Some octopuses change color while they sleep, new research suggests. Here's what scientists believe the color change means.
원문출처 : https://www.cnn.com/videos/world/2021/03/25/octopus-color-change-sleep-na-mh-orig.cnn
원문출처 : https://www.cnn.com/videos/world/2021/03/25/octopus-color-change-sleep-na-mh-orig.cnn