Humans have made multiple uses of molluscs, including as food, and they feature in art and in literature.
Useful interactions with molluscs range from their use as food, where species as diverse as snails and squid are eaten in many countries, to the employment of molluscs as shell money and to make dyestuffs and musical instruments, for personal adornment with seashells, pearls, or mother-of-pearl, as items to be collected, as fictionalised sea monsters, and as raw materials for craft items such as Sailor's Valentines. Some bivalves are used as bioindicators to monitor the health of marine and freshwater environments.
