Udo Submarine

The Udo Submarine tour allows visitors to observe a variety of marine life up close, such as colourful coral reefs and schools of fish. The submarine is equipped with large viewing windows, ensuring every passenger can clearly observe the underwater scenery. With a safe and comfortable environment suitable for visitors of all ages, it is a surprising underwater adventure.

Highlight 1: Filming location for the super popular Korean variety show "The Return of Superman" and the TV dramas "The Mermaid Princess" and "Time Slip".

Highlight 2: The 100‑tonne Yonggung No. 48 and No. 49 submarines will escort your safety throughout the journey.

Highlight 3: Descend to a depth of 30 metres underwater and experience the unique underwater scenery of Udo Island!

With its safety, comfort and mysterious underwater world, the Udo Submarine adds an unforgettable highlight to your Jeju trip. Whether you are a family with children, a couple on a getaway, or a nature‑loving traveller, you will find surprises and touching moments here. How can you miss such a unique underwater adventure on your Jeju Island trip?

You can see Seongsan Ilchulbong Peak, designated as a UNESCO World Natural Heritage site and one of the New 7 Wonders of Nature, at a glance. Take the sightseeing route to enjoy the sea views and Seongsan Ilchulbong Peak, and head to the submarine boarding point at Seongsanpo Port.

This is the longest underwater journey in Korea — a 500m underwater experience that lets you encounter the beautiful underwater world that you cannot see on land!!

The Udo Submarine offers the longest underwater route in Korea (500m), welcoming visitors at 30m below the water surface.

Udo [Opening Hours] and Usage

Winter: Every day 9:00 AM – 5:00 PM

*Last boarding time: 3:00 PM

Summer: Every day 9:00 AM – 6:00 PM

Udo Submarine

Three Key Advantages of the Udo Submarine

– High underwater visibility, great for taking photos.
– Moderate visitor numbers, making for a more comfortable ride.
– Convenient connections to other attractions on the island, offering flexible scheduling.

The Udo Submarine runs six sessions every day:

09:45, 10:30, 11:15, 13:30, 14:15, 15:00, each lasting about 40 minutes. 

We recommend arriving at the boarding point at least 20 minutes early to ensure a smooth boarding.

Practical Travel Tips

– Motion sickness: The submarine itself is stable, but you may take motion sickness medication before boarding.
– Clothing advice: The air conditioning inside the submarine is quite strong, so we recommend bringing a light jacket.

– Accessibility: Passengers with mobility difficulties may consult the operator in advance.

Weather Considerations

Adverse weather conditions may lead to trip cancellation, and the organiser usually offers a full refund or rescheduling service. Please keep an eye on the weather forecast and confirm arrangements with the operator.