<P> 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 . </P> <P> 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 . </P> <P> 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 . </P> <P> The series was announced by the BBC in 2013 with the working title Oceans, but the title was later changed to Blue Planet II as it revealed on 19 February 2017 . Filming took place over a course of more than four years; involving 125 expeditions across 39 countries and produced more than 6,000 hours of underwater dive footage from over an estimated 4000 dives . </P>

When is blue planet 2 on tv in usa