The mysterious protozoa float through history on secret errands of their own. Named the “first animals” by the Regency-era scientists who discovered them, they seem to be a miracle of natural life. Adrift in salty marine waters and specimen glasses, their tiny bodies combust with the secrets of the universe. They move on strange and quiet passageways throughout the depths of the ocean, following roads known only to themselves. Zoa lives in this moment of flux – half animal, half plant – small creatures living out the rhythms of an ever-evolving life with microscopic tenderness.