produced & directed by Giles Badger ; a BBC Studios Natural History Unit production ; co-produced with BBC America, Tencent Penguin Pictures, ZDF, France Télévisions and China Media Group CCTV9
produced by NGF in co-production with ZDF/3sat ; producers, Nikolaus Geyrhalter, Markus Glaser, Michael Kitzberger, Wolfgang Widerhofer ; directed and photographed by Nikolaus Geyrhalte ; script, Nikolaus Geyrhalter, Wolfgang Widerhofer