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海底遺跡

Unexplored ancient heritage is on Yonaguni Island!
Yonaguni Island "Undersea Ruins Tour" for an adventurous trip

海底遺跡ツアー

The "underwater ruins" lying in the waters of Yonaguni Island were discovered by local divers about 40 years ago.

Although some of the landforms resemble structures, such as staircases, it is difficult to say whether they are human-made ruins or natural formations...The mystery of the underwater ruins isun-It has not been elucidated.The following is a list of the most common problems with the "C" in the "C" column.

For those who...
◆Love exciting adventures
◆An interest in history and archaeology
◆Love diving and marine life
◆Those who are looking for sightseeing spots in Yonaguni Island.
◆ Planning a trip to Okinawa in winter

In this issue, we will introduce the attractions and recommended underwater ruins tours to experience on Yonaguni Island!

What is the attraction of the Yonaguni Island Underwater Ruins Tour?

(1) Easy to go on a day trip!

海底遺跡ツアー魅力とは?

The underwater ruins of Yonaguni Island are located just 100 m offshore from the headland of the Shinkawabana breakwater.

It is one of the few underwater ruins in the country, though,Accessible by boat in about 20 minutes.I'm glad to hear that... ♪

 

(2) Feel the history up close and personal.

海底遺跡ツアー魅力とは?

Diving to enjoy the underwater ruins up close isNo special permits requiredand can be enjoyed by anyone.

What the ruins looked like at the time and what history they have traced... You can actually touch them, see them with your own eyes, and feel the history.

 

(3) Underwater ruins can be enjoyed all year round.

海底遺跡ツアー魅力とは?

The sea of Yonaguni Island is influenced by the Kuroshio Current, and the charm of the four seasons spreads out.

From spring to summer, you can enjoy migratory fish such as dogtooth tuna and bigeye jacks, as well as bear clams!

海底遺跡ツアー魅力とは?

We also recommend the special winter season unique to Yonaguni Island. During this season,hammerhead sharkand more can be observed, making it a valuable experience for diving enthusiasts!

What are the underwater ruins lying in the sea of Yonaguni?

Located roughly halfway between Ishigaki Island and Taiwan, the underwater ruins are in the sea of Yonaguni, the westernmost island of Japan.

与那国の海に眠る海底遺跡とは?

Its true identity is a monolith about 100 meters long, 60 meters wide, and 25 meters high, on the seafloor just 100 meters offshore from the headland of the Shinkawabana breakwater.

与那国の海に眠る海底遺跡とは?

Since its discovery in 1986, many divers have dived into the sea to catch a glimpse of this mysterious underwater ruin.

Points of interest to be seen at the underwater ruins
◆Gusuku Gate
Entrance to the underwater ruins. The entrance is very narrow and one person can barely pass through.

◆Nimaiiwa
Two large rocks can be seen beyond the castle gate. The tops of the rocks are shallow and the two large rocks side by side have a mysterious atmosphere as to how they were created.

◆Main Terrace
It is composed of a series of vertical rocks cut at right angles and flat rocks piled on top of each other. On the far right side of the terrace, there is a staircase that is too large for a person to ascend, leading some to believe that a giant may have been there.

◆Palace of Light
This is a topographic point with many intricate holes. The beautiful light shining through the holes and the bright blue ocean beyond are a must-see.

Activities to enjoy Yonaguni Island Underwater Ruins

(1) Diving

海底遺跡ツアーができるアクティビティ

Yonaguni Island is a sacred place for diving. Due to the deep average depth of the water and the fast currents, boat dives are almost always the norm.

To go to popular points on Yonaguni Island, you need to have intermediate or higher skills, but the "Undersea Ruins",Some points are enjoyable for beginners and experience divers.Therefore, even those who are not confident in their skills can enjoy diving.

 

(2) Glass board

海底遺跡ツアーができるアクティビティ

The semi-submersible sightseeing boats allow visitors to reach the underwater ruins in about 20 minutes by boat, and even those who cannot swim can enjoy the experience without getting wet, which is an attraction that everyone can enjoy.

From the ship's windows, visitors can enjoy underwater ruins and a natural aquarium of sea life.We hope you will take many pictures and keep them for your memories.

 

Snorkeling

海底遺跡ツアーができるアクティビティ

Snorkeling is an activity that can be enjoyed more easily than experience diving.

