As the biggest seaport in Korea, Busan has an abundance of seafood. Seriously, if you like your fish then Busan will likely be a playground for yourself, each and every couple metres can be a seafood cafe with significant tanks bursting with species like Crab, Hagfish and Flounder. Look at https://johnathanuemvb.shotblogs.com/getting-my-summer-holiday-haeundae-to-work-50680394