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Glass-bottom Boat Reef Tour

Big Island of Hawaii, Hawaii, USA

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50 minutes
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Adult(s) x (Age 12 To 99)
Children x (Age 1 To 11)
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  • Informative, friendly and professional guide
  • Excellent value for money
  • Family friendly
  • See the underwater world without getting wet


Your tour begins at Kailua Pier, right in the center of Kailua-Kona village across from Courtyard King Kamehameha's Kona Beach Hotel. Departures are at 11am Mondays and Fridays, 12:30pm Wednesdays. Boarding Marian, a 36-foot (10-meter), custom-designed glass-bottom boat is easy: Just step up a couple of steps to the boarding ramp and down a couple of steps to the main hull and viewing area. All guests sits around four large viewing boxes with comfortable cushioned seats where no one can block your view. Your expert naturalist guide goes over the safety features on board, and then off you sail. 

The reefs in Hawaii are “fringing reefs,” meaning they are right next to the coastline. Marian was specially designed to get over the very shallow waters and right up to the shoreline, putting you within inches of the reefs. Your naturalist tells you all about the processes taking place on the reef: how the beautiful white sands are formed, the strange mating practices of fish, and how coral reefs resemble cities at war. The crew have been diving these waters for 30 years, so there's no end to the stories they've collected. Cruise over a pinnacle inches from the glass, a great photo opportunity. As boat goes off the shoreline, you'll see how quickly the ocean bottom plunges deeper and deeper. You might get a chance to view frolicking spinner dolphins or seasonal humpback whales. Feel free to move about the boat, look out from the bow, or relax in your seat and look through the elliptical windows. As you crusie along, you’ll enjoy vistas of the rugged shoreline and slopes of Kona. Historical sights include Hulihee Palace; Mokuaikaua Church, the oldest Christian church in Hawaii; Kamakahonu, where King Kamehameha I made his home in his final years; and ʻAhuʻena Heiau, his personal shrine. You might want to walk around the village later to explore these sights. Your tour ends as you cruise back to Kailua Pier. 

This tour is a must for anyone who wants to see and learn about Hawaii’s reefs, and you don’t even have to get wet. There are no age or size restrictions, so it's great for families. Remember to wear comfortable shoes and clothing and bring a camera. Sunscreen and a hat are always a good idea, too.


  • Live commentary on board
  • Local guide
  • Food and drinks, but cold water is available
Additional Info:
  • 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.

Meeting Point

Kailua Pier, right in the village of Kailua-Kona, Hawaii Island (Big Island)
Departure Time:
11am Monday and Friday
12:30pm Wednesday
  • Glass-bottom Boat Reef Tour


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