What if Octopuses Are Colorful Sleepers?

Curious why octopuses change colors when they sleep?

Image of a colorful octopus sleeping in the sea
Photo by Kaya Patel on Unsplash

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Matthew Murrie

Author of The Book of What If…?, Founder of What If Curiosity, and Creator of Curiosity-Based Thinking and Curiosity-Based Learning, turning ideas into actions.