@JackPerksPhoto They're a 'Bentie' in Shetland. Rescued half a dozen from a dried stream a few years ago and they are now breeding well in the garden ponds.
Interesting view of the Octopus's colour change - apparently white is stress or a warning. I picked one up once that an Otter had left behind (minus a few tentacles) and put it back in the sea, and it changed colour within a second. Amazing animals