Diving Maui’s Top Sites

Explore Molokini Crater, Lanai Cathedrals and More!

World-Class Dive Adventures

Maui’s enchanting marine realm promises unforgettable encounters with Hawaii’s most spectacular sea creatures. Explore legendary dive sites teeming with life, from dramatic lava formations to serene underwater caverns.

Molokini Crater

Join our most popular 2-tank dive charter and explore the world-famous Molokini Crater. After diving this stunning volcanic reef, continue your adventure along Maui’s shoreline, where you’ll often encounter sea turtles and vibrant marine life. Perfect for all skill levels, this Molokini dive offers an unforgettable underwater experience. Book your Molokini dive today and discover Maui’s top dive sites!

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Cathedrals At Lanai

Several times a month, we make the trip over to Lanai. Possible dive sites include the Cathedrals sites, Shark Fin, Lighthouse, and more!

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Small Groups. Big Ocean Adventures. Local Expertise.

“Highly professional and warm, friendly team. This starts at making reservations, waiver completion, the captain, crew, and dive team. Every touch point was outstanding and made for a great day diving. Would strongly recommend. ” - Ian via Google ★★★★★

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Why Choose Us

Welcome aboard the Maui Diamond, where we treat every guest like the gem you are! You’ve come to the right place for diving Maui’s top sites. We explore Molokini Crater, the stunning Cathedrals at Lanai, and many other dive locations around the island, offering unforgettable underwater experiences for all skill levels.

Our 46-foot custom-built dive boat provides plenty of space, a smooth ride, and comfort as you embark on your Maui diving adventure. Our experienced crew ensures every dive is safe, enjoyable, and memorable, whether you’re a beginner or a seasoned scuba diver. With top-of-the-line gear and knowledgeable guides, you can relax and focus on the beauty of Maui’s underwater world.

After each exhilarating dive, unwind on deck with breathtaking views of Maui’s coastline and crystal-clear waters. We create a welcoming atmosphere where divers from around the world can share stories, make new friends, and fully enjoy the magic of diving Maui.

If you haven’t joined us yet, we can’t wait to show you why Maui Diamond Sea Sports is the premier choice for diving Maui’s top sites. And for our returning divers—welcome back! Let’s go exploring the incredible waters of Maui together.

Choose your boat dives

Uncover Maui’s most spectacular and unforgettable boat diving experiences, where every descent reveals a world of wonder. From the iconic Molokini Crater’s thriving reefs to the dramatic lava formations of Cathedrals off Lānaʻi, each dive site offers something extraordinary. Glide alongside sea turtles, eagle rays, and vibrant tropical fish in crystal-clear visibility, or explore thrilling underwater caves and arches teeming with marine life.

Molokini Backwall (and 2nd site) Book Now

2 Tank Wild Card Book Now

Mala Pier + Pali Dive Adventure Book Now

Helldiver and Triple Anchors Book Now

Carthaginian Book Now

2 Tank Afternoon Charter Book Now

2 Tank Dusk and Night Dive Book Now

Molokini Double Backwall Book Now

Sunset Whale Watch Book Now

Taoquan Fu

22:27 17 Sep 25

Emily Guzik

06:36 14 Sep 25

Maui Diamond Sea Sports is the only scuba shop you should be diving with when you come to Maui. Getting to dive the cathedrals with them was a bucket list item for me, and I can say that it exceeded my expectations by far. From the professionalism and kindness of the crew, to the incredible wildlife we all got to experience. I can’t wait to come back and dive with you guys again. Thanks for a great trip!

Jacek O

06:48 12 Sep 25

Great time. Thank you guys. Recomended.

Rick Eiberg

00:00 12 Sep 25

I just got back from an amazing dive trip with the incredible captain and dive masters from Maui Diamond. We did a dive at Molokini and another off the coast of Maui that was just fantastic. The staff were friendly, knowledgeable, safety conscious and super helpful. I can't recommend a dive company more than Maui Diamond. Thanks for a great experience!!!!! Also, Beth, who answered the phone when I called to book the trip in advance, was spectacular and helped me make the best decision, which was to go with Maui Diamond.

