As the biggest seaport in Korea, Busan has an abundance of seafood. Seriously, if you like your fish then Busan will probably be a playground for you, each few metres is usually a seafood cafe with big tanks bursting with species like Crab, Hagfish and Flounder. Take a look at https://dalton1075c.blogs-service.com/61949534/the-best-side-of-busan-haeundae-roomsaloon-guide