As the biggest seaport in Korea, Busan has an abundance of seafood. Severely, if you want your fish then Busan will be a playground for you, each handful of metres is actually a seafood restaurant with huge tanks bursting with species like Crab, Hagfish and Flounder. Have a look at https://zionwoz9h.blogtov.com/17203516/summer-holiday-haeundae-secrets