The present invention has an advantage over the currently used toxic lead sinkers because when lost or intentionally jettisoned the sinker degrades leaving no toxic residue to pollute the fishing grounds. This invention is a hybrid fishing sinker shaped like a diving plane with sufficient weight so as to reach appropriate depths. The sinker is composed of a compound of steel granules and Portland cement. During manufacturing, this compound is cast into a mold and solidifies. When fishing the diving quality of the shape compensates for the reduced weight of the steel and cement compound which are not as dense as the currently employed lead metal now being restricted due to environmental concerns.