Blue Planet 3: Sir David Attenborough returns for new BBC series

The BBC has revealed initial details for the upcoming nature documentary series Blue Planet 3, which will be narrated by Sir David Attenborough. The corporation unveiled a first look at the new instalment on Tuesday 7 October 2026 during a launch event held in central London. Passers-by in Piccadilly Circus witnessed a special takeover of the famous screens, transforming them into underwater scenes.

Attenborough's Return for Centennial Series

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Sir David Attenborough, who celebrated his 100th birthday this year, returns to lend his voice to the series, promising a deeper exploration of marine life. In a recorded message played at the launch, he reflected on the significance of the project. He stated that 25 years after the first Blue Planet series, he did not anticipate narrating a third instalment in his centennial year. Sir David described the ocean as an endlessly fascinating place, noting that the new programmes uncover a more surprising, sophisticated, and important array of underwater life than previously realised.

The production of Blue Planet 3 has been underway for nearly four years, coinciding with the 25th anniversary of the original series' premiere. The series features an original score by Hans Zimmer and Bleeding Fingers Music, alongside the song Into The Deep (Seas Cry), co-written by singer Jade Thirlwall.

“25 years ago, when I narrated the first Blue Planet series, it didn’t occur to me that I would be narrating a third series in my centennial year.”

Sir David Attenborough

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Broadcast and Live Events

Blue Planet 3 is anticipated to air later this autumn, although a precise broadcast date has not yet been confirmed. Reports suggest the series will be available next month. In addition to the television broadcast, the series' official score will be performed live by an orchestra during the Blue Planet III Live in Concert tour, scheduled to travel across the UK and Europe in 2027.