The oyster culture area of Haima Village is located in the deep sea. It takes about 1 hour to sail from Zhuanghe River on land and about half an hour to sail from Wangjiadao at sea. The culture area is located at 39 degrees north latitude, and its temperature and salinity are lower than those in other sea areas. For example, the salinity of other sea areas is about 30%, and the salinity here is between 26% and 28%, which is an excellent "comfort zone" for oyster culture.
The sea area of Zhuanghe River in Dalian stretches for128,000 mu, and oysters cultured in cages are soaked in a "cold water bath" of 3 meters to 13 meters all the year round, and it takes at least two years to go out to sea. On the sea, there is a buoy platform to monitor the sea area for 24 hours.
After two years of cultivation, the fatness of oysters exceeded 18% (the proportion of oyster meat to the total mass). As long as the sea breeze is lower than level 6, fishing boats usually go out to sea at 4 am and catch 700- 1000 cranes, each weighing about 70 kg. As can be seen from the fishing boat, as long as a crane is turned on, you can take out an oyster at will, weighing more than half a catty.
Selection method of raw oysters:
1. Are the seams of oysters tight?
When buying oysters, we should first look at the integrity of oyster shells, and then we need to further confirm whether the seams of oyster shells are tight. If the seams of oysters are tight, it means that these oysters are fresh. If you can simply open the oysters or open them by hand, it means that these oysters are not fresh, so it is recommended to buy less.
2. The shell of oyster is deep enough or thick enough.
From the outside, the shell of an oyster is thicker, which means that the meat inside the oyster is fatter. Therefore, when buying oysters, don't choose oysters with shallow shells, which generally means that there is less meat inside.
3. Knock on the oyster and listen to the sound
When buying oysters, we can pick two oysters, knock them with our hands and listen to the sounds inside. If the sound inside the oyster shell is hollow, it means that the meat inside the oyster has been dehydrated and stale. However, when purchasing oysters, the general aquatic product dealers choose oysters in this way.
Reference to the above content: China Food Network-Haihe Macun realizes the fine management of oysters.