Squids are one of the animals that have colour change properties. Thanks to a protein, they can adapt his skin colour to that of the environment to avoid being caught.
Reflectin, the protein that allows squid to change colour, has been replicated by the group of researchers. Afterwards, this protein is exposed to acetic acid. The final result nowadays is a sticker that can be add and peeled off when desired. It still needs more development, but the first results are quite good.
Once again, nature provides inspiration for new developments. This time squids are a source of fresh ideas for camouflage.