The first thing I have to mention is "Daxin Seafood Restaurant". The spicy crayfish here is very special. In addition to spicy and delicious, the granules are full and the price is relatively close to the people. So both locals and tourists will come here to try it.
Secondly, I recommend "lobster barrel fast food chain store". Although this store is only a small chain store, it definitely tastes like a big restaurant. Moreover, the lobster barrels here are very distinctive, not only delicious, but also garlic barbecue and hot delicious eggs to choose from.
Finally, I want to mention the "Marine Lobster City". Here, you can taste luxurious and large quantities of spicy crayfish, and the price will not make you feel bad. Not only that, the lobster here has a variety of flavors to choose from, including spicy and mashed garlic. You must try it when you come.
In a word, Dalian is a city full of delicious food, especially spicy crayfish, each with its own characteristics. I hope you can refer to the recommendations above and find your own delicious place.