a BBC Studios Natural History Unit production ; a co-production with BBC America, Tencent, WDR, France Televisions and CCTV9 ; a BBC Open University partnership ; executive producer, James Honeyborne ; series producer, Mark Brownlow ; producers, Miles Barton, Orla Doherty, Kathryn Jeffs, Will Ridgeon, John Ruthven, Jonathan Smith
a BBC/Discovery/Antena 3 Television S.A./ZDF/Open University/Skai co-production in association with Discovery Canada ; series producer, Vanessa Berlowitz ; producers, Miles Barton, Vanessa Berlowitz, Kathryn Jeffs, Mark Linfield, Dan Rees
2 Entertain ; BBC ; BBC Earth ; a BBC/Discovery Channel/France Television co-production ; series producer, Dale Templar ; executive producer, Brian Leith ; BBC Productions Bristol/Wales