Schelp, achatina achatina (1644 - 1652) by Wenceslaus Hollar https://www.rawpixel.com/image/13776816/schelp-achatina-achatina-1644-1652-wenceslaus-hollarFree Image from public domain licenseDifferent types of seashells illustration from Zoology of New York (1842–1844) by James Ellsworth De Kay. Original… https://www.rawpixel.com/image/329403/free-illustration-image-sea-shell-seashellFree Image from public domain license