Planet Earth II has been the television phenomenon of 2016.
The BBC series on the world's natural wonders has become must see TV every Sunday night for the past six weeks.
But on Sunday, the final episode in the six-instalment run was aired, and featured a poignant final message from the show's incomparable narrator and the BBC's wildlife expert for the ages, Sir David Attenborough.
The iconic broadcaster, now 90-years-old, used his send off for the show - which he delivered from the very top of the Shard high above London, to implore humanity to help make the world a better place for every creature in it.
https://twitter.com/BBCOne/status/808051150020714496
And fans on Twitter were quick to register their appreciation for the show - and for Sir David's impeccable presenting, with some even getting teary at his sign-off message.
https://twitter.com/Fearnecotton/status/808054195039379457
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https://twitter.com/JennyCostello/status/808059055432417280
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https://twitter.com/SamHollyAndrews/status/808057646578339845
https://twitter.com/ChristinaSNP/status/808054428951605249
https://twitter.com/WiddicombeKyle/status/808059222017671173
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https://twitter.com/KyleMavris/status/808058791690469377
https://twitter.com/CatNorth10/status/808058655866290178
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And here's an insight into how the great man records his incredible narration.
https://twitter.com/BBCOne/status/808053496956076032
