Rock balsam plant (Clusia rosea): flowering and fruiting branch. Coloured etching by J. Pass, c. 1800, after J. Ihle. https://www.rawpixel.com/image/13951721/image-flower-plant-medicineFree Image from public domain licenseThe soldier crab, in its shell and out of its shell;; the hermit crabin its shell and out of its shelll; bottom, the land… https://www.rawpixel.com/image/13961280/image-cartoon-sea-animalFree Image from public domain license