|Monument to the nine dragons|
Last April I went out to a little town near Pohang called Guryongpo (구룡포). If you look at a map of South Korea, you can see a little bit on the southeast coast that sticks out, kind of like a little thumb. The very point of that is Homigot, one of the easternmost points of the coastline, where thousands of people gather every year on New Years to watch the sunrise (presumably while trying not to get hypothermia.)
Just south of Homigot is Guryongpo, a little fishing village. There are a few beaches around there that are nice in a rugged way (or at least they seemed rugged on a rainy day in April) and of course plenty of restaurants serving fresh seafood. While I've never been in the summer, Guryongpo is supposed to have some of the nicest beaches in the summer for swimming.
According to an official Korean tourism site, Guryongpo gets its name from a mythical event that occured during the Silla Period, under the reign of King Jin-heung (540-576 CE.) The story says that a large storm brought nine dragons into heaven (where those dragons were prior to the storm is anyone's guess.) Thus the etymology of Guryongpo (gu = 9, ryong = dragon, po = beach.)