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Kabira Glass-Bottom Boat – Large, Stable & Easy to Book

4.50· 119 reviews

Highlights

A specially designed boat by the owner – stable ride with large viewing windows
Free parking available for tour participants only
View tropical fish and coral at a hidden spot in Michelin 3-Star-rated Kabira Bay
This tour takes you to exclusive spots only we offer.

What to expect

Enjoy a glass-bottom boat tour in Kabira Bay — one of Ishigaki’s most scenic spots!
Our stable, custom-designed boat is perfect for families and those prone to seasickness.
Stay dry while exploring the underwater world.Book now!

What's included

Cruise fee

About this experience

Starting at: 09:00–17:00 (every 20 min)

Schedule

Check-in for the boat ride is available at Marin House Gurukun Headquarters.
Departure
Enjoy a smooth and stable ride with our highly reliable boat — no need to worry about seasickness! The large glass panels offer a clear view of the sea floor and marine life, making your experience even more enjoyable.
Glass-Bottom Boat Tour
Depending on the weather, tide conditions, and time of day, the captain will guide you to the best spots — whether it's vibrant coral reefs or areas where colorful fish gather.
During the tour...
The sound of the boat attracts fish, so you may see them gather around! You might even spot giant clams or clownfish — the real-life "Nemo"!
The tour ends at Marin House Gurukun.

Location and Directions

Check-in / Check-out
Marin House Gurukun Headquarters
926-5 Kabira, Ishigaki City, Okinawa 907-0453, Japan
Reception is available at the following two locations:

■ Marin House Gurukun Headquarters
926-5 Kabira, Ishigaki City, Okinawa 907-0453, Japan
(For marine activity check-ins [individuals], and general affairs/accounting)

■ Marin House Gurukun Kabira Park Branch
911 Kabira, Ishigaki City, Okinawa 907-0453, Japan
(Located inside the Ishigaki Island Specialty Shop)
(For individual and group check-ins/reservations)

※ It takes approximately 5 minutes on foot between the Headquarters and the Kabira Park Branch.
Parking information
Guests joining the glass-bottom boat tour are welcome to use the free parking lot located at the Marin House Gurukun Headquarters.

Please note the following:

Both free and paid parking lots are available in the area. Please make sure to park in the designated free parking area.

The paid parking lot is a public facility. If you choose to use it, the parking fee will be at your own expense.

Even if you are participating in one of our tours, we are unable to cover the cost of paid public parking. We appreciate your understanding.

Operated by

Marine House GURUKUN (Code:196727)

Cancellation policy

0-1 business day before (by 3:00 PM local time): 30%
Within 1 hours of start (local time): 100%
On the activity day / No-show: 50%

Reviews

4.50

119 reviews

576

434

Guest photos 136

You can see various fish.

Posted Date: 2026/07/11

ゆず

It was fun to see fish and corals at multiple points! Since the person driving the boat provided explanations, I was able to understand better.複数のポイントで魚やサンゴが観れて楽しかったです♪
船を運転する人が解説しながらなので、より理解できました

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Kawahirabay Glass Boat

Posted Date: 2026/07/11

うに

I went in mid-June! It was incredibly hot!!! There is no air conditioning inside the boat, so I think drinking water and towels are essential! If you're prone to seasickness, it might be a good idea to have some motion sickness medication as well. The 30-minute course was great, and even on a cloudy day, the views were beautiful! My one-year-old daughter was very curious about all the fish and sea creatures! I want to go again.6月半ばに行かせてもらいました！
とにかく暑い！！！
ボート内は冷房がないので、飲料水とタオルは必須かと思います！
船に弱い方は酔い止めもあったほうが良いかもしれません。
30分のコースですが、曇りの日でも綺麗に見えて最高でした！1歳の娘もたくさんのお魚や海の生き物に興味津々でした！また行きたいです。

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Huge coral

Posted Date: 2026/07/03

ふんちゃん

We were able to board before our reserved time because we arrived early. I was surprised by the large coral and was very satisfied to see so many cute turtles! 🫢早目に到着したため予約時間前に乗船させていただけました
大きな花珊瑚にびっくり🫢かわいい亀にもたくさん会えて満足でした

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I saw sea turtles too!

