Tours/Big Island of Hawaii/Glass-Bottom Boat Reef Tour
Viator · group up to 24 pax

Glass-Bottom Boat Reef Tour

4.6(528)Big Island of Hawaii1 hour
VIATOR4.6(324)TRIPADVISOR4.6(204)

Description

Our tours depart from the Kailua-Kona pier on the Big Island of Hawaii. Discover the beauty of Kona's underwater world aboard Marian, a 36-foot (10-meter), custom-designed glass-bottom boat. Your expert naturalist guide provides insight to the world of corals and colorful tropical fish. View Kona's coastline, mountains, historical sights, and maybe even spot frolicking dolphins or seasonal whales. This 50-minute tour is a must for all ages, from kids to avid divers and snorkelers eager to learn more about Hawaii's unique marine life. Bring along your camera and wear comfortable clothing and footwear. Sit back and relax while the boat skims over the reef, putting you within inches of the underwater world. Marian was specially designed and built for just this experience.   Note: We are located on the Big Island of Hawaii. Please ensure you are on the correct island prior to booking. We cannot wave our cancelation/refund policy for booking when on a different island.

Tour Options

Glass-bottom Boat Reef Tour

Itinerary

50 min

Our tour departs from the Kailua Pier on the Big Island of Hawaii (Hawaii Island) and will take you on a glass bottomed boat adventure in Kailua Bay. Cruise along the coastline hovering within inches of the coral reef. Enjoy a lively narration by a knowledgeable marine naturalist as you take in the beauty above and below the ocean’s surface. An eco-tour that is fun for all ages! Private Charters available!

Highlights

Local guide
Restroom on board
Live commentary on board
Water and Ginger ale

What's included

Included
Local guide
Restroom on board
Live commentary on board
Water and Ginger ale
Not included
Food and drinks, but cold water is available

Traveller Ratings

4.6
528 reviews
5
402
4
77
3
32
2
8
1
9

Important Information

  • Infants and small children can ride in a pram or stroller
  • Service animals allowed
  • Infants are required to sit on an adult’s lap
  • Suitable for all physical fitness levels
  • Departs from Kailua Pier, on the Big Island of Hawaii. The pier is adjacent to the Courtyard Marriott King Kamehameha Kona Beach Hotel, 75-5660 Palani Rd., Kailua-Kona, HI. You may park in this lot.
  • Check in at the boat 10 minutes prior to departure
  • Insure you budget 10 minutes to park and walk to the boarding location.
  • Meet the boat midway down pier on left side. Look for blue and yellow flags on boat mast.
  • This tour requires reconfirmation with the local supplier
  • Children must be accompanied by an adult (Two children/infants max per one adult)
  • The boat will leave at the time of departure so please be on time.
  • Not recommended for those extremely prone to sea sickness

Reviews(528)

M
Meng_F
July 1, 2026
Great experience for...

Great experience for small children and elderlies. But not a good idea if you have motion sickness. The crew will help you if you get motion sickness.

Operator response

Aloha Meng! We're glad to hear the tour was enjoyable for your group. We’re sorry to hear about the motion sickness. Your feed back helps improve. Mahalo!

N
Neena_G
June 24, 2026
Perfect outing for those that don't snorkel

You might think 50 min is too short but timing was perfect. Great excursion for those that can't snorkel but want to see what's in the sea. Boat was easy to maneuver on and off for the handicap. Guides were friendly and informative. Our family enjoyed this!

Operator response

Aloha, we are grateful for your kind words and for taking the time to share your review. Mahalo.

L
Lynakat
June 23, 2026
Glass bottom adventure

Very interesting and informative. The crew took us to known reefs way out in Kona bay. We had a great time.

Operator response

Aloha, thank you for your review. We are glad you enjoyed the tour and appreciate you sharing your experience with us. Mahalo.

S
Safari56946217935
June 22, 2026
Nice trip with family

It’s a nice experience, we saw dolphins swam, the boat is good and the view is awesome. My daughter enjoyed the fish view, and it’s really like a snorkeling view. Captain is friendly and contact easily, we’re a little bit late for check in and staff helped us by phone. Thank you for the unfortunate experience!

Operator response

Thank you for your kind review. We take pride in making our guests feel welcome, and we are glad you enjoyed your time on the tour. Mahalo.

G
Go11466569921
May 25, 2026
Great experience!

This was such a fun, easy boat tour. We were able to see several types of fish and lots of sea urchins. Amy was a fantastic guide with lots of fun facts! Very grateful for the cups of ginger ale they provided as they helped ease any hint of nausea. My 10 year old really enjoyed herself!

Operator response

Thank you so much for coming aboard! We're glad your family had a fun and easy tour, and we're happy the ginger ale helped keep things comfortable. Mahalo for the kind words about Amy!🌺

P
Pioneer18897642610
May 4, 2026
Fabulous saw loades of fish and a huge crayfish.

Wonderful informative tour. Added bonus of pod of spinning dolphins.

Operator response

Aloha, thank you for the 5 stars. We appreciate you sharing your review, and we’re so glad you enjoyed seeing the dolphins. They are always a pleasant surprise!

J
Jennifer S
April 26, 2026
Totally recommend!

Excellent guides and captain.

Operator response

Thank you, Jennifer. Your five star review means a lot to us. We're so glad you enjoyed the crew and your time out on the water.

L
Lola1279
April 21, 2026
Must do in Kona

It was a fantastic experience- our guide Amy was very personable, knowledgeable and friendly.

Operator response

Hi Lola, thank you for the great review. We truly appreciate it, and it makes our day to hear you enjoyed being out on the water with us.

N
Nancy_S
April 20, 2026
Definitely a five star rating

The staff was amazing. My daughter and grandchildren had a wonderful time. The staff was very interacting with the people in the boat.And with myself and my family, I would highly recommend it to anyone of any age

Operator response

Thank you, Nancy, for such a wonderful review. We're so glad your family enjoyed their time with us. It means a lot to know our crew helped make the trip special, and we truly appreciate you recommending us to others.

J
Jr_M
April 18, 2026
Glass bottom boat

Loved leaving the pier with the theme song from Gilligan's Island playing. The guide had a lot of jokes and puns Very entertaining and educational

Operator response

Aloha! We’re so glad you joined us and enjoyed the lighthearted energy aboard. Thank you for taking the time to share such a kind review.

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