Really, this is a photo of the 'No Swimming' sign, not the girl in the bikini at the bottom of the pic.
In my opinion, the surf has eased a little but swimming is still forbidden at all beaches in Sokcho.
Man, I want to swim in the surf - flat water is boring. I would normally say that people can judge the conditions for themselves and decide if they should swim or not. However, I have pulled several people in tubes to shore after they found themselves unable to return under their own power.
Oh, the flag says, "Su-young Bool-ga" which means 'No swimming'.