Celal Mert Akcora

17:18 11 Sep 25

Kenneth Rosamond

20:57 10 Sep 25

Excellent dive outfit! I’ve dove with many across the Caribbean and Oahu and Maui Diamond is one of the few that consistently applies diver safety protocols. Detailed brief by the Captain before boarding, Divemasters hit the key points along with a lil extra about the dive sites, and roll call completed before making way from each dive site.

The vessel has a head and sink in its own room. They offer snacks including fresh banana bread and an assortment of canned drinks throughout the trip.

Finally, the staff. I enjoyed the company of Ben, David, Kim, Nick, Michele, Sam, Dave, Don, Beth, Brian, Joe & Greg across four excursions. They worked as a team assisting us throughout the day. Tips are well deserved. A big mahalo to you all!

Dean Bratman

17:37 10 Sep 25

Miranda Ward

02:07 10 Sep 25

Maui Diamond Sea Sports is absolutely incredible! From start to finish, the experience was seamless, professional, and so much fun. The crew went above and beyond to make sure everyone felt comfortable and safe while still keeping the energy upbeat and exciting. The boat was well-kept, the gear was in great condition, and the dive sites were breathtaking. We saw amazing marine life up close and learned so much thanks to their knowledgeable team.
If you’re looking for an unforgettable adventure in Maui, this is the company to go with. Highly recommend — we can’t wait to come back!

julian godwin

00:51 10 Sep 25

I had a great experience on this trip! Check-in and onboarding were smooth and simple, and the briefings were both informative and easy to follow. The crew Kim, Dave, David, Greg, and Captain Ben were all excellent, with Dave as our dive master. We visited Carthaginian and Mala, both really enjoyable sites with lots of life to see. Dave was especially helpful in pointing out species I hadn’t noticed before, including my first longnose hawkfish, which was a highlight of the dives.

I attached some photos Dave got on our dive as well. Highly recommend using Maui diamond for your next dive!

Rick Hutton

17:47 09 Sep 25

First time diving with Maui Diamond-crew was fantastic and went out of their way to make sure all of your needs were met. Beautiful boat, snacks, drinks and a sandwich…I will book with them again when I am back on Maui.

Catherine Johnson

18:28 08 Sep 25

My husband and I recently got recertified (got certified in the 90s) since we are new empty nesters. We had a 3 week holiday in Maui and did a few shore dives to get our mojo back with another dive company in Lahaina. We then booked a boat dive and after a pretty horrific boat dive and traumatic event (best left without details out of respect), we weren't sure if we would be able to find the nerve to get back in the saddle, as the saying goes. We decided to reach out to other dive companies and called Maui Diamond. We spoke to Rachel explaining the circumstances, our concerns, etc., and decided to give it a try again, and are SO glad we did. Every single touchpoint with Maui Diamond was 5 star, top notch: the booking process, the early morning check in with the Captain, the boat, safety checks, the 4 dive pros (shout out to Brian!). The crew made sure we were okay without making it a "thing". They had us laughing and the vibe on the boat was great, ensuring safety, and that all the divers were more than cared for. Buddies were assigned and they even had a plan if one buddy still had extra air and wanted to keep diving. Rachel even followed up, not with an automated email, but a personal one, checking to make sure we were okay. If you are looking to dive anywhere in Maui, do yourself a favor and don't look further... Maui Diamond is the place to book with! We'll be booking with them next August!!

Doug Reid

01:26 08 Sep 25

My two-tank private dive with Nick was absolutely incredible! His expertise truly made the day. At the 1st Cathedral, he captured stunning photos of me and the wildlife with the light beams creating a magical effect. The dive at Wash Rock was equally amazing, where he expertly pointed out a shark, a turtle, and rare sea life I would have missed.
Nick’s knowledge and experience are exceptional. He prioritized my safety, especially by navigating the potentially dangerous sea swells with skill. He is a fantastic guide—professional, knowledgeable, and passionate. If you want an unforgettable and safe dive seeing Maui's best, book a tour with Nick

Matthew DeOrio

23:47 07 Sep 25

Great company to dive with in Maui. Everything is contained on board. Professional crew sets up tanks and gear for you. Cleans gear on boat on return trip. Thoughtful and hardworking crew. Warm shower of water to clean salt out of your eyes, hair and mouth upon getting back on board after your dive. Plenty of snacks and drinks. Would surely dive with them again. Davis S was knowledgeable about the area, especially the small creatures below. Thanks for a memorable day!

