Blue Planet II premiered on BBC One in October 2017, arriving with enormous expectations after Planet Earth II had broken viewership records the previous year. Produced by James Honeyborne and Mark Brownlow, and narrated by David Attenborough, the series represented a return to the marine focus of the original Blue Planet from 2001. The production spent over four years filming across every ocean on Earth, logging more than 6,000 hours of underwater footage using submersibles, remote cameras, and specialized diving rigs that allowed access to environments no previous crew had reached.
The premiere drew 14.01 million viewers in the United Kingdom, surpassing even Planet Earth II. The series won four BAFTA Awards and an Emmy, but its most significant impact may have been cultural rather than critical. The final episode’s unflinching look at plastic pollution in the oceans triggered what the media widely termed the “Blue Planet effect,” a measurable shift in public attitudes and corporate behavior regarding single-use plastics. For a television program to produce documented real-world policy changes is exceptionally rare, and it speaks to the power of what the series achieved.
Footage From the Unknown Ocean
The underwater cinematography in Blue Planet II pushes into territory that feels genuinely new. The production team used suction-cup cameras attached to large marine animals, deep-sea submersibles capable of reaching 1,000 meters, and low-light camera systems that captured behavior in near-total darkness. The results include footage of species and behaviors never before seen on film. A fish that uses tools, cracking open clams against coral. A giant trevally launching itself from the water to catch seabirds in flight. Methane volcanoes on the ocean floor surrounded by communities of organisms that thrive in toxic environments.
The deep-ocean episodes are particular standouts. The series takes viewers into zones where sunlight doesn’t penetrate and the life forms look like they belong on another planet. Bioluminescent creatures, transparent organisms, and species adapted to crushing pressures are filmed with a clarity that makes these alien environments feel accessible. The production’s ability to find narrative and emotion in environments this remote is one of its most impressive achievements.
Attenborough’s narration anchors the series with the same qualities that have made him the definitive voice of nature programming. At 91 during filming, his delivery carries a weight that goes beyond mere authority. There’s a sense of a man who has spent a lifetime observing the natural world and is now urgently aware of how much is at risk. His ability to shift between wonder, scientific precision, and quiet concern gives the narration an emotional range that complements the footage perfectly.
The coral reef episode is a masterpiece of the format, following the complex relationships and hierarchies of reef ecosystems across day and night cycles. The footage reveals a world of astonishing color, density, and violence happening at scales that human eyes normally can’t perceive. Time-lapse sequences of coral growth, cleaning station dynamics between species, and predation events filmed at high speed all contribute to an episode that feels like a complete ecosystem documentary compressed into fifty minutes.
Familiar Waters and Tonal Shifts
Viewers who watched the original Blue Planet in 2001 occasionally note that certain topics and sequences cover ground that feels well-trodden. Whale migrations, coral reef ecosystems, and deep-sea vents were all subjects of the first series, and while the new footage is technically superior, the conceptual territory isn’t always fresh. The challenge of making a sequel to a marine documentary is that the ocean’s major habitats and inhabitants are broadly the same, and not every segment manages to find a genuinely new angle.
The tonal shift in the final episode has divided some viewers. “Our Blue Planet” moves from the wonder of the previous six episodes into a direct confrontation with human impact on the oceans. Plastic pollution, warming temperatures, and acidification are presented with footage that is deliberately distressing. Most viewers praise the episode and credit it with driving real change. A smaller contingent feel the shift from celebration to advocacy is jarring, and that the environmental messaging, while important, breaks the spell that the rest of the series carefully builds.
The series is also occasionally criticized for the same stylistic choices that affect modern nature documentaries broadly. Musical scoring that amplifies emotional moments, editing that constructs narrative arcs from separate filming events, and sound effects added in post-production all create a viewing experience that is more cinematic than observational. These techniques make the series more accessible and entertaining, but viewers who prefer a more austere documentary style sometimes find the production overly polished.
When Television Changes the World
Blue Planet II’s most remarkable legacy isn’t the footage or the awards but the documented impact on human behavior. In the months following the series finale, major retailers announced plans to reduce single-use plastics, the UK government accelerated its plastic bag charges, and public awareness of ocean pollution spiked measurably in polling data. Researchers subsequently coined the “Blue Planet effect” to describe this phenomenon. It demonstrated that a well-crafted documentary can move beyond entertainment and education into genuine influence on public policy and corporate behavior. The series earned that influence by spending six episodes building wonder and investment in the ocean before showing what’s happening to it.
Should You Watch Blue Planet II?
If the ocean holds any fascination for you, this series delivers experiences you cannot get anywhere else. The deep-sea footage alone justifies the time investment, and the coral reef episode is among the finest individual hours of documentary filmmaking in existence. Watch it even if you’ve seen the original Blue Planet, because the technical leap between the two is enormous. Skip it only if marine environments genuinely don’t interest you, though the series has a way of creating interest where none existed before. Be prepared for the final episode to hit harder than you expect.
The Verdict on Blue Planet II
Blue Planet II is a monumental achievement in nature documentary filmmaking that also managed to change the world. The underwater footage captures marine life with a clarity and intimacy that was technically impossible a generation ago, and David Attenborough’s narration provides the perfect balance of wonder and urgency. Some territory overlaps with the original series, and the tonal shift in the finale may catch viewers off guard. Those are small qualifications against a series that demonstrates what television can accomplish when craft, ambition, and purpose align. The oceans have never been filmed like this before, and the experience of watching this series is both beautiful and necessary.