Subream was made an image of Mr. Mitsuaki Wada, a fly-angler, as an inspector. A swimming minnow of a new sensation that imitated the state of swimming, sliding, as well as the shape of adults of the large aquatic insects Higenakagawa tobigera. At the timing when the whale naga emerges or laying eggs violently moves the surface, the subsurface is downcrossed, the power is exercised when aiming at down, the floating position of the water surface and the horizontal floating posture, the lip grasps the water surely and grasps the water surely and the water surface It is aimed at swimming just under. Basic hook setting is one in tail, this is setting which can correspond also to the regulation of one barbless single hook. The action is almost immovable straight swimming, slightly vibrating if you increase the speed. It is thrilling to deceive a partner by using a surface film called a water surface in combination with a lifting that made use of the buoyancy hidden in a small body. The timing when the whale naga occurs is short and may be biased, but it should promise an exciting scene.