PROBLEM TO BE SOLVED: To provide a shellfish locking tool capable of suspending a plurality of shellfishes on one side of the shellfish locking tool.SOLUTION: A shellfish locking tool has a shellfish stop projection, first projections 21a, 21b formed respectively on both sides of the center of a substrate 1, a second projection 22 formed close to the outside of the first projection 21a, and a third projection 23 formed close to the outside of the first projection 21b, in which each projection 2, 21a, 21b, 22, 23 is projected to the same direction side on the same plane, and the first projection 21a and the second projection 22 have such a proximity relationship that deformation on a plane of the substrate between them may cause collision.SELECTED DRAWING: Figure 2【課題】貝係止具の片側あたり複数個の貝を吊持可能な貝係止具を提供する。【解決手段】基材の両端部に形成された貝止め突起と、基材１の中央の両側にそれぞれ形成された第１突起２１ａ、２１ｂと、第１突起２１ａの外側に近接して形成された第２突起２２と、第１突起２１ｂの外側に近接して形成された第３突起２３と、を有し、かつこれらの各突起２、２１ａ、２１ｂ、２２、２３は同一平面上の同一方向側に突出してしており、第１突起２１ａと第２突起２２とはそれらの間の前記基材の前記平面上の変形により衝突する近接関係にある。【選択図】図２
