And it's absolutely mesmerizing!
"Do octopuses dream?" According to Nature on PBS, the brilliant change of color might be an indicator that the sleeping octopus is in fact dreaming.
"If she is dreaming, this is a dramatic moment," said Dr Scheel, a marine biologist narrating the clip from an upcoming PBS nature documentary.
"She sees a crab and her color starts to change a little bit, then she turns all dark, octopuses will do that when they leave the bottom (of the ocean)."
"This is a camouflage," Dr. Scheel continues, "like she's just subdued a crab and now she's going to sit there and eat it and she doesn't want anyone to notice her."
"To see the color come and go on her mantle like that, just to be able to see all the different color patterns flashing one after the other, you don't normally see that when an animal's sleeping."
It truly is a spectacular sight.