Octopus sleep shifts between quiet and frenzied stages
Jessica Huszar
Originally published by UW Medicine Newsroom Octopuses, those smart, eight-armed mollusks, transition between two sleep stages, quiet and active. Their quiet periods of slumber are punctuated by short bursts of frenzied activity. Their arms and eyes twitch, their breathing rate quickens, and their skin flashes with vibrant colors. Researchers from the Okinawa Institute of Science and [...]