Hwanguji Seonnyeotang is a natural seawater pool enclosed by rocks on the coast next to Oedolgae in Seogwipo. In the clear blue water, people snorkel and swim while looking at fish and sea urchins. It is reached by walking down stairs from the Oedolgae parking lot, and renting a life jacket includes free use of the shower room. The shower facilities are simple, enough to rinse off seawater.