Isn’t it amazing that a simple chemical compound, calcium carbonate, can create so much? It forms the hard outer shells of mollusks, who spin it into a myriad of forms and colors. As mollusks develop, they absorb salt and chemicals from sea water and secrete proteins and calcium carbonate, which hardens on the outside of their bodies, creating a hard shell. Mollusks continue to grow their shells as they age, adding layers year by year. When they die, they leave behind their beautiful creations, small gifts from a vast and mysterious ocean. Tips… Read More