How are mollusks used by human beings?

Mollusks are utilized by humans in various ways, primarily as a source of food; species like clams, oysters, and squids are staples in many cuisines around the world. Additionally, they are used in the production of pearls and shells for jewelry and decorative items. In some cultures, mollusks are also employed in traditional medicine and as indicators of environmental health in marine ecosystems. Furthermore, their shells can be used as tools or ornaments in various crafts.