Blue Planet II is a 2017 British nature documentary series on marine life produced by the BBC Natural History Unit. Like its predecessor, The Blue Planet (2001), it is narrated and presented by naturalist Sir David Attenborough, while the main music score was composed by Hans Zimmer.
The series was debuted on 29 October 2017 and was simulcast on BBC One, BBC One HD and BBC Earth, making it the first natural history series to premiere on the same day in the United Kingdom, Nordic regions, Europe and in Asia.
In the United States, the series premiered on Saturday, January 20, 2018, at 9 PM as part of a five-network simulcast on BBC America, AMC, IFC, Sundance, and WE tv. Subsequent episodes aired on successive Saturdays on BBC America.
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