Ekta Hutton

06:24 07 Sep 25

Fantastic team and crew. Friendly and efficient. I was a bit nervous about the harder dives but they kept be reassured and helped me greatly to get more comfortable under water. I also got lovely photos of my dives. Dave, David, Joe, Kim, Beth and the entire team were great. Highly recommend.

Ranata Wysatta

21:40 06 Sep 25

Maui Diamond Sea Sports has made me and my husbands trip memorable with the amazing spots that they have taken us to dive at. We have enjoyed chartering with the entire team even though only Joe was our dive guide on all occasions. They all contributed to caring for us and our gear awhile aboard. We can’t say enough about Maui Diamond other than, I highly recommend them for your diving on Maui. We have dove with them on several occasions and we will continue to use them for their knowledge and love of Hawai’i, diving, and ensuring the safety of all guests that they take out as well as making sure that we have fun in the process of it. Mahalo nui loa Nick, Beth, Dave, Carlos, and Joe from my Ohana to yours!

David Otis

08:49 06 Sep 25

Maui Diamond Sea Sports is by far the best of all the dive boats I’ve been on. No comparison. Very professional yet fun and relaxed. They do not miss a single step as far as preparation and safety while also making you feel welcome and glad to serve. And serve they do. Full briefings of the dive. Making sure you’re hydrated and not hungry. Very fun. Dave Fuller, Beth and all are the best

crystal davis

17:18 04 Sep 25

Great crew! So helpful and attentive. Had 2 great dives and felt like each diver was looked out for. The boat was comfortable, with plenty of snacks. Hot water rinse at the end of each dive. They took great care of my gear and me! #divewithdave

Anna Leigh Collier

19:02 03 Sep 25

Wonderful day scuba diving with Maui Diamond. We planned to go to The Cathedrals but the conditions didn't cooperate but we still went to Lanai and did 2 fantastic dives. The dive guides are very nice, knowledgeable, fun, and took some great photos of us underwater that we didn't have to pay for! Plenty of snacks and drinks on board and was kept very comfortable. Highly recommend.

G. Charles Dismukes

19:24 31 Aug 25

Stacey Austin

04:20 31 Aug 25

Absolutely AMAZING! As a beginner diver, they made everything so easy and comfortable. Don D. was a wealth of information (and bad jokes, lol) and Don C., my group's DM, was GREAT! We dove Molokini and He showed us alot of beautiful things and made the whole experience awesome! Would totally come back and dive with them again!

Thomas Marcinek

20:27 30 Aug 25

Great dive operation! Professional Captain and Crew. Our family of four did four dives over two days and we will dive with them again.

T M

20:24 30 Aug 25

Great Captain and Crew! Our family of four did 2 days/4 dives. Excellent service and gear. Dive briefs were detailed but not excessive. Lots of soft drinks, water and snacks. Roll call taken after each dive, to ensure all accounted for. Photos taken and shared. Boat was comfortable, busy but not overcrowded. We will definitely dive with Maui Diamond again!

Nada Aiouche

02:28 29 Aug 25

Great team! Everyone is happy, passionate and chill! They set up all the equipment for you, as they really want you to feel like you’re in holidays and enjoy your time! Enjoyed my dives with them and special credit to Michelle 🤙🏻

Irene Engels

17:52 28 Aug 25

My husband and I had the best time diving 6 days with the Maui Diamond team during our vacation!

Big shoutout to our DMs Kim, Ernie, Dave, and Nick who were absolutely wonderful and so much fun to dive with.
The entire crew + captains were so kind and accommodating.

We will definitely be back!

Basem Samuel

17:08 27 Aug 25

The entire crew were amazing. Professional yet friendly and funny. Would definitely recommend them to anyone looking for a great scuba experience.

Matt Greve

19:56 26 Aug 25

Great dive experience. The team did a fantastic job going over all of safety protocols, the dive plans, and dive instructions. They were very thorough and made it a great experience.

