If you’re looking for a way to see Hawaii’s marine environment without getting wet, this Big Island Underwater Submarine Adventure in Kona offers a fascinating 1.5-hour journey beneath the waves. For $160 per person, you get roughly 45 minutes of underwater viewing, combined with the thrill of riding in a submarine once featured in National Geographic. It’s a perfect blend of comfort, education, and awe-inspiring sights.
What truly makes this experience stand out are the clear views from the fish-eye windows and the knowledgeable guides who bring the underwater world to life with engaging commentary. Plus, the fact that it’s suitable for almost all ages—no scuba certification required—is a big plus for families or groups seeking a memorable adventure.
On the downside, this tour doesn’t include pickup and drop-off, so you’ll need to arrange your own transportation. Also, the actual underwater time is about 45 minutes, which might feel short for some underwater enthusiasts. Nevertheless, the combination of ease, safety, and stunning visuals makes it a solid choice for those wanting a hassle-free but impressive view of Hawaii’s waters.
This tour is especially suited for families, first-timers, or travelers who prefer a comfortable, guided experience to see marine life close-up without the physical demands of snorkeling or diving.
Key Points

- Comfortable and accessible: No scuba gear needed; suitable for most ages.
- Educational and engaging: Guides provide informative commentary in multiple languages.
- Excellent value: About 45 minutes of underwater viewing for a reasonable price.
- High-quality views: Fish-eye windows offer a clear, immersive perspective of marine life.
- Location convenience: Check-in at the King Kamehameha Kona Beach Hotel, with nearby parking options.
- Weather dependent: The tour is approximately 1.5 hours, weather permitting.
An In-Depth Look at the Big Island Underwater Submarine Adventure

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The Itinerary and What to Expect
When you arrive at the King Kamehameha Kona Beach Hotel, you’ll check in for your scheduled departure, typically available in the morning or afternoon. The entire experience lasts about 1 hour and 30 minutes, with roughly 45 minutes spent actually underwater, descending to more than 100 feet. This depth is enough to reveal a vibrant coral reef environment and an array of marine creatures, including colorful fish and possibly some interesting shipwrecks.
The ride begins with a quick walk down a special ladder onto the submarine, a vessel that looks like something out of a science-fiction movie but is designed with maximum comfort and safety. Once seated, you’ll enjoy a smooth descent into the aquatic world through large, fish-eye windows that give you a panoramic view of the reef and the creatures that inhabit it.
The guided narration—available in English, Japanese, Korean, and Chinese—adds context and details about what you’re seeing, making the experience both entertaining and educational. Reviewers consistently mention how informative guides enhance the experience, with one noting a guide who was “cheerful & knowledgeable,” able to weave stories about the marine life and local history.
The Marine Environment
Once submerged, we loved the way the coral formations and schools of fish appeared through the portholes. Some reviews mention ships and wrecks, providing a historical or adventurous element to the underwater scenery. The views are remarkably clear, thanks to the well-maintained windows and the clean condition of the submarine.
What’s especially appealing is the proximity to the marine creatures. Unlike traditional boat snorkeling, this offers a close-up perspective without the need to get wet or worry about floatation devices. Many guests describe it as “seeing all the marine life without getting splashed,” which is perfect for families with kids or those who are slightly wary of water.
The Guide’s Role and the Experience Atmosphere
The guides receive consistent praise for their friendly demeanor and knowledgeability. One reviewer even described her guide as “funny with her dad jokes,” which helps make the experience more engaging for children and adults alike. The multilingual options ensure a broader audience can enjoy the commentary, making it accessible for international visitors.
More Great Tours NearbyThe Practical Aspects
Parking is simple, with free public spots nearby or discounted parking at the hotel if you’re staying there. Remember, the tour does not include transportation, so plan accordingly. The check-in process is straightforward, and the experience is generally well-organized.
The cost of $160 per person may seem high for some, but when you consider the convenience, the safety, and the stunning underwater views, many visitors consider it good value. It’s especially valuable for those who prefer not to snorkel or dive but still want a high-quality glimpse of Hawaii’s underwater beauty.
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Authentic and Well-Reviewed
With an average score of 4.6 out of 5 from 146 reviews, it’s clear that most visitors walk away satisfied. Testimonials highlight the stunning fish sightings, safe environment, and the informative guides making complicated marine topics easy to understand.
A recurring theme in reviews is the family-friendly atmosphere and the feeling of “seeing the underwater world without the hassle of diving gear,” as one guest put it. Several reviewers also mention how the crew made safety a priority, which reassures travelers who might be hesitant about unfamiliar underwater experiences.
Who Should Consider This Tour?
If you’re after a relaxing, informative, and visually impressive activity that suits a range of ages and physical abilities, this submarine tour hits the mark. It’s ideal for families, older travelers, or anyone curious about Hawaii’s marine ecosystem without the physical exertion of snorkeling or diving.
Final Thoughts

The Big Island Underwater Submarine Adventure offers an accessible way to see one of Hawaii’s most stunning environments. It balances comfort and education, making it perfect for travelers who want to enjoy the spectacle of marine life without the need for masks, fins, or certification. The high-quality views and knowledgeable guides turn a simple boat ride into an immersive experience.
While it might feel a bit brief, the quality of the underwater sights and the ease of the experience make it a worthwhile addition to any Kona itinerary. Whether you’re traveling with kids, seniors, or just prefer a calm, guided adventure, this tour provides a memorable window into Hawaii’s vibrant underwater world.
FAQ

Is this tour suitable for children?
Yes, children who are 36 inches tall or taller can participate. Many reviews mention kids loving the experience, especially since it’s safe and doesn’t require swimming or diving skills.
Are there any age restrictions?
The main requirement is height—riders must be at least 36 inches tall. Other restrictions aren’t specified, but the experience is generally suitable for all ages.
Does the tour include transportation?
No, transportation isn’t included. You need to arrange your own parking or transport to the check-in location at King Kamehameha Kona Beach Hotel.
How long is the actual underwater viewing?
The underwater portion lasts about 45 minutes, within the total 1.5-hour experience.
Are guides available in different languages?
Yes, the guides speak English, Japanese, Korean, and Chinese, making it accessible for international visitors.
Is the tour weather-dependent?
Yes, it runs weather permitting. If conditions aren’t suitable, the tour might be canceled or rescheduled.
What is included in the price?
The ticket covers the submarine ride and the guided commentary. It does not include meals, photos, or transportation.
In the end, this Big Island submarine tour provides a balanced mix of adventure, comfort, and education. It’s a fantastic way for almost anyone to experience Hawaii’s remarkable underwater landscape without getting wet, making it a top pick for a memorable family outing or a relaxed day activity.
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