[1] In the context of the COVID-19 pandemic, Attenborough saw the series as well timed, saying: "This year perhaps more than ever, people are finding comfort and solace in the natural world".

[3] Unable to record in his usual studio in Bristol, Attenborough converted his dining room into a sound stage by hanging duvets from the walls.

[10] The premiere "Volcano" features flamingo coverage at Lake Natron that Attenborough described as "one of the most memorable sequences [that he'd] seen on television".

[3] Camera operator Sophie Darlington said that not stepping on the Christmas Island red crabs seen in "Weather" was a difficulty, with crew having to rake the ground to clear the creatures away.

[1] A wood frog in one episode freezes itself as an alternative to hibernation; to capture this action, crew filmed inside a freezer for 10 days.

[3] A Perfect Planet was one of the most popular programmes on BBC iPlayer in the first week of 2021, which saw the highest viewing figures in the platform's history.

[14] Rating the first episode five out of five stars, The Times' Carol Midgley found scenes "stunning" and "breathtaking", though filled with "torture and suffering".

[15] Anita Singh of The Telegraph gave the first episode four stars, praising the "quality of the photography" and Attenborough's narration as "spare and intelligent".

[16][17] In another four-star review, The Independent's Sean O'Grady found the visuals "as awesome in scale and majesty as anything that has gone before" and lauded the series' theme as "clever and novel".