There is no bathing beach near Laohutan in Dalian, but there is a seaside where you can see the sea. If you want to swim in the sea, you should walk a few kilometers west along Binhai Road to Fujiazhuang Park, where there is a bathing beach. A few kilometers to the west, there are Xinghai Square and Xinghai Park, where there are also bathing beaches.
The seafood market is bigger, that is, there is a seafood market on the ground floor of Friendship Meilin Shopping Plaza near Jiefang Road Taoyuan, and the scale is ok. If you live, it is more convenient between Tiger Beach and this market. Look at Baidu map.