Number of Discs: 3
Duration: 225 minutes
Release Date: Feb 23, 2026
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.
Deep Dive’ Documentary – Access all areas: go behind the scenes with cast and crew (~30 mins)
Character Dossiers: Barclay, Ibrahim, Kate, Salt & Homo Aqua
Set Tours: Empress Hall and Homo Aqua Habitat
Video Diaries: Alex and Homo Aqua
Featurettes:
Interview with the Writers (~15 mins)
Trailer
Extended and deleted scenes for Episodes 1–4
Exclusive to DVD, Blu-ray & Steelbook:
Audio Commentaries for Episodes 1 & 3
Sea Devils (2025 version) – a brand new 90-minute edit of the classic Third Doctor story
Kate Stewart page | The Sea Devils page | UNIT page | BBC DVD Index page | Go back home
