Name: Kohama Island Diving Experience Tour
Brand: Kohama Island Tours
SKU: diving
Rating: 4.84 (180 reviews)

Encountering a large school of fish while diving

To the enchanting waters of Kohama Island!
Amazing and Inspiring Experience Diving Tours

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

Kohama Island is a small island with a circumference of about 16 km and is known as "Shihsi lagoon.Japan's largest coral reef areais spreading.

The extremely clear waters attract many divers, and even beginners are getting hooked on diving!

In this issue, we will introduce the appeal of diving and recommended tours to experience diving on Kohama Island. It is sure to be an unforgettable experience!

What is the attraction of diving to experience on Kohama Island?

The underwater world that can be seen only on Kohama Island!
Swim with colorful tropical fish and coral reefs

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

In the ocean around Kohama Island, you can enjoy diving in "Ishinishi Jagako," the largest coral reef area in Japan.

This vast coral reef zone stretches approximately 20 km east to west and 15 km north to south, and is covered with colorful blue, yellow, and red corals.

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

The coral reefs are home to a variety of creatures, including the fish familiar from "Finding Nemo," such as the "devilfish" and "clownfish. If you are lucky, you may even meet a sea turtle... ♪

Through the experience diving, you can feel the charm of the sea and the breath of life, and spend a luxurious time with tropical fish!

Beginners and those who are not good swimmers can also enjoy!

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

When you hear the word "diving", you may think it sounds difficult for first-timers... But, in fact, the participantsApprox. 80% or moreis your first time, so don't worry!

Before the tour, a detailed lecture is given on how to put on the wetsuit and practice breathing and ear removal.

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

Experience diving in Kohama Island is an attractive activity that even beginners can enjoy with ease!

Experience diving and feel weightless!

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

Diving offers a fluffy sensation similar to weightless spaceSpecial ExperiencesOh my god!!!

It is very attractive to see up close the tropical fish that inhabit along with the beautiful coral reefs while floating freely.

A new adventure in the sea awaits you, along with a feeling of weightlessness.

Monthly Diving Data for Kohama Island

Kohama Island Tours' Original Survey | 2025 Booking Results

Monthly booking data for diving on Kohama Island, compiled from 304 entries.
January: 9 cases; February: 8 cases; March: 15 cases; April: 23 cases; May: 25 cases; June: 34 cases; July: 42 cases; August: 53 cases (annual peak); 39 cases in September, 30 cases in October, 15 cases in November, 11 cases in December

Recommendation! Kohama Island Diving Tour

《《half dayBeginners are welcome!
1 Person OK★Experience Diving Tour

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

This is an experience diving tour that can be done by beginners or those without a license, departing from and arriving at Kohama Island.

Enjoy diving in the beautiful ocean of Kohama Island, which is covered with colorful corals!

Kohama Island/Half Day】Beginners welcome☆Experience diving tour with excellent transparency!開始時間8:40-11:40 / 13:30-16:30所要時間Approx. 3 hours15,000 yen

《《one dayIncludes landing on the island!
Snorkeling & Diving Experience

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

Snorkeling and Diving ExperienceExperience both.Luxury Plan! It's interesting to see the difference between snorkeling and diving♪

Let's take lots of pictures and play around on the spectacular "Phantom Island!

No. 605: Snorkeling & Diving at the Phantom Island

Kohama Island / 1 day】Only available from April to October! Experience diving, snorkeling, and landing on a phantom island! Boarding only is also available (No.605)開始時間8:40-16:30所要時間Approx. 6 hours20,000 yen

What to bring for Kohama Island Diving Tour

No need to bring anything *Swimsuit only
A complete set of diving equipment is available for rent!

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

The equipment necessary for diving is included in the fee, and as long as you have a bathing suit, you can basically participate without it.

howeverThe sun is strong.Therefore, it is recommended to bring sunscreen and wear a long-sleeved rash guard.

*Wetsuits required for winter can be rented.

↓ Click here to read the article in conjunction with ↓ ↓

Children Playing in the Sea off Kohama Island

Know Before You Travel! 10 essential items to bring on your trip to Kohama Island!Check before you go to Kohama Island. Let's prepare what you need in Ishigaki Island! Kohama Island is a major tourist destination that sometimes attracts over 1 million visitors a year, but the island is small with a population of only 700 as of 2020. There is only one store on the island, and the co [...].

Let's go to the popular spot "Phantom Island (Hamashima)!

Hamashima, a fantastic uninhabited island surrounded by the sea

Head to the Enchanting Seas of Kohama Island! A Diving Tour Full of Surprises and Thrills

On Kohama Island, there are plans that include not only diving but also other activities and sightseeing spots!

