Animation at a Stroke
Hold the right side of the image on the table, grasp the middle of the left edge with you fingers and thumb, and pull it back and forth repeatedly. See if you can stop the octopus breaking the submarine in two! For even better results, stick the right side of the image to the table with a piece of sticky tape. Take your phone with the Boomerang app and record the movements backwards and forwards to make a looped video. The hidden image of the octopus will then appear and disappear continuously, and you can then share this with your friends on social networks using the hashtag #muzeumkarlazemana.