The process of hatchery 1.Selecting female oysters and collecting ova 2.Selecting mele oysters and collecting sperm 3.Fertilization In order to obtain high quality mother oysters,those with thick shells and a beautifully colored inner surface are selected for breeding. Fertilization Hatched larvae or spats spend 15-25 days floating in the water of tanks,and then advance to the stage of fastening themselves to objects. At this stage,"collectors" made of artificial fibers are put in the tanks,the spats settle themselves on the nets. Then they are placed cages and suspended in the sea. Off shore farm basket Spats settle on collector nets Mother oysters are cultured in various kind of cages in accordance with their growth. During culturing,living organisms such as barnacles are removed from the oyster shells repeatedly. Two years after culturing,oysters fully mature to become mother oysters. Three months before the implantation,the oysters are packed in baskets. The oysters' physiological activity will be slowed and the shock of the implantation lessened.