A rare glimpse beneath the surface of nature’s design — this transparent specimen of Calappa calappa reveals the delicate architecture often hidden from view. Carefully preserved without artificial staining, the natural translucency allows subtle structures to emerge under light, creating an almost ethereal glow. Each angle offers a different perspective, making it both a scientific curiosity and a striking display piece. ● Size: the diameter of the container is 3cm, the height is 7cm, the specimen is about 4 cm ● Sample source: Yilan (Daxi)/Fishing Port ● External container: leaded glass bottle ● Contents: specimens, non-toxic glycerin with a purity of 99.7% ● Preservation method: do not drop at room temperature, reduce light ● With LED light base