Jeju Province dive sites
South Korea · Browse dive locations by depth, type and conditions.
Best Season
July-October, June-November, June to October, September-November, May to October
Skill Levels
all-levels, intermediate, advanced
Nearby Cities
Seogwipo, Seongsan
All dive sites
Jeju - Udo Island
Seongsan · Jeju Province · South Korea
A picturesque coral island off Jeju's eastern coast with volcanic reef walls, haenyeo free-diving culture, and colourful soft corals in sheltered waters.
Jeju Island - Seogwipo
Seogwipo · Jeju Province · South Korea
South Korea's premier subtropical dive destination where volcanic rock walls draped in vivid soft corals meet temperate and tropical marine life.
Jungmun Saekdal Beach
Seogwipo · Jeju Province · South Korea
A volcanic rock reef off Jeju Island's southern coast where subtropical and temperate species overlap amid dramatic basalt formations, offering excellent macro diving and seasonal soft coral blooms.
Marado Island
Seogwipo · Jeju Province · South Korea
South Korea's southernmost island offers exposed oceanic diving over volcanic rock formations where the warm Tsushima Current brings tropical fish species alongside temperate kelp forests and large pelagic visitors.
Munseom Island
Seogwipo · Jeju Province · South Korea
Jeju's iconic volcanic islet where towering soft coral walls plunge into the blue and two shipwrecks add adventure for experienced divers.
Seogwipo Submarine Volcano
Seogwipo · Jeju Province · South Korea
A submerged volcanic cone rising from the seabed off Seogwipo, where basalt columns and lava tubes host dense kelp forests, soft coral gardens, and seasonal aggregations of striped beakfish in one of South Korea's most dramatic underwater landscapes.
Diving in Jeju Province
Jeju Province offers reef dive sites across 2 locations. Browse dive locations by depth, type and conditions before planning your dive.
FAQ
How do I get to Udo Island for diving?
Udo Island is reached by a 15-minute ferry from Seongsan port on Jeju's eastern coast. Ferries run frequently throughout the day. Most divers either bring their own gear or arrange dives through Jeju-based dive operators who include Udo in their itineraries. The island is small enough to explore by electric scooter or bicycle between dives, and there are several restaurants and cafes for surface intervals.
What marine life can I expect at Udo Island?
Udo's marine life reflects Jeju's temperate-subtropical character. The volcanic reef walls support colourful soft corals and host octopus, sea bream, damselfish, and butterflyfish. The waters are also home to abalone, sea cucumber, and sea urchin, which are the traditional harvest of the haenyeo free-diving women. Nudibranchs are a highlight for macro photographers. The marine life is less dramatic than deeper Munseom sites but the sheltered conditions make for relaxed, enjoyable diving.
Is Udo Island diving suitable for beginners?
Yes, Udo Island is excellent for beginners. The maximum depth at most dive sites is around 13 to 18 metres, currents are generally mild due to the island's sheltered eastern position, and the volcanic reef provides interesting topography at shallow depths. The site works well as an introduction to temperate water diving before progressing to the more challenging sites around Munseom and Beomseom on Jeju's southern coast.
What makes Seogwipo diving unique compared to tropical destinations?
Seogwipo sits at a biogeographic crossroads where the warm Tsushima Current meets cooler Korean waters. This creates an unusual blending of subtropical and temperate species not found in purely tropical destinations. The volcanic substrate provides a dramatically different underwater landscape compared to typical coral reefs: black basalt walls, caves, and arches are draped in vibrant soft corals in colours rarely seen in warmer waters. The result is an underwater aesthetic that is uniquely Korean.
Who are the haenyeo and can I see them while diving?
The haenyeo are Jeju's legendary free-diving women who have harvested abalone, sea urchins, and other seafood from the ocean without scuba equipment for centuries. Recognised by UNESCO as an Intangible Cultural Heritage, they can still be seen working in the waters around Seogwipo, typically in shallower areas separate from scuba dive sites. Many dive operators include cultural briefings about the haenyeo tradition, and you may see them from the dive boat.