There are no less than 5 varieties of prawns in Qingdao, including wild and farmed ones, all of which are marine shrimps. Therefore, it is not said that a species is called Qingdao prawn. These shrimps are not unique to Qingdao, they are just landed through Qingdao port. If he wants to say that Qingdao prawns are prawns shipped from Qingdao, then he is actually selling them from Yantai. But since you are shopping online, you should be clear about the species of shrimp and don’t believe anything claiming to be Qingdao prawns. Because Qingdao prawn is not the name of a shrimp species.
A lot of seafood in Qingdao is from the south, transported to Qingdao, and then shipped from Qingdao. This is actually a bit similar to Wuchang rice Yangcheng Lake crab, and the local production in Qingdao is not large. In northern cities, the water is cold and there is not so much food to eat. The same wild seafood grows small and slow. The quality of seafood is far inferior to that of southern seafood.
Seafood is not suitable for long-distance transportation. The further the distance, the worse the freshness. If you can be near the buyer, don't buy from far away. When you buy seafood from Qingdao, it tastes different from what you eat in Qingdao. Freshness is different.
When we locals in Qingdao eat seafood, we always go early in the morning to buy the seafood that is landed on the same day. Because we buy it in the evening and have left it on the market for a day, the taste will be different. You must not waste time when eating seafood.
Even vendors know that seafood that cannot be sold within one day will basically go bad the next day and cannot be sold.