You likely don't know Roger Hanlon by name, but you may very well have been forwarded the video clip above in the past year--which means you know his research. Dr. Hanlon studies cephalopod camouflage. In addition to controlled experiments in his lab, he has been on thousands of dives following cuttlefish, squid and octopuses through their natural habitats. Using underwater digital video cameras, he and his team are able to capture the intricate physical patterns these animals display across their bodies when they want to go unseen.