1. The main species of oyster culture in Rushan are Pacific oysters, which adopt the raft culture method. The breeding areas are mainly distributed in the open waters from Rushankou in the west to Langnuankou in the east. The oyster industry has become one of the pillar industries of Rushan City's fishery economy.

2. Oyster is a shellfish with high economic and nutritional value. Fresh oyster soft body (meat) contains 4.5% to 4.7% protein, 7% to 10% fat, and 19% glycogen. %~38%, as well as B vitamins and 18 kinds of amino acids. Oysters are shellfish that can be eaten raw. People in Rushan have been eating oysters raw and shrimps since ancient times. Coastal fishermen often pry open the upper shells of oysters on the rocks and eat their meat raw. Oysters can also be made into oyster sauce, canned food, etc. Oyster meat contains extremely high zinc content, which is very beneficial to men's health. The main ingredient of the famous emerging drug Golden Oyster is oyster extract. Oyster shells can also be used as medicine. They are slightly cold in nature and salty in taste. They have the functions of insulating yang, fixing astringency, resolving phlegm and softening hardness. It is mainly used to treat dizziness, spontaneous sweating, night sweats, spermatorrhea, uterine bleeding, vaginal discharge and scrofula.