An extraction mechanism is an extraction mechanism of dried seaweed, configured to adhere the dried seaweed to molded rice ball. The mechanism includes an accommodation body configured to accommodate a plurality of dried seaweeds in a stacked manner, an opening formed in a bottom of the accommodation body and configured to expose a lowermost dried seaweed, and a control device. The control device is configured to extract the lowermost dried seaweed by positioning the opening of the accommodation body at a location near directly above the rice ball, and moving at least one of the accommodation body and the rice ball in a stacking direction of the dried seaweeds to change a relative distance between the lowermost dried seaweed exposed from the opening of the accommodation body and the rice ball.
