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Glass-bottom Boat Reef Tour

Kailua-Kona, United States

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Free Cancellation
up to 24 hours in advance
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icon1 hour  (Approx.)
Mobile ticket
iconOffered in: English
Good for avoiding crowds


Experience the rainbow-colored fish and bright corals beneath the waves without ever getting wet during this glass-bottom boat trip from Kona. Climb aboard your 36-foot (10-meter) vessel (specially designed for floating above reefs) with an expert naturalist as you explore the incredible marine landscape of Hawaii. As you cruise, observe Hawaii’s underwater coastline and admire fascinating creatures like dolphins, turtles and maybe even a seasonal whale or two.
  • Tour the coral reefs just off the Big Island aboard a glass-bottom boat
  • Experience the magical underwater world of Hawaii without ever getting wet
  • Travel aboard a custom-built boat designed to glide over shallow reefs
  • Admire rainbow-colored tropical fish, beautiful coral, dolphins, and humpback whales
  • Learn about the geology and ecology of Hawaii
  • Perfect trip for families and children
  • Great way to experience Hawaii's marine life
Saved to wishlist!
Live commentary on board
Local guide
Food and drinks, but cold water is available

Departure Point

Kailua Pier, Kaahumanu Pl, Kailua-Kona, HI 96740, USA

Return Details

Returns to original departure point
Dive into the magical underwater world of Hawaii without ever leaving the boat during this ride aboard a glass-bottomed vessel. This special ship offers a unique window into the wondrous mysteries and fascinating creatures that inhabit the Big Island’s shores and reefs.

Check in for your morning boat ride at Kailua Pier, climbing down into the viewing area of your totally custom-built 36-foot (10-meter) boat. Grab a seat on a cushioned couch alongside one of the boat’s four viewing windows and receive an introduction and overview of your trip from your on-board naturalist.

Cruise out into the mellow waters just off the Big Island as you admire some of this amazing coastline’s unique coral reefs. Your unique shallow-bottom boat can get right up to the edge of these amazing underwater wildlife areas, offering you the perfect view. As you gaze in amazement at the colorful fish and corals below, listen as your naturalist narrator shares a few insights into reefs and the ecological forces that shape them. Learn where some of Hawaii’s beautiful white sand comes from and get a peek “behind the curtain” of fish mating rituals.

Continue your ride by proceeding into deeper waters, allowing you views of an amazing underwater pinnacle and a chance to watch as the bottom quickly drops off into the deep ocean. As you ride, you might even have the chance to spot spinner dolphins and (depending on the season) humpback whales. And if you get tired for some reason of the views from below, turn your gaze toward the horizon, where you’ll be able to spot historic shoreline sights like Hulihee Palace, Mokuaikaua Church and Kamakahonu (where King Kamehameha I made his home in his final years), plus much more.

Finish your magical experience along Hawaii’s beautiful coast by traveling back to Kailua Pier.
Stop At:  
Kona Glassbottom Boat - Kailua Bay Charter Co.
Visit Kona's underwater world aboard the Marian!
Duration: 50 minutes
Admission Ticket Free
  • Confirmation will be received at time of booking
  • Child rate applies only when sharing with one paying adult
  • Children must be accompanied by an adult
  • A maximum of 24 people per booking
  • This tour requires reconfirmation with the local supplier
  • Departs at 11am Monday and Friday or 12:30pm Wednesday
  • Departs from Kailua Pier, directly across from Courtyard King Kamehameha's Kona Beach Hotel, 75-5660 Palani Rd., Kailua-Kona, HI
  • Tour departs midway down pier on left side. Look for blue and yellow flags on boat mast.
  • Not wheelchair accessible
  • Stroller accessible
  • Service animals allowed
  • Near public transportation
  • Infants must sit on laps
  • Most travelers can participate
  • This tour/activity will have a maximum of 24 travelers
  • OPERATED BY Kailua Bay Charter Co

For a full refund, cancel at least 24 hours in advance of the start date of the experience.

  • This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

  • This experience requires a minimum number of travelers. If it’s canceled because the minimum isn’t met, you’ll be offered a different date/experience or a full refund.

Learn more about cancellations.

The answers provided below are based on answers previously given by the tour provider to customers’ questions.
What is the maximum group size during Glass-bottom Boat Reef Tour?
This activity will have a maximum of 24 travelers.

See all safety measures taken by Glass-bottom Boat Reef Tour.


67 Reviews
Reviews by Viator travelers
Showing 1-10 of 67 reviews
glass bottom woah
, Feb 2020
Went on a saturday morning and there were only 6 of us total and it was great! Our tour guide was very nice and knowledgable. She was very sweet to our 3 yr old and took the time to talk about all of the different fish. Totally worth it.
icon Response from Host , Feb 2020
Mahalo for the wonderful review! It is so nice to hear that you enjoyed your tour and found it to be totally worth it.
Most excellent tour
, Feb 2020
It was a most excellent tour! We saw a large variety of colorful reef fish and also a pod of Spinner Dolphins when we ventured into an area the Captain has seen them earlier. Also, we learned a lot about the island, reef, fish and dolphins from the most excellent tour guide!!
icon Response from Host , Feb 2020
We are so happy to hear that you found our tour excellent, and enjoyed viewing and learning all about the fish, coral and dolphins. What a treat to get a visit from the Spinner Dolphins! Mahalo for the great review.
somewhat disappointed
, Oct 2019
My tour was cancelled and rescheduled 2 times. 1st cancellation due to steering problems on the boat and 2nd time because the captain blocked out the dates. I was unable to do at any other time due to prior arrangement/events. Needless to say I was somewhat disappointed.
icon Response from Host , Nov 2019
We are so very sorry that we had to cancel. It was due to unforeseen circumstances. Please do try to book with us next time you are in Hawaii and I am sure we can accommodate you. Thank you for the review.
Glass bottom boat tour
, Jan 2019
Captain and host very friendly and Host made sure to include every guest. Great story telling as well as good Q&A time. Oh, and big bonus, we got to see school of spinner dolphins! The Only part we had issue with was another guest who thought taking a cell phone call during hosts first greeting/orientation and talking over her was more important than everyone else’s experience. We got over it though. 😀
Great low cost Reef and Dolphin Tour
, Dec 2018
See reef and fish. See spinner dolphins. Great for those who don't snorkel. Mesmerizing. Multi-colored small fish everywhere.
Great Family Boat Tour!!
Pam B
, Jul 2018
We had a wonderful time on this tour!! Our group consisted of 13 family members from infants to grandparents. Everyone enjoyed it! The staff was easy to reach with any questions we had beforehand including where to park, etc. The tour guide was so interesting and really made the trip. Our two older grandkids (5 years and 6 years) got a chance to steer the boat, which was a highlight for them, but we all had a great time. So happy we did this tour. Highly recommend it!
Tour was good for little kids or...
, Feb 2018
Tour was good for little kids or seniors...staff was good!
Had an amazing time, made better...
Donna W
, Nov 2017
Had an amazing time, made better with all the wonderful info our guide gave! We don't scuba so now we now the beauty they see!
This tour was great, the host was...
, Oct 2017
This tour was great, the host was very knowledgeable about the area and all the fish species. Very friendly and helpful with any questions we had about the reefs and the fish that live there.
This was a wonderful way to see the...
Mary H
, Aug 2017
This was a wonderful way to see the coral reef and it's inhabitants. Loved how knowledgeable our guide was and how she shared her knowledge with us. Very good experience.

Product code: 36904P1

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