Camouflage

According to Google the etymology of this word is as such:
First World War: from French, from camoufler ‘to disguise’ (originally thieves' slang), from Italian camuffare ‘disguise, deceive’, perhaps by association with French camouflet ‘whiff of smoke in the face’.

This story from the Guardian on new camouflage studies gives a basic introduction on how we can use camouflage studies for other purposes, whether for safety or disguise.

Another article, this one from the New York Times, chronicles a very interesting ancillary topic--translucence and "mirroring" in animals. And there's a little bioluminescence in there to boot!

And here's a great video of blanching, or the act of a normally transparent animal making themselves opaque: http://nyti.ms/1pjCUm3