As the largest seaport in Korea, Busan has an abundance of seafood. Critically, if you prefer your fish then Busan might be a playground for you, every single few metres is actually a seafood restaurant with large tanks bursting with species like Crab, Hagfish and Flounder. Take a look at https://caidenjxj2q.uzblog.net/summer-holiday-haeundae-for-dummies-50328619