Maui’s Most Fun Dive Adventures

Aloha and welcome aboard the magnificent Maui Diamond, where we treat every guest like the precious gem they are! Our passionate crew of diving enthusiasts can’t wait to share Maui’s spectacular underwater world with you, from the world-famous Molokini Crater with its crystal-clear waters to the awe-inspiring Cathedrals at Lanai with their dramatic lava formations and abundant marine life.

Our spacious 46-foot vessel was custom-designed specifically for divers, featuring a comfortable cabin, ample deck space for gearing up, and a specially engineered hull that ensures the smoothest ride to our dive sites.

You’ll appreciate the thoughtful amenities as we cruise to your underwater adventure, whether you’re here to complete your first open water dive or you’re a veteran explorer returning for another taste of Maui’s incredible underwater paradise.

For those joining us for the first time, prepare to experience the Maui Diamond difference – where personalized service meets professional expertise in creating unforgettable diving memories. And to our cherished returning guests – welcome back to your diving ohana! We’re thrilled to have you aboard again and can’t wait to show you what new wonders we’ve discovered since your last visit.

Maui-Diamond

Our Commitment to Safety & Sustainability

At Maui Diamond, your safety and the health of our ocean are our top priorities. Our experienced crew follows rigorous safety protocols before, during, and after every dive. From regular equipment inspections to detailed dive briefings and surface support, we ensure that every adventure is as secure as it is unforgettable.

We’re also passionate about protecting the underwater world we love. We proudly use reef-safe sunscreen, minimize waste onboard, and follow respectful diving practices to preserve Maui’s delicate marine ecosystems. By diving with us, you’re helping to support ocean conservation—one dive at a time.

We also strive to educate our guests on best practices for ocean stewardship. Whether it’s briefing divers on how to interact respectfully with marine life or sharing insights about local conservation efforts, we believe that informed divers make the best ocean advocates.

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Why Dive with Maui Diamond?

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Why Dive with Maui Diamond?
We’re not trying to be the biggest – just the best at what matters.
We’ve crafted the kind of dive day we’d want for ourselves: smooth, safe, relaxed, and full of fun, whether that’s spotting a rare nudibranch or posing with our trusty toy shark.
We take diving seriously—but we’re never too serious to enjoy the day.

  • A Boat Built for Good Vibes – Our 46′ custom dive boat was designed for comfort and function. Plenty of space, shade, and elbow room to gear up or just kick back.
  • Small Groups, Big Experience – You’ll get more personal attention, more bottom time, and less crowding, on deck and underwater.
  • A Crew You’ll Actually Remember – We love what we do and it shows. Professional, knowledgeable, and just the right amount of ridiculous.
  • Diving Tailored to You – Whether you’re newly certified or hundreds of dives deep, we’ll match the dive to your style, pace, and goals.
  • Smooth from Start to Surface – We’ve fine-tuned every part of the process so your day flows easily…and the only surprises are the cool kind, like turtles or mantas.

Come dive with us and see why so many guests return year after year. Good dives, good people, and a boatload of fun—that’s the Maui Diamond difference.

Why Dive with Maui Diamond?
4.9
Based on 252 reviews
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Chenyang Zhou
21:48 23 Jun 25
Absolutely amazing experience. The staff are knowledgeable and patient with passion and love for the ocean and their job! Dived with Joe, super cool guy. And we saw a whaleshark on the way back!
Nan Cayler
03:32 23 Jun 25
Great crew, good operation for a large boat! Equipment fit well, worked well. Thank you!
Larry Connor
22:17 22 Jun 25
The crew was experienced and very attentive. Our dive master did a great job of not only pointing out unique sea life, but telling us what it was on his pad. I enjoyed the crater, but the second dive (at Marty's reef) was even better.
Bradley de Geus
06:41 20 Jun 25
Fantastic Boat with an amazing crew who loves what they’re doing and knows all the popular dives sites as well as some hidden gems. We picked a wildcard day and it was amazing. Captain Ben was super friendly and very thorough with the safety briefing. The dive team was well staffed and very organized. We had divemaster Don who was super chill, laid back, always smiling and very thorough on the dive briefings and provided a very clear picture of each dive site and the different things we might encounter at each dive site. If you’re looking for a unbeatable diving experience this is it!!
Francesca Capizzi
17:52 17 Jun 25
Highly recommend! The crew is a 10 and the divings are amazing, equipment and boat in perfect conditions. Moreover if you have a good air consumption the instructors will extend your dive and you are not forced to come back with your buddy / group.
Thank you so much !
Kevin Greer
12:38 17 Jun 25
Maui Diamond Sea Sports was awesome to dive and snorkel with. We chose an outfit whom would allow me to dive and my wife to snorkel. They were 100% professional and took us to the best dive spots in Maui, especially when weather turned and got in the way (Pali coast sites). We saw so much with them (Turtles, eels, octopus, so many fish, starfish, etc.) It was an absolutely epic adventure and would not have been so without Captain Ben whom took us up and beyond and David wrote out fish names underwater on his white board to educate. Very cool experience and I so HIGHLY recommend - I'm going to dive with them again!!!
Jeremiah Farinella
20:51 14 Jun 25
Great dive experience with Michelle, Dave, and Crew from Maui Diamond. Equipment was in great shape and the boat had plenty of space for the group size. Used aluminum tanks to 3k psi, digital dive computer, normal BC and backup regs. We dove on the 13 June 2025 with the 1st dive down to around 80 to 90ft at Molokini Crater and the second dive at Pu'pu Olai cinder cone around 40-50ft. During the dive notable sealife included baby reef sharks, barcuda, eagle ray, lion fish, sponge crab, plenty of native Hawaiian fish and great coral. Thanks again for the great dive experience!
Kaitlyn Caudill
23:28 10 Jun 25
Took their Lanai Cathedral dive excursion and it was a wonderful experience and would absolutely go diving with them again!
Bernardo Freitas
16:46 10 Jun 25
Amazing experience!
Jason Harris
17:12 09 Jun 25
Fantastic dive guide team and boat ride. Friendly, personable, and professional. Great dive spots and safety briefings. I did two excursions (two different days). First was the Molokini Crater two tank dive. Second day was the Lani Cathedrals two tank dive. Molokini Crater visibility was great. Dive guide pointed out a frog fish and octopus, in addition to some small reef sharks swimming by. Cathedrals was a new experience for me, diving through the lava formations and seeing the rare black coral. Very cool! The second dive for both excursions was a drift dive along the shore rock walls, where we saw eels, turtles, and lots of variety of fish.