BBC's 2017 ocean follow-up to Blue Planet. Triggered global single-use-plastic legislation; documentary as policy lever.
From Wikipedia
Blue Planet II is a 2017 British nature documentary series on marine life produced as a co-production between the BBC Natural History Unit, BBC America, Tencent, WDR, France Télévisions and CCTV-9 in partnership with The Open University. It is a successor to The Blue Planet (2001) with naturalist Sir David Attenborough reprising his role as the narrator.