Typical subjects of art include humans, flowers, and natural landscapes. An octopus is not a typical subject of art. However, there area few web sites that focus exclusively on the small genre of the octopus, and other cephalopods, in artwork.
Skot Olsen is a cephalopod artist, with works such as Only the Squid Die Young. The site named simply Squid has cephalopod news, but includes many articles about squidly art. Cephalopod Tea Party also documents cephalopods in art, including media ranging from jewelry to chandeliers.