Randy Gimple

05:45 25 Aug 25

I’ve dived twice (so far) with Maui Diamond on their trips to Lanai. The entire crew was awesome. This is an extremely professional operation with captains and guides (like David, Dave, Nick, Beth and so many others) who are passionate about diving and devoted to assuring their guests have every opportunity to share that passion. Plus, the boat we had was perfectly designed. Plenty of space for divers, ample dry storage and really good banana bread and sandwiches. I’ve dived with dozens of companies and rank Maui Diamond among the best.

Justin Murphy

18:47 21 Aug 25

David, Dave, Ben, Kim and Don were wonderful. Best crew I have ever gone out with. Highly recommend you booking!!

JM & Eric Llorey

15:27 19 Aug 25

Maui Diamond is a fantastic boat and crew. They made my dive to Molokini Crater a great experience! Took care of all the little things so I could focus on enjoying the wonderful location. Mahalo!

Barbara Brignone

16:37 16 Aug 25

Very kind and super professional crew. Very organized. Wonderful experience. We did Molikini Crater and a second dive. Highly recommended!!!

J Hw

00:36 10 Aug 25

A good scuba tour company with nice and competent staff. I have done two trips with them, one to Lanai and the second to Molokini. Both trips went very well despite of the weather.

Stanley Johnsen

20:45 09 Aug 25

Thanks people for showing Cathedrals last Wednesday. Great dives and wonderful hosts!

Christina Reidy

23:53 08 Aug 25

Absolutely unforgettable 2-tank dive at Molokini Crater! We brought our three boys (18, 16, and 13), all newly certified divers who had just earned their certifications a few weeks before our Maui trip. From the moment we stepped aboard, the crew’s energy, experience and warmth set the tone for the day.

Our dive master, Ernie, was nothing short of exceptional—patient, calm, and incredibly knowledgeable. He guided our boys through every step, making them feel confident and comfortable in the water. The moment we descended, we were surrounded by crystal-clear blue, schools of colorful reef fish, and coral gardens that looked like something out of an aquarium .

Between dives, the captain and crew kept the atmosphere light and fun, sharing tips, stories, and a genuine passion for the ocean. Watching our kids surface grinning ear-to-ear after their very first ocean dives is a memory we’ll treasure forever.

Five stars aren’t enough—this team made our first family dive in Maui truly magical. We hope to be back again soon!

carolyn hieken

04:54 07 Aug 25

The Maui Diamond Team really makes this a special experience and because of them, this is the second time we have dove with Maui Diamond on our trips to Maui. The first time we dove with Maui Diamond our sons did discovery dives and they were hooked due to the enthusiasm of our captain and dive masters. We returned this year to find the same level of excellence. The knowledge of all the staff and love for what they do shines. The upbeat engaging instructions and introductions from Captain Don to the briefings and care of all of the dive masters. Today we did a two tank dive to Cathedrals of Lani. It is so worth it. The boat is sizable and room to spread out for the crossing. Other amenities on the Maui Diamond are excellent- gear, very comfortable ladders good for rough seas, lots of snacks and drinks (they joked they had a Costco aisle on the boat, they were right) and a clean, and for a marine head, a spacious bathroom. The crew also provided lunch since this was a 6 hour day. The dive masters before, during and after made sure we had everything we needed for a comfortable, but most importantly a safe dive. Our Divemaster Nick was very patient on the first dive as we got acclimated. He found amazing creatures such as the largest species of Eel in the world and guided us through thousands of other species and corals. The Cathedrals dive is especially interesting because it has unique cavern like structures and lots of swim through that refract the light into many colors. The captain and dive masters all helped each other and engaged with all the divers for fun conversation, very grateful to Don, Nick, Beth, Dave and Ernie. Dave also is an avid underwater photographer and shared some great shots with all of us. We are very grateful. We have dove others in Maui and all over the world. They are the best in the business. I would recommend booking multiple days of diving with them if you are planning more than one day of diving while in Maui. I also would recommend them for snorkel and combined Scuba as well as discovery dives (those trying it out before being certified). Truly appreciate the amazing day!

