Flexible fishing lure tails and appendages having extending or projecting shoulder surfaces to facilitate a simulated swimming action by the drag and eddy principle of water flow. One or more shoulders are provided in the surfaces of the flexible fishing lure tails to facilitate the swimming action as the lure to which the tail or appendage is attached is retrieved through a water body. This swimming action due to the vibration of the tail and appendage segment and the body of the fishing lure is unique and simulates live lizards, worms, crawfish, grubs, minnows and the like, a primary characteristic that attracts fish. The tail and appendage segments can be removably or permanently fixed to both hard and soft body lures or molded in combination with a lure body of selected length, size, color and plastic composition characteristics to facilitate the desired swimming action and vibration and thus the attraction to game fish of every variety.