A fingerprint that can randomly fine-tune buoyancy, which is shaped by clay having buoyancy, fluorescing, and water repellency in water. The clay is insoluble in water and retains its shape after being kneaded in water. In use, the clay is fixed at any position of the fishing line in a manner that covers the fishing line. The clay is then hand-molded into a smooth surface with a streamlined shape. Therefore, the print can be quickly formed and fixed on the line at any position of the line. After the target is printed, it can be removed from the line for recycling. The recyclable recycling of this creation not only saves the fisherman's expenses, but also meets the environmental protection requirements.一種可隨機微調浮力的目印，其以在水中具有浮力、螢光性、防水性的黏土塑形而成。該黏土不溶於水，可在水中保持捏塑後的形狀。使用時，該黏土以包覆釣線的方式固定在該釣線的任何位置處。再用手將黏土捏塑成表面光滑且外形具流線型的目印。故該目印可在釣線的任何位置快速成型與固定在該釣線上。該目印在使用後，可由該釣線上取下回收，以便下次再利用。本創作的可回收再利用，除了可節省釣者的支出外，更符合環保要求。
