Beihai, located in Guangxi Zhuang Autonomous Region, China, is a famous seafood city. In Beihai, you can find many seafood markets and restaurants, offering all kinds of delicious seafood. The following are some popular seafood markets and restaurants:

1. Beihai International Seafood Market: Located on Haibin Avenue in Beihai, it is one of the largest seafood markets in Beihai. All kinds of fresh seafood are provided here, such as lobster, crab, scallop, sea cucumber and so on. You can buy seafood here and then go to a nearby restaurant for processing and tasting.

2. Beibu Gulf Plaza: Located at the intersection of Binhai Avenue and Binhai Avenue in Beihai City, it is a large commercial plaza integrating shopping, dining and entertainment. The seafood restaurant here offers all kinds of delicious seafood, which is worth a try.

3. Yintan Seafood Plaza: Located in Yintan Tourist Resort in Beihai City, it is a special seafood plaza. There are all kinds of fresh seafood here. You can buy seafood here and then go to a nearby restaurant for processing and tasting.

4. South Zhuhai Restaurant: Located on the south side of Haibin Avenue in Beihai, it is a famous seafood restaurant. All kinds of delicious seafood are served here, especially their signature dish-spicy crab, which is very popular.

To sum up, there are many delicious seafood markets and restaurants in Beihai. You can choose according to your taste and preference. However, it should be noted that the price of seafood varies with seasons and places of origin. It is recommended that you know the price and taste information before tasting.