Changhai County has unique marine natural environment conditions, many islands and reefs, smooth water flow and stable physical and chemical environmental factors. The water depth is 3-35 meters, which belongs to Class I water quality. The annual average seawater temperature is 12. 1℃? , the highest water temperature is 24.7 C? The lowest water temperature is 65438 0.5℃, and the salinity is at? 29-33%，PH 7.9-8.4。 The sea area is rich in nutrients, with rapid water depth and clean water quality. The sediments are rock bottom or fine sand bottom, and are rich in algae, especially phytoplankton suitable for scallop growth.
Due to the special environment in Changhai Sea, such as rapid water depth, strong water exchange and self-purification ability, warm in winter and cool in summer, free from the influence of river runoff and pollution from factories and mines along the mainland, rich in bait resources, moderate in salinity and PH value, and with rocks or fine sand as the bottom material, the scallops produced here have the characteristics of thick meat, high protein content, bright color, fullness, high yield and rich nutrition.
The adductor muscle of Patinopecten yessoensis has high protein content and special composition, and is rich in unsaturated fatty acids EPA and DHA, which is an important shellfish aquatic product variety in recent years.
Patinopecten yessoensis grows in deep water with low water temperature, long growth cycle, rich dry matter accumulation, good taste and excellent quality. Patinopecten yessoensis has high nutritional value. According to the determination, every100g of fresh scallop contains protein 10- 12g, 0.4-0.8g of fat, 0.8-3.0g of carbohydrate130-1. 6-8 mg of iron, trace elements such as iodine, zinc, selenium, barium and manganese, and 18 amino acids such as VB 1, VB2, arginine, nicotinic acid and taurine (8 of which are essential amino acids that cannot be synthesized by human body), among which arginine content is also quite high.