貝殼剖面的標本素描

A conch is cut open longitudinally, and the inner spiral cavity, thin shell, and outer texture are all discernible in the same scientific illustration; beige paper, graphite, and a small amount of light blue watercolor, no fictional organs or text labels.

一枚海螺被縱向剖開，螺旋內腔、薄殼層和外表紋路都在同一科學插畫裡可辨；米色紙張、石墨與少量淡藍水彩，無虛構器官或文字標註。