Whereas the usual Silverback Productions on the BBC have little ten-minute "behind the scenes" segments bolted onto the end of them (something to do with making up the ad breaks on lesser networks) the Netflix series never had to do this - so all of these bits are condensed into this extremely pleasant but fraught supplementary documentary. I often find these addendums as interesting as the core series and this is no exception - showing the incredible lengths the production teams go to capture the wildlife and scenery. Some moments are particularly intense, and most of those involve the humble walrus. Worth seeking out if you've seen the series!
Review of Our Planet: Behind the Scenes
