I read the folllowing article today which I found very interesting: The No-Doze Soldier: Military Seeking Radical Ways of Stumping Need for Sleep This article interests me for two reasons -- one, it addresses animal behavior and got me thinking about octopuses, and two, it has been a long-time interest of mine to find a way to require less sleep for myself. Imagine all the things I could accomplish if I could be "productive" during the hours I usually spend asleep! (Hey, managing this site takes time you know... And another thing... ) Anyway... the article above addresses the non-sleep behavior of certain animals -- for example, it remarks on how dolphins must stay awake at all hours, to the extent they are aware enough to return to the surface to breathe. So, all this leads to my question: do we know anything about how/whether octopuses sleep? Would be interested in hearing what anyone here knows about this.