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Address: 68-1292 S Kaniku Dr, Mauna Lani Resort, Puako, Island of Hawaii, HI 96743
Phone Number: +1 808-885-7883
8:00 am - 5:00 pm
Closed now
See all hours
Sun - Sat 8:00 am - 5:00 pm
Recommended length of visit: 2-3 hours

Welcome aboard Winona, our 50-foot, Polynesian style sailing catamaran!...

Welcome aboard Winona, our 50-foot, Polynesian style sailing catamaran! Winona is U.S.C.G. Certified for a maximum of 49 passengers, with plenty of room to comfortably accommodate large groups while still being cozy enough for smaller, intimate gatherings.

She has a 3/4 covered cabin area to protect you from the sun and wind, and her large viewing windows allow you to still enjoy the views outside from her covered seating area. Her open deck is spacious and provides plenty of outside seating and areas to sunbathe. Winona's "Stairway to the Sea" allows easy access to and from the ocean for snorkelers and swimmers. She is equipped with two restrooms for your convenience.

The dress code on Winona is casual to resort attire. We suggest flat, soft-soled shoes or sandals. Hard sole or high heel shoes are not recommended. Winona does have nonskid decking so bare feet are welcome. We recommend you bring along sunglasses, a hat or visor, waterproof sunscreen and a beach cover up to help protect you from the sun. Towels are provided.

Our helpful staff will provide instructions and then equip you with all you need for a spectacular snorkeling experience! Mask, Fins and Snorkel sets or View Boards with built in windows are available to start your adventure. We offer everyone a safety vest and defogger to help keep your experience both safe and fun!

If you would like a special keepsake of your group's event, let us know. We can arrange professional video services (above and below the surface) for your group at an additional cost.


For individual travelers staying on the Resort's grounds, the hotels provide free shuttle service to and from our departure and arrival locations.

Our Captains and Crew look forward to assisting you in creating wonderful memories of your stay in Hawaii!


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TripAdvisor Reviewer Highlights

Read all 132 reviews
Visitor rating
  • 121
  • 7
    Very good
  • 1
  • 0
  • 1
All you have to do is breath

Have been diving with mauna lani sea adventures for 4 years now. Great experience! Small groups, good dive sites, and knowledable and friendly dive masters. This dive service... read more

5 of 5 bubblesReviewed 1 week ago
Mark W
Seattle, Washington

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132 Reviews from our TripAdvisor Community

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Showing 130: English reviews
Seattle, Washington
Level Contributor
5 reviews
3 attraction reviews
5 of 5 bubbles Reviewed 1 week ago

Have been diving with mauna lani sea adventures for 4 years now. Great experience! Small groups, good dive sites, and knowledable and friendly dive masters. This dive service can't be beat, try it!

1 Thank Mark W
2 reviews
5 of 5 bubbles Reviewed 1 week ago

I have now been on 6 dives with Gary as the dive master, they have been exceptional. Great care is taken for the diver safety, interest and pleasure. If you want to dive from Big Island this is the outfit to dive with!!

Thank Gary S
Edmonton, Canada
Level Contributor
16 reviews
common_n_attraction_reviews_1bd8 13 helpful votes
5 of 5 bubbles Reviewed 1 week ago

Recently returned from the Big Island after a great vacation. One of the highlights was our experience with Mauna Lani Sea Adventures Snorkel excursion. Our first trip was so good we returned two days later to do it again. Second trip we were lucky enough to experience the first whale sighting of the season. As other reviewers have noted these... More 

Thank john k
Prague, Czech Republic
1 review
5 of 5 bubbles Reviewed 2 weeks ago

Together with my family, we have been coming back to mauna Lani Sea Adventures for 20 years, always very happy about the people, service and attitude, simply speaking second to none ....

Thank ahoytom
Level Contributor
3 reviews
5 of 5 bubbles Reviewed 2 weeks ago

I have dived with Mauna Lani Sea adventures at least 7 times. i have also logged well over 300 dives. Everyone is very knowledgeable and very low key but there are no short cuts when it comes to safety. The equipment is excellent so it is truly not necessary to bring any equipment with you if you desire. Gary is... More 

Thank Samuel P
Level Contributor
3 reviews
common_n_attraction_reviews_1bd8 2 helpful votes
5 of 5 bubbles Reviewed 3 weeks ago via mobile

These guys are the best! We had an amazing experience with everyone at MLSA, especially Spike, Gary, and Don. Their friendliness, knowledge, and commitment to high quality, small group experiences made each day fun and memorable. We would definitely come back to MLSA. They took me from snorkelling on my first day, to diving with sharks and turtles on my... More 

Thank LisaToronto14
Berkeley, CA
Level Contributor
9 reviews
8 attraction reviews
common_n_attraction_reviews_1bd8 6 helpful votes
5 of 5 bubbles Reviewed 3 weeks ago via mobile

We spent some time researching snorkeling trips. Most of the reviews and pictures showed boats packed with people snorkeling in a bay packed with people. We desperately wanted to avoid that type of experience. While Mauna Lani can accommodate 40+ ppl. When we went, it was a small group of 10, and we visited a beautiful bay with tons of... More 

1 Thank traveling2jos
Chicago, Illinois
Level Contributor
4 reviews
common_n_attraction_reviews_1bd8 1 helpful vote
5 of 5 bubbles Reviewed 4 weeks ago

We did a catamaran based snorkel, a discover scuba, and several regular scuba dives with ML Sea Adventures. Steve, Ray, Don, Kelly, Jeff and others were a great help. Spike was really good with our 11 yo, helping her to not only snorkel & scuba for the first time, but also dive head-first from the boat-deck into the sea (a... More 

Island of Hawaii, Hawaii
Level Contributor
3 reviews
5 of 5 bubbles Reviewed November 3, 2016

The crew, dive-masters and Debbie in the office make diving easy and fun. Dive-masters are very familiar with the fish and critters in the area and will review what you saw during the break between the two morning dives.

Thank elmac268
Bedford, New Hampshire
Level Contributor
3 reviews
5 of 5 bubbles Reviewed October 12, 2016 via mobile

We went out for a morning sail and snorkel with Captain Ron, Captain Spike and a great crew. Crew was experienced, informative and very friendly. Equipment (snorkel masks, fins, etc) was all well organized and in great condition. Crew did everything they could to give each passenger/couple a great experience!

Thank rkdecker

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Questions & Answers

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Typical questions asked:
  • Will you pick up and drop off at my hotel?
  • I have a family of 7. Can your tour accommodate all of us together?
  • How should I dress for this tour?