About 1 year. The growth cycle of the yellow sea snail is about 1 year. Under suitable environmental conditions, the larvae of the yellow sea snail will enter the larval stage after hatching, and the larval stage lasts about 1 month. Subsequently, the larvae will gradually transform into adults, and the duration of the adult stage is about 10 months. During the adult stage, the yellow sea snail will reproduce and lay eggs. After completing reproduction, the life cycle of the yellow sea snail will end and the adult will die.