Melisa Restrepo

22:51 04 Aug 25

We had an amazing and unforgettable dive!! Every crew member was friendly, organized and knowledgeable. We felt safe and had so much fun! Shout out to Bryan, our dive guide!! Thanks so much and hope to dive again with you in the future.

Wendy Hales

22:25 01 Aug 25

My wife and 2 kids, 13 and 15, just got back from Maui, we went with the Maui Diamond, and it was excellent! We did 2 tank dives at the Lanai Cathedral 2 and Menpachi. Both dives were amazing! Brian was our dive master and he took very good care of us! The captain and the entire boat crew were amazing!! Highly recommend this company!! :) Loved the warm shower as we got out of the water.

Sebastian Beckett

23:33 29 Jul 25

Nick is the man and I’m so glad he led our group. Maui Diamond is top notch!

Erik Lisitza

23:15 29 Jul 25

The Maui Diamond team was outstanding!!! From Capt Ben to Newbie Nate and everyone else (both Dave’s), they do an amazing job. Professional, courteous and accommodating.

Special shout out to Kim for the excellent bottom time and eagle sharp eyes for critters.

I will be booking them again!!

Carla Pister

04:51 29 Jul 25

Dove molokini crater today with this crew and they were amazing. Kim was the dive master for myself and my son and she took extra care of me since it was my first dive and I was especially nervous about ascending safely…she took the time to do it with me one on one and let me go without her on the second ascent. Amazing first diving experience with my 18 year old son😎

Phez Phez

23:08 25 Jul 25

We went on the Molokini Crater and Cathedrals dives and both were excellent. The visibility in Molokini was incredible with so much to see and the Cathedrals were majestic, we made fantastic memories to treasure. The staff are what really made it, Brian was our guide on day one and Ernie on day two. Both my children are newly qualified divers and we felt in such safe hands with both guides, their experience shone through. Beth and Dave are also worth a special mention as such friendly and helpful staff. The boat was really well equipped with the latest diving gear and plenty of drinks and snacks. Such a wonderful experience on both days, would recommend to anyone.

Rafael J Munoz

00:59 17 Jul 25

Booked my scuba dive trip with Maui Diamond Sea Sport, was the best choice I made for my scuba trip to the Molikinu Crate in Maui, The trip was amazing, the boat is big, with drinks and snacks, the have everything planned and organize for you, you just show up, and scuba. The crew go above and beyond for you, so you can enjoy your dive to the max. I recommend this scuba center and give Maui Diamond Sea sport a 1000 stars

Alex Mihlstin

02:14 15 Jul 25

Second year in a row of incredible diving with a great company. Friendly and professional staff. Comfortable layout. All of the gear we needed was provided. Great stock of snacks and drinks aboard this boat! Amazing memories were made!

Don was our guide this time and he was great! His briefings were professional and he was a great leader through both dives. Dave went around from group to group underwater and took photos of us in action. This was truly the highlight of our trip. It allowed us to focus on the diving without managing a camera.

We highly recommend Maui Diamond to anyone and everyone!

Nemanja Jovanovic

04:18 30 Jun 25

Spacious boat, great crew, all well organized, Nitrox is available.
Maui Diamond Sea Sports saved my trip to Maui.
Came to dive with different company that cancelled dives and was lucky enough to get spot on Maui Diamond, not once but on two different days.
Crew was very professional, put emphasis on safety, boat was stable, food was tasty, and as they advertise, they do try to spoil clients.
As a cherry on the top, we were lucky to encounter whale-shark, a rare sight that I will remember forever.
Needless to say, for my future trips I now know with whom to book Maui/Lanai diving.

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.

Danae Valle

03:18 04 May 25

What a well organized top notch dive company everyone and everything was on point. I’ve been diving hundreds of times and it’s probably one of the nicest boats I’ve been on. It was a bit tight on space but everything was so organized and function extremely well my Dive Master Dave went above and beyond to make sure I had an amazing dive and I also took great pictures… I’m super careful with my air consumption and he took that into consideration and we had an extra long day while also making sure we were safe. We didn’t see a lot of things on our Dive* today, but he sure did a good job capturing what we did see I would definitely dive with this company again! Thanks _divewithdave_ for the photos