【Details】 Sarubou Shell These are shells of the Sarubou clam (Arca subcrenata) collected from the coast of Saga Prefecture. They are related to the ark shell, and are characterized by radial ribs on the surface of the shell and a swollen hinge (the base). 【Sarubou Clam】 The Sarubou clam is a species of marine bivalve belonging to the order Arcida and the family Arcidae, and is closely related to the ark shell. The Sarubou clam is distributed in Japan from Tokyo Bay to the Ariake Sea in Kyushu. The way to distinguish them is by the number of radial ribs on the shell, which can be used to identify ark shells, Sarubou clams, and Sato clams. By the way, Ark shells have 42 ribs. Sarubou clams have 30 (～34) ribs. Sato clams have 38 (～40) ribs. Not all shells fit these numbers, and there may be exceptions, but it's generally accurate. ■ Size of items for sale and shipping Approximately 3cm to 5cm 30 pieces in total Plus a few extra pieces(^^) ◆ For handmade materials ◆ How about using them as materials for art works? ◆ Shells collected on the coast of Saga Prefecture 【Disinfection】 Boiling, sun-drying ★ Since they are all natural materials, there may be small scratches, abrasions, cracks, and sand that has not been removed. ★ Please be aware of this if you are not concerned about minor details. ◆ Shipping Nekoposu (Yamato Transport's mail delivery service) They will be packed with newspaper or bubble wrap as cushioning material, but in the rare event, the shells may chip during shipping. Please understand.