Please join our special tour and enjoy the charms of Kohama Island to the fullest!

◆If you want to enjoy diving in Ishigaki Island, click here.
⇒Ishigaki Island Diving Tour(Ishigaki Island Tours)

◆Iriomote Island for those who want to enjoy diving
⇒Iriomote Island Diving Tour(Iriomotejima Tours)

Frequently Asked Questions (FAQ) about Kohama Island Diving

Q. Can beginners and non-swimmers participate in diving on Kohama Island?

Since the diving experience is accompanied by an instructor, beginners and those who are not confident in their swimming skills can also participate. Breathing is done with special equipment, so swimming ability is not necessary, and prior training is provided so that you can enjoy the experience with peace of mind.

Q. Do you recommend diving from Ishigaki Island or from the local dive sites?

Since there are few stores on Kohama Island, tours departing from Ishigaki Island are the mainstream for diving. The number of points and sea conditions are high, and even if you stay on Kohama Island, you can participate efficiently by using a tour with pick-up and drop-off.

Q. When is the best season for diving at Kohama Island?

The best season is from April to October when the sea conditions are stable. Summer is especially popular due to its high transparency. In winter, the north winds can limit the number of dive sites, so it is recommended to check the sea conditions in advance.

Q. Can I see manta rays when diving in Kohama Island?

Manta ray encounters are mainly around Kabira on Ishigaki Island, and are not frequently seen around Kohama Island. However, some tours may go to the Ishigaki Island area to target manta points.

Q. How much does it cost and how long does it take to dive Kohama Island?

The price for a diving experience is around 12,000 to 18,000 yen per person, and the time required is usually from half a day to a full day.

Latest Reviews of the Kohama Island Diving Experience Tour

Kohama Island / 1 day】Only available from April to October! Experience diving, snorkeling, and landing on a phantom island! Boarding only is also available (No.605)

User_mitq / 30s Posted on: September 2026

If you want to make the most of your time on Kohama Island, I highly recommend this tour! After landing on the “phantom island” and taking some beautiful photos, you’re sure to be blown away by the colorful fish while diving and snorkeling♪ The guide will be there to offer friendly support, so even beginners can enjoy themselves with peace of mind! Be sure to give it a try on your next trip☆

Kohama Island/Half Day】Beginners welcome☆Experience diving tour with excellent transparency!

User_ngua / 50s Posted on: September 2026

The facilities are great. Since it’s a well-established business with over 30 years of history, the guide was very reassuring, and the introductory dive went off without a hitch. You can participate without bringing anything, which makes it easy to fit into your schedule. The water clarity is outstanding, making it an excellent recreational activity.

Kohama Island/One day】Request OK◎Let's enjoy the luxury of a private charter! Boat Charter Plan! Available for graduation trips, company trips, and groups☆(No.662)

User_rwhw / 50s Posted on: September 2026

We used this private boat charter service for our company trip. We were able to enjoy the beautiful waters around Kohama Island exclusively with our group without worrying about others, and it was a truly wonderful experience. We appreciate the high level of flexibility and how willingly they accommodated our requests. As the organizer, I’m completely satisfied with the outcome—if you’re on the fence, this is definitely a plan you should go for.

Kohama Island / 1 day】Only available from April to October! Experience diving, snorkeling, and landing on a phantom island! Boarding only is also available (No.605)

User_jkvr / 30s Posted on: September 2026

We used this service for a trip with my boyfriend, and it turned into the best memory ever. When the two of us set foot on the “phantom island,” we were so moved by its beauty that we took lots of photos of each other♪ Both the introductory diving and snorkeling were so much fun, and my boyfriend was all smiles the whole time. Surrounded by breathtaking scenery that felt like a world away from everyday life, it was a truly satisfying date.

Kohama Island/Half Day】Beginners welcome☆Experience diving tour with excellent transparency!

User_ypfy / 30s Posted on: September 2026

If you're thinking of trying diving on Kohama Island, I highly recommend this long-established shop! The water is incredibly clear, and you can see tons of colorful fish♪ The guides are really patient and helpful, so even beginners can feel at ease, and it was super convenient to just show up empty-handed! Be sure to give it a try on your next trip☆

Kohama Island/Half Day】Beginners welcome☆Experience diving tour with excellent transparency!

User_spzp / 40s Posted on: September 2026

I wasn’t confident in my physical stamina, and before we left, I was constantly worried about whether I’d be able to keep up with the dive until the very end. But thanks to the attentive support of the experienced guides—a hallmark of this long-established shop—even a beginner like me was able to manage just fine. I got to see fish in the crystal-clear ocean, and I’m so glad I took the plunge and joined the tour. It completely blew away my everyday stress.