As the largest seaport in Korea, Busan has an abundance of seafood. Significantly, if you like your fish then Busan will be a playground for yourself, each few metres is a seafood cafe with significant tanks bursting with species like Crab, Hagfish and Flounder. Look at my seafood cafe advice https://simon1rdox.blogoscience.com/43112191/the-definitive-guide-to-summer-holiday-haeundae