Nearly 25 years after the first Blue Planet and almost a decade after Blue Planet II highlighted plastic pollution, the new series showcases novel animal behaviour and new technology, including the world's first underwater CCTV camera, dubbed "stonefish". Executive producer Elizabeth White said AI "makes us want to be even more authentic", noting the creatures filmed in the deep ocean "are probably more remarkable than AI could imagine and it's completely real". She said the team now leaves in murkier water, plankton and other elements that would previously have been framed out: "We're really leaning into that authenticity."
BBC specialist factual commissioning head Jack Bootle assured journalists: "No gen AI was used in this series. Not a single frame. It's all real photography." He described a "golden age of natural history-making" with a series "bursting with novel behaviour".
Filmed over four years across five oceans, the series features never-before-seen footage of dolphins using sea sponges to block holes in coral to trap fish, captured by the "stonefish" camera. Other sequences include grouper communicating with another species of fish, 200,000 crabs feeding in formation, sea urchins using shells as sun hats, and penguin footage echoing Planet Earth II's "iguana v snakes" chase. Camera innovations include a mini-dome rig, a "deep-sea selfie stick", leg-mounted scooters and lasers for filming deep-sea creatures.
The series also addresses threats to the ocean: the climate crisis killing off the sea where anemone clown fish live, plastics and "forever chemicals". Attenborough, who is 100, was "very much involved" and made changes to scripts. Asked about the BBC's £500m cost-cutting drive, White noted the series made savings by using more local crews on location.
