Luc emailed me a link to this clip of an octopus camouflaging itself, wondering if the footage is real. The camera approaches what looks like an underwater bush, and then out of nowhere this octopus appears, squirts ink, and races away across the ocean floor. I actually remember this clip doing the rounds a year or two ago, and although the octopus's camouflage seems to be some kind of Hollywood special effect, I believe that it's real. According to a version of the clip that can be found on efootage.com, the footage was taken by biologist Roger Hammer (I think I'm hearing that last name correctly, but the sound on the efootage clip is awful). I have no idea who Roger Hammer is, but it might be the same Roger Hammer who works at the Miami-Dade Parks Department and is a specialist on Florida plants (author of Everglades Wildflowers). I'm trying to find a picture of the Miami-Dade Roger Hammer to compare him with the guy in the news clip.