Shh! 🤫The giant Pacific octopus is sleeping. But why is he two different colors? Some octopuses change color while they sleep. Research suggests that this is evidence of sleep cycles. During the “quiet” sleep cycle, the octopus’s skin is pale. In the “active” stage, the animal starts to change color. It’s impossible to prove, but this may even suggest that octopuses dream. | New York Aquarium