👉 The term "corallum" is a Latin word that means "pearl," referring to the large, round, and often white-colored shells found on the surface of many types of mollusk. It was originally used by ancient Greek philosophers and scientists to describe the appearance of the shells of certain species, including the sea urchin, which they believed had the ability to produce pearls. The term has since been applied to a variety of other marine animals, including clams and oysters.
