As the most important seaport in Korea, Busan has an abundance of seafood. Very seriously, if you want your fish then Busan are going to be a playground for you, every few metres is really a seafood restaurant with large tanks bursting with species like Crab, Hagfish and Flounder. Check https://judah6erbl.dreamyblogs.com/37116023/getting-my-summer-holiday-haeundae-to-work