Instead of diving to see them, you can view the entire underwater ruins from the surface. We recommend the plan that comes with a complete set of necessary equipment for rent!

Recommended Underwater Ruins Tour in Yonaguni Island

*Preparing*.

Creatures you can meet around the underwater ruins of Yonaguni Island

1) Hammerhead sharks

海底遺跡周辺で出会える生き物

On the dive off Irizaki, the island's westernmost cape,hammerhead shark(red hammerhead shark) with a high probability of encounter.

If the tide is favorable, you may enjoy the sight of the "Hammer River," which flows like a river, passing right in front of you!

 

(2) marlin

海底遺跡周辺で出会える生き物

The swordfish, a large, fast-migrating fish with a sword-like long upper jaw "rostrum".

Marlin fishing is also very active on Yonaguni Island, so much so that the "Japan's Westernmost Yonaguni Island International Marlin Fishing Competition" is held every year in July. It would be a very lucky experience if you could encounter a school of big fish!

 

(iii) Migratory fish

海底遺跡周辺で出会える生き物

The sea of Yonaguni Island becomes remarkably clear in summer. Large migratory fish appear one after another, and you will be able to enjoy the gorgeous sea.

Examples of fish you can encounter
◆ Barracuda
dogtooth tuna (Gymnosarda unicolor)
◆ ◆
◆ Gennin trevally
pyramid butterflyfish (Hemitaurichthys polylepis)
grey bannerfish (Heniochus varius)

 

four-banded napoleonfish (Napoleon wrasse, Labroides phthirophagus)

海底遺跡周辺で出会える生き物

Napoleon fish, which are rarely seen, can be found lurking in the shadows of rocks in the waters of Yonaguni Island.

Its high transparency makes its green body stand out and shine, making it a valuable observation.

 

(5) Macro system

海底遺跡周辺で出会える生き物

Yonaguni Island is a macro paradise where you can dive at a relatively leisurely pace in summer and where small fish are abundant!

Discover the creatures hidden in the unique terrain and enjoy the fascination of the underwater world.

Examples of fish you can encounter
grey-headed dwarfgoby
◆Ao mask

grey stingfish (Minous monodactylus)
Kuwadagongbe
grey-barred pygmy-goby
yellow cave goby (Trimma taylori, species found in Indo-Pacific waters)

Sightseeing spots around the underwater ruins of Yonaguni Island

(1) Dr. Koto Clinic (Shikinajima Clinic)

海底遺跡周辺の観光スポット

Yonaguni Island, known as a location for popular TV dramasThe museum is located in the heart of the city. Visitors can tour the set that was actually used as the setting for the drama.

At the clinic, the waiting room and hospitalization room remain exactly as they were during the filming of the drama. Visitors can also take commemorative photos in white coats and enjoy the atmosphere of the drama.

Details of Dr. Koto Clinic
Address: 3027-1, Yonaguni, Yonaguni Town, Yaeyama-gun, Okinawa 907-1801
Access: 10 minutes by car from Yonaguni Airport

 

(2) South Ranch

海底遺跡周辺の観光スポット

Minami Ranch, made famous by the TV drama "Dr. Koto Clinic," is located in the southern part of Yonaguni Island.

Passing through the Texas Gate (a ditch-like structure), you will find a vast ranching area where horses graze. The horses roam freely, so please exercise caution and enjoy your visit safely.

Details of Minami Ranch
Address: Yonaguni, Yonaguni Town, Yaeyama-gun, Okinawa 907-1801
Access: 15 minutes by car from Yonaguni Airport

 

(iii) Ayamiha Bldg.

海底遺跡周辺の観光スポット

The Ayamihabirukan is a sightseeing spot where you can learn about the ecology of the world's largest moth, the Yonaguni Sun, which lives in the Yaeyama Islands.

Inside the museum, you can learn about the relationship between the Yonaguni San and life on the island, as well as other Yonaguni creatures. You will be amazed at the size of the adult specimens!

Details of Ayamiha Building Building
Address: 2114 Yonaguni, Yonaguni Town, Yaeyama-gun, Okinawa 907-1801
Access: 5 minutes by car from Yonaguni Airport


 

(4)-4 riverside beach

海底遺跡周辺の観光スポット

Higawa Beach is located in the southern part of Yonaguni Island and is a beautiful beach facing Higawa village, the smallest village on the island.

