Biominerals are naturally occurring minerals that are produced by living organisms. They play essential roles in various biological processes, such as providing structural support and aiding in metabolism. Common examples of biominerals include calcium carbonate in shells and hydroxyapatite in bones. These minerals are formed through biological mechanisms, often involving the precipitation of minerals from body fluids. The study of biominerals helps scientists understand how organisms interact with their environment and can inspire advancements in materials science and medicine, such as the development of biomimetic materials.