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Big Blue

Series 1 - Episode 4 Big Blue



This was one of the first series to show the impact of plastic pollution on the ocean and its wildlife. In this episode (first shown in 2017) we’re in the “Big Blue”, thousands of kilometres from land in what David Attenborough calls “the world’s greatest wilderness”. But it’s still a place where a whale calf can ingest dangerous amounts of plastic…

Elsewhere, there’s a mighty feeding frenzy starring spinner dolphins, tuna and sailfish, and the strange and beautiful sight of a family of sperm whales simply hanging vertically in the water, the owners of the biggest brain on the planet taking time off for a sleep.


Wildlife that live thousands of kilometres from land, featuring footage of baby turtles using debris as life rafts and whales sharks embarking on lengthy voyages across the Pacific to the point where it is safest to give birth. Special pressure-proof cameras are used to film sperm whales hunting for squid a kilometre beneath the surface and the impact of plastic pollution on the oceans is revealed.

Cast & Crew

Narrator David Attenborough
Executive Producer James Honeyborne
Producer John Ruthven
Series Producer Mark Brownlow