Nature never stops surprising us, that’s for sure. This time, marine biologists don’t know much about the octopus, one of the most mysterious sea creatures. After a rare but cute video shows that these animals could dream. But what’s even more interesting is that the animal changes color while it sleeps. The lovely video is from the PBS documentary series “Octopus: Making Contact,” which aired last month. And it shows an octopus named Heidi sleeping in a tank of water. After a few seconds, its color starts to change.

A marine biologist at Alaska Pacific University, David Scheel says that the animal is actually dreaming. Scheel said, “If she dreams, this is a big moment.” “You could almost describe the changes in your body and describe the dream. She sees a crab, and her color changes a little bit. Then she turns all dark, which octopuses do when they leave the bottom. This disguise makes it look like she just caught a crab and is going to sit there and eat it. She doesn’t want anyone to see her.”

On the other hand, the octopus’s mantle is a very sensitive part of its body, which scientists find hard to believe and almost can’t explain. Because the creature has more than one brain, it can change its skin color with great accuracy. So octopuses rarely use it when they are sleeping. Scheel said, “It’s very unusual to see her mantle change color like that and to see all the different color patterns flashing one after the other. You don’t usually see that when an animal is sleeping.” “This is really interesting!” We can’t do anything about the rare event until the marine scientist can explain it, so all we can do is look at the beautiful video:

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