Posted Date: 2026/05/30

Bilbao

If you come to Ishigaki Island, you definitely want to experience the glass-bottom boat. I arrived at the reception earlier than my reservation time, but they kindly changed me to an earlier departure without any waiting time. We efficiently visited all the highlight spots, from the shallow areas to the offshore table corals, and the 30 minutes flew by with enjoyable explanations. I was lucky to see two sea turtles as well.石垣島に来たらぜひ体験したいグラスボート。予約より早い時間に受付に着いてしまいましたが、前の時間の便に変えていただき待ち時間なく乗ることができました。浅瀬から沖のテーブルサンゴまで見どころスポットを効率よく回ってくれ、楽しい説明で30分があっという間でした。ウミガメも2匹見られてラッキーでした。

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The best

Posted Date: 2026/05/22

やまさん

Wow, it was amazing. I think it's a must-visit when you go to Ishigaki Island. The boarding time was irregular, so I boarded just 10 minutes after checking in. As someone who was traveling by bus, it was the best experience.いやー、最高でした。石垣島に行ったら1度は行くべきだと思います。運航時間が不定期だったので受付後１０分で乗船でした。バスで行動していた身分としては最高でした。

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It was fun.

Posted Date: 2026/05/05

ばばちゃん

Unfortunately, the weather was not great, but the water was beautiful. We were able to stop at a point, and the staff member explained things to us. We got to see various things. However, since I was seated at the back on the first ride, I could hardly hear the staff member's explanations. The smell of gasoline was quite strong, so wearing a mask is necessary.

What I was dissatisfied with was that I arrived earlier than my reservation time, and I wasn't sure how to check in. They said that those … Unfortunately, the weather was not great, but the water was beautiful. We were able to stop at a point, and the staff member explained things to us. We got to see various things. However, since I was seated at the back on the first ride, I could hardly hear the staff member's explanations. The smell of gasoline was quite strong, so wearing a mask is necessary.

What I was dissatisfied with was that I arrived earlier than my reservation time, and I wasn't sure how to check in. They said that those with reservations could go first, but the staff member didn't say anything and just told us to line up there because it wasn't time yet. I was confused about where to stand since there were so many people in line, and I couldn't tell which line was for what.

I was unsure where to line up, so I asked, "Should I stand at the very back?" and they said, "Okay, I'll check you in next, so please wait." Then, when I was checked in, I was given an earlier time. I didn't even ask for an earlier time, and the ticket seller's response was quite unpleasant. They were lacking in communication. I understand they might be busy, but I wish they would listen to each person's words properly. Their attitude was definitely not very friendly either. あいにくの天気でしたが
海の中は綺麗で、ポイントに止まってもらえて、お兄さんが説明してくれていました。
色々と見ることができました。
ただ、最初に乗って奥の端の席だったので
お兄さんの説明がほぼ聞こえない。
ガソリンの匂いがすごくてマスクは必要ですね。
不満だったのは、予約時間よりも早く着いて
受付の仕方が良くわからなかったのですが
予約有りの方は先にどうぞ、だったのですが
受付の方は何も言わずに、時間がまだなのでそこに並んでくださいと言われ、そこ？
沢山のひとが並んでどこが何の列がかわからない。
と思いながら並ぶ場… あいにくの天気でしたが
海の中は綺麗で、ポイントに止まってもらえて、お兄さんが説明してくれていました。
色々と見ることができました。
ただ、最初に乗って奥の端の席だったので
お兄さんの説明がほぼ聞こえない。
ガソリンの匂いがすごくてマスクは必要ですね。
不満だったのは、予約時間よりも早く着いて
受付の仕方が良くわからなかったのですが
予約有りの方は先にどうぞ、だったのですが
受付の方は何も言わずに、時間がまだなのでそこに並んでくださいと言われ、そこ？
沢山のひとが並んでどこが何の列がかわからない。
と思いながら並ぶ場所がわからず
どこに並べば良い？
1番後ろ？ですか？
て聞いたら、じゃあ次に受付するから
待って下さい、、
そして次に受付したら早い時間を渡されました。
別に早くして欲しいとは言っていないのに
チケット売り場の方の対応が気分悪かったです。言葉が足らな過ぎます。
忙しいとは思いますが
一人一人ちゃんと、こちらの言葉を聞いて欲しいです。
愛想も決して良くはなかったです。

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Anyone can enjoy it.

