UK TV · BBC iPlayer
Blue Planet III season 1: UK air dates and channel
Quick answer · UK
Blue Planet III season 1 premieres in the UK on Sunday, November 1, 2026 on BBC iPlayer at 8:00 p.m.
6 episodes are listed so far, through November 15, 2026.
When does Blue Planet III start?
Blue Planet III starts on BBC One on Sunday, November 1, 2026 at 8 p.m., and the first three episodes are on BBC iPlayer the same day. Sir David Attenborough narrates the 6-part series; five episodes cover different ocean habitats and the last one is about protecting the oceans.
Source: Dork; checked October 24, 2026.
Blue Planet III season 1 episode schedule (UK times)
| Episode | Title | UK date | Time |
|---|---|---|---|
| 1 | Tropical Seas | 8:00 p.m. | |
| 2 | Open Ocean | 8:00 p.m. | |
| 3 | Seasonal Seas | 8:00 p.m. | |
| 4 | Polar Waters | 8:00 p.m. | |
| 5 | The Deep | 8:00 p.m. | |
| 6 | Future Seas | 8:00 p.m. |
Times are as listed for BBC iPlayer; regional schedules can differ. Dates update daily from TVmaze listings.
Where to watch Blue Planet III in the UK
Blue Planet III airs on BBC iPlayer, a streaming service. Episodes are available to stream from the dates above.
Common questions
When does Blue Planet III season 1 start in the UK?
Blue Planet III season 1 premieres in the UK on Sunday, November 1, 2026 on BBC iPlayer at 8:00 p.m.
How many episodes are in season 1?
6 episodes are listed for the UK so far.
Source: TVmaze (CC BY-SA), retrieved October 26, 2026.