Friday beautiful science

Today's Friday beautiful science was posted recently on Pharyngula. I've already watched it about 15 times, it's very cool. This video shows a small cephalopod un-camouflaging itself and fleeing from a diver. Very cool, it manages to change the color of its skin in just over 2 seconds.



PZ Myers has an interesting discussion about the ability of cephalopods to camouflage themselves so quickly. Read it here.

Update:

Here's another video where you can get a really good idea of how quickly they can change color. In this case, it appears the cephalopod is dead, and yet it continues to change color.