The beach stretches out in the shape of a crescent moon, and the surroundings are tropical, quiet, and peaceful. The shallow waters make it a popular spot for swimming and snorkeling, but care should be taken because of the fast currents.

white sandy beachDetails of
Address: Yonaguni, Yonaguni Town, Yaeyama-gun, Okinawa 907-1801
Access: 10 minutes by car from Yonaguni Airport

 

(5) Standing God Rock

海底遺跡周辺の観光スポット

Tategami Iwa, a vertical rock towering over the southeastern coast of Yonaguni Island, is a symbol of the island.

Legend has it that a young man who went to retrieve the eggs of a seabird climbed a rock and was unable to climb down, prayed to God, fell asleep, and when he awoke, he was safely back on earth.

海底遺跡周辺の観光スポット

The best place to take pictures is the Tategami Iwa Observatory. This observatory is located about 400 m northeast of Tategami Rock and offers a beautiful view.

Details of Tategami Rock
Address: 907-1801
Yonaguni, Yonaguni Town, Yaeyama County, Okinawa Prefecture
Access: 15 minutes by car from Yonaguni Airport

What to wear and bring for the Yonaguni Island Underwater Ruins Tour

海底遺跡ツアーの服装・持ち物

Underwater ruins can be seen all year round, but the best time to visit is from December to May.

Since the underwater ruins are located on the south side of the island, a northerly wind is more likely to bring you to the point.

Recommended Clothing & Personal Belongings
<For those who observe from underwater
◆Swimsuit or clothing that can get wet
◆Towel

<For those who observe from the ship
◆Sun protection (hats and sunglasses)
◆Cameras
◆Long sleeve

The main subjects of Yonaguni are the terrain and the schools. If you are a camera/video person, you can enjoy shooting more if you have a wide lens!

海底遺跡ツアーの服装・持ち物

During the winter months when the water temperature is cooler, a rash guard can be worn under the wetsuit to keep you even warmer and make it easier to put on and take off.

Frequently asked questions about Yonaguni Island Underwater Ruins Tour

Q. What is the difference between the two?When should I visit the Yonaguni Island Underwater Ruins?

Underwater ruins can be enjoyed year-round, but the unique "underwater ruins" and "hammerhead sharks" of Yonaguni Island are especially recommended during the winter months.

Around December through February, large schools of more than 100 whale sharks can be encountered, and the probability of whale sharks appearing also increases. If you visit Yonaguni Island during this period, you can enjoy the unique charm of winter to the fullest.

Q. What is the difference between the two?When is the best time to dive at Yonaguni Underwater Ruins?

The underwater ruins are located on the south side of Yonaguni Island, and the best time to dive is during the winter when the northerly winds blow easily. The best time to dive is from November to May.

Conversely, from summer to fall, winds tend to blow from the south, so the area around the underwater ruins, located on the south side of the island, is generally not suitable for diving.

However, if the wind is relatively light, diving is possible even in summer and autumn. It is important to pay attention to the wind direction and season when planning your diving trip.

Q. What is the true nature of the Yonaguni Underwater Ruins?

This mysterious spot, which stretches across the ocean floor of Yonaguni Island, was discovered by divers in 1986. It is a huge monolith stretching approximately 250 meters from east to west and 150 meters from north to south.

How this huge rock was formed and what historical background it has is still a mystery.

Q. What is the difference between the two?What is the depth of the underwater ruins on Yonaguni Island?

Depths below 20 m deep deepen rapidly at a slope angle of 13°, extending to a depth of 300 m. The submarine site is located south of Shinkawa-no-hana. The submarine site is located south of Shinkawa-nana and extends over a flat area at a depth of 20m.

This topography characterizes the underwater ruins and makes it an interesting spot for divers.

Q. What is the difference between the two?How to get to Yonaguni Island?

To get to Yonaguni Island, first fly to Ishigakijima Airport on Ishigaki Island, Okinawa.

You will then take a RAC (Ryukyu Air Commuter Corporation) propeller plane from Ishigaki Airport to Yonaguni Airport. This flight takes about 30 minutes to arrive at Yonaguni Airport. You can enjoy the beautiful nature and sightseeing spots of Yonaguni Island by air or ferry.

For advance or same-day reservations, please contact Yonaguni Island Tours!

前日・当日予約は与那国島ツアーズで!

Yonaguni Island Tours accepts reservations for snorkeling tours on the day before or the day of the tour.

We may be able to accommodate you even just before the tour starts!

Contact us

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