Octopus can do anything even unscrew tight bottle. I watched SCI channel about Octopus' uncanny ability to do things. It's very smart and creative animal. It's Aquarium keeper's fault for placing it near water valve!! (you can see pix clearly that water pipe attached to valve making it easier for Octopus to climb and reach it) I bet Insurance co can figure that out.
If I had one, I would keep it far away from water valve and anything it can unscrew or suck open with it's tentacles
Catty