foto credits: Afbeelding van edmondlafoto via Pixabay

Octopuses, like humans, sleep in two stages

Do octopuses dream? Scientists haven’t cracked that mystery, but they have come a bit closer. A new study reveals that, like us, our eight-legged friends experience both an active and a quiet sleep stage. Because humans and octopuses are separated by more than 500 million years of evolution, the discovery suggests a two-stage sleep pattern evolved independently twice.

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