David Attenborough's Blue Planet III premieres on BBC One at 8pm on Sunday, opening in tropical waters where near-constant sunlight supports an unusually dense variety of life, according to The Guardian's television preview. The Guardian reports that the series returns with footage from the BBC Natural History Unit that it describes as startling in quality.
The Guardian notes that Attenborough, in his 101st year, continues to present wildlife material. The opening episode, per the preview, includes tawny nurse sharks hunting as a coordinated group and a confrontation between two shrimps and a starfish.
Why it matters
Blue Planet is one of the BBC's best-known natural history strands, and its return carries weight beyond the schedule. The Guardian's preview argues that life in the deep ocean is as unfamiliar and as abundant as life on land, and that the series makes that case through what it can now capture on camera.
The emphasis on filming quality is central to that argument. According to The Guardian, the standard of footage the Natural History Unit records has reached a level the preview calls genuinely astonishing. For viewers, that means behaviour that would once have gone unseen is now broadcast in detail.
The series also draws on outside expertise. The Daily Echo reports that scientists at Southampton contributed to the programme, tying a flagship broadcast to university-based research.
Sharks that hunt as a unit and a shrimp that takes an arm
The Guardian singles out two sequences from the first episode. The first shows tawny nurse sharks working together to pursue prey, a group strategy rather than a solitary hunt. The second is a struggle between a pair of shrimps and a starfish that ends with the shrimps removing and eating one of the starfish's arms. The Guardian adds that the arm regrows, so the loss is temporary.
The setting for these scenes is the tropical ocean, where sunlight reaches the water throughout the year. The Guardian's preview presents that steady light as the reason such a wide range of species can thrive there, and frames the episode as a survey of that abundance rather than a single narrative.
A full evening of options around the main event
Blue Planet III is not the only programme competing for attention on Sunday. The Guardian's listings place the final of a young musician competition on BBC Two at 7pm, hosted by Petroc Trelawny. Three players — violinist Sofia Demetriades, saxophonist Kezia Colton and recorder player Alma Nunez Debretzeni — perform at Bristol Beacon, where the Guardian says they must weigh technical precision against the extra spark of a standout performance.
At 9pm on BBC One, a crime drama reaches its third episode. The Guardian reports that Michael is presented with an ultimatum carrying serious consequences, while the Phelans' difficulties grow as they look for Banksey. The preview credits James Nelson-Joyce with a lead performance of controlled menace.
BBC Two at 9pm brings the ninth season of Bob and Paul's riverbank programme. According to The Guardian, the episode includes a tribute to Ted that is undercut when Bob wonders whether the deceased dog will "go up or down", followed by fishing on Norfolk's rivers.
Channel 4 at 9pm airs a Bradley Walsh gameshow. The Guardian's preview treats the scheduling as unusual for Sunday primetime and notes that, given the production company's history and the thin detail available, speculation about a twist is growing. The programme is billed as a quiz event with a million dollars at stake.
Sport fills the afternoon. The Guardian lists Charlton v Chelsea in the Women's Super League at 2.15pm on BBC Two, played at The Valley, and Liverpool v Arsenal in the Premier League at 3pm on Sky Sports Main Event. Newcastle v Everton follows on Monday at 6.30pm.
How to watch
Live Science has published a guide to streaming the new series online for viewers who miss the broadcast or watch outside the UK. The Guardian's listing gives the start time as 8pm on BBC One.
The next episode will follow in the coming weeks, with the tropical opening serving as the entry point for the series. For viewers deciding what to watch on Sunday, the choice comes down to whether they want the ocean footage at 8pm or one of the dramas and competitions that follow.
