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Sleeping octopuses might experience fleeting dreams – new study

By Alexandra Schnell, Research Fellow in Behavioural Ecology, Darwin College, University of Cambridge
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A couple of years ago an octopus named Heidi was filmed changing colours as she slept. The footage shows her flickering from a ghostly shade of white to yellow and then turning a deep shade of burgundy before morphing into a mottled green pattern.

The video went viral. Millions were instantly mesmerised by Heidi in her slumber, particularly because the narrator speculates that she’s having a vivid dream – dreaming that she’s hunting and eating a crab, like a snoozing dog chasing “dream rabbits”.


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