[ame=http://youtu.be/W2CgtJU3ckY]Artificial muscles that can camouflage like squid and zebrafish - YouTube[/ame]
Researchers from the University of Bristol have created artificial muscles that can be transformed at the flick of a switch to mimic the remarkable camouflaging abilities of nature's organisms.
Two individual mechanisms are demonstrated in the above video based on the colour-changing effects seen in squid and zebrafish.
(source: IOP Science)