Reddit links may contain spoilers.

Season

Homo Aqua

Air date: 2025-12-07

Barclay's ordinary life becomes a world of terror when an ancient species rises from the sea. As UNIT fights for control, the summit on the Thames reveals terrifying secrets.

Plastic Apocalypse

Air date: 2025-12-07

Barclay becomes humanity's ambassador when the mysterious Salt emerges from the Tank. But his family's life is torn apart when Salt wreaks revenge upon all mankind.

The Deep

Air date: 2025-12-14

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 Witch of the Waterfall

Air date: 2025-12-14

Barclay and Salt go on the run in a war-torn London as UNIT reels from disaster. But when Tide threatens the land and Gunsberg advances his plans, the Severance schemes demand blood.

The End of the War

Air date: 2025-12-21

Barclay stands alone, Salt is lost, UNIT is powerless, and the oceans rise as the war reaches its climax. While traitors conspire, can Barclay find Salt before it's too late?