Filmmakers have captured an octopus's lucky escape after venturing from her normal underwater habitat. The sequence is part of the latest Blue Planet series from Sir David Attenborough, who has continued to produce nature documentaries into his 101st year. In the third instalment, viewers are taken around the world - from icy polar waters to the tropics, and out into the open oceans. For UK audience, Blue Planet III starts on Sunday 1st November, 8pm, BBC One and iPlayer.