Ocean authenticity: Blue Planet III rejects digital polish to fight AI skepticism

The BBC has made a deliberate stylistic choice to preserve the imperfect textures of underwater footage, aiming to counter growing public doubt about the reality of nature documentaries.

The first Blue Planet aired in 2001, establishing a baseline for high-definition ocean exploration. Blue Planet II followed in 2016, gaining significant cultural traction for its focus on plastic pollution. The new installment arrives almost a decade after that series, marking the 25th anniversary of the franchise's inception.

In the intervening years, camera technology has advanced significantly, yet the production team moved in the opposite direction regarding visual clarity. The rise of generative AI has prompted the crew to adopt a more organic aesthetic. Executive producer Elizabeth White explained that the technology creates a desire for heightened authenticity. She noted that the deep ocean creatures captured on film are likely more remarkable than any algorithm could conceive, emphasizing that the footage is completely real.

Previously, editors might have discarded scenes with heavy plankton, obscured views from boats or buoys, or poor water conditions. Now, these elements are retained to signal realism. White stated that the team is leaning into this authenticity and expects to incorporate even murkier imagery as AI tools become more prevalent. At a recent press screening, Jack Bootle, the BBC’s head of specialist factual commissioning, issued a specific assurance to journalists. He confirmed that no generative AI was used in the series, noting that it is all real photography.

Bootle described the current period as a golden age of natural history, where viewers may feel they have seen it all. However, he argued that this series is bursting with novel behavior. The footage includes dolphins using sea sponges to block holes in coral and trap fish, a behavior recorded using underwater CCTV developed by producer Yoland Bosiger. Other sequences show a grouper communicating with another fish species, 200,000 crabs lining up to feed, and sea urchins using shells as sun hats.

The production involved four years of filming across five oceans. The team developed specialized equipment, including a mini-dome camera to follow an octopus and a deep-sea selfie stick. Camera operators wore leg-mounted scooters to capture immersive footage, while lasers were employed to film animals in the deep sea. A penguin sequence in the series echoes the famous iguana versus snakes moment from the Planet Earth II era.

The series also addresses environmental threats, specifically the impact of the climate crisis. One episode illustrates how warmer seas are killing the sea anemones where clownfish live, showing the fish attempting to repair their homes. The theme of pollution continues from the previous series, with a focus on forever chemicals. Narrated by David Attenborough, who is 100 years old, the series features his active involvement in script changes. Bosiger noted that Attenborough remains excited when shown new footage.

Regarding the BBC’s recent cost-cutting measures, White declined to comment on their impact on the unit’s reputation. She did note, however, that the series saved money by utilizing more local crews on location than in previous productions. The new series is scheduled to premiere on BBC1 and iPlayer on Sunday, 1 November.