Blue Planet III live stream: where to watch — UK premiere 1 November at 8 p.m. GMT, US debut 23 January 2027 on AMC+ | BBC iPlayer (UK, free), AMC+ (US, paid), BBC America (US, via live TV services) | Episodes air weekly through 6 December 2026 in the UK. US rollout begins 23 January 2027 | No confirmed Australian or Canadian broadcast date yet, though Blue Ant Media holds Canadian rights and 9Now is expected to carry it in Australia when available | Free streaming only confirmed for UK (BBC iPlayer) and pending for Australia (9Now).

All other regions require subscription or linear TV access | The six-episode series features Sir David Attenborough and uses splash drones, submerged domes, and the Alvin submersible to film tropical seas, polar waters, the deep ocean, and conservation efforts in 'Future Seas' | Episode 1 ('Tropical Seas') airs Sunday 1 November. Finale ('Future Seas') airs Sunday 6 December