Shellfish farming in the Mediterranean differs from others by the absence of tide. The oysters are raised in nurseries and glued every 3,15 inches (8 cm) by 3 or 4 on ropes 10 to 16 ft (3 to 5 m) long. Wooden and metal poles, called oyster tables, support the ropes. The oysters will remain submerged for an average of one year compared to three in the Atlantic because of the organic richness of the lagoon. When they reach maturity, they are detached, washed, and placed for another three weeks in bags to perfect their flesh content.