Posted Date: 2026/05/02

meg

Since I arrived quite early before my reserved time, I asked if I could be accommodated earlier, and they kindly agreed. Perhaps because it was just before Golden Week, the boat wasn't full, so there was plenty of space inside. I could see corals and fish through the large glass screen. The sea was a bit murky, but I was lucky enough to spot a sea turtle and a clownfish.予約時間よりかなり早く着いたので時間を早めてもらうお願いをしたら、快く了解いただけました。GW直前だからか満員ではなかったため船の中も余裕があり、大画面ガラスで珊瑚や魚が見えました。少し海が濁り気味だったのですが、ウミガメやカクレクマノミも見つけることが出来てラッキーでした。

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Sea turtle

Posted Date: 2026/02/14

ヨッシー

I rode the glass-bottom boat at Kabira Bay for the first time in decades. You can see coral reefs that are over 500 years old, beautiful blue corals, and sea turtles.

However, there was some trash floating in the water when we went out to sea, which was a bit disappointing. I recommend making a reservation since there are discounts available.数十年振りに川平湾グラスボードに乗りました。珊瑚礁は500年以上の大きい珊瑚礁や青い珊瑚礁やウミガメが見られます。

沖に出るとゴミが浮いていました。チョット残念でした。
割引きが有るので予約がお勧めです。

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Reply from Marine House GURUKUN

Thank you for boarding.
Ishigaki Island often receives trash from overseas, which negatively impacts marine life, so our beach staff cleans up every day. 💦
Thank you for the beautiful photos.
If there is another opportunity, I look forward to working with you again.ご乗船ありがとうございます。
石垣島は海外からのごみも良く流れてきます、海洋生物に悪影響を及ぼすので毎日ビーチスタッフが掃除しているのですが💦
綺麗なお写真ありがとうございます。
又機会がありましたら宜しくお願い致します。

Machine translated from Japanese

I was able to feel the very beautiful sea.

Posted Date: 2026/02/05

エスエス

After checking in, it's just a short walk to the sandy beach. On the day of our visit, it was sunny, and I was first amazed by the beauty of Kabira Bay. The white sandy beach and the crystal-clear sea were stunning. I could have watched it forever without getting on a boat. There was no wait time for the boat, and we departed right away. The view of the seabed from the glass-bottom boat was incredible, with a variety of corals and fish to see. Although I didn't get to see one, I heard that if yo… After checking in, it's just a short walk to the sandy beach. On the day of our visit, it was sunny, and I was first amazed by the beauty of Kabira Bay. The white sandy beach and the crystal-clear sea were stunning. I could have watched it forever without getting on a boat. There was no wait time for the boat, and we departed right away. The view of the seabed from the glass-bottom boat was incredible, with a variety of corals and fish to see. Although I didn't get to see one, I heard that if you're lucky, you might spot a sea turtle as well. There were various explanations provided, and the experience lasted about 30 minutes, which was just right. 受付終えてから出発する砂浜まで徒歩すぐです。
当日は、晴れでしたが、まず川平湾の美しさに驚きました。白い砂浜、透明度の高い海。
ボートに乗らなくてもずっと見ていられそうでした。
ボートまでそんな待ち時間もなくすぐに出発しました。グラスボートから見る海底は、素晴らしく様々なサンゴや魚を見ることができました。自分は、見ることができませんでしたが運がよいと海ガメも見ることができるらしいです。いろいろな説明もあり体験時間は約30分とちょうどよかったです。

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Reply from Marine House GURUKUN

Thank you for boarding.
Kabira Bay is very beautiful and has three Michelin stars, right? (^^)/
I'm glad to hear the weather was nice as well.
We look forward to your next opportunity to use our services.ご乗船ありがとうございます。
川平湾はミシュラン３つ☆でとても綺麗ですよね(^^)/
お天気も良かったみたいで嬉しいです。
又機会がございましたらご利用お待ちしております。

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Glass boat

Posted Date: 2026/01/17

けんちゃん

The transparent sea and the fish and coral that I usually can't see were absolutely amazing. I was moved and very satisfied with my trip to Okinawa. I want to come back again.透き通った海に普段見る事の出来ない魚や珊瑚は最高に良かったです
感動と沖縄に旅して満足しました。
また来たいと思いました

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Reply from Marine House GURUKUN

Thank you for boarding with us this time.
Thank you for the wonderful photos as well! (^^)/
If you come to Ishigaki Island again, please feel free to stop by.この度はご乗船ありがとうございます。
素敵なお写真もありがとうございます(^^)/
また石垣島に来られたらぜひお立ち寄りくださいませ。

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