Submarine tours
Located in the harbour, you have the opportunity to experience going down to a depth of 40m below the water surface on a submarine trip. with a course around 2.8 km long, a tour is a great way to see below the surface of jeju's splendid seas. here you can see the world of soft corals and colorful fish all amid a fantastic underwater landscape near munsom islet. you may even be lucky enough to see haenyo hard at work. an hour trip costs 45,000 for adults, and 25,000 for children.
Jeju Water World
21,000 for water park admission (8,000 for sauna, 10,000 for jjimjilbang)
Take the local or intercity bus to the World Cup Stadium and walk around to the south side. It's in the mouth of the giant, green-lit shark.
Family-friendly water park consisting of a large indoor section quite literally under the south grandstands and a small outdoor section off to the side. Has a sauna and jjimjilbang attached.
Some scuba diving centers near to Seogwipo.