Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
Maui, Hawaii
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Tour Overview

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

About

A Natural Cathedral Experience: Sculpted by Time

The Lanai Cathedrals are a testament to Mother Nature’s artistry. Volcanic eruptions sculpted the landscape, leaving behind lava tubes that flowed into the ocean thousands (or even tens of thousands) of years ago. Over time, the roofs of these tubes partially collapsed, creating the dramatic caverns we see today. Sunlight filtering through cracks and openings in the ceiling bathes the interior in an ethereal glow, making you feel like you’ve entered a submerged cathedral – a truly awe-inspiring sight for divers of all experience levels.

On the way across the channel, keep your eye out for dolphins  – this is the trip where you’re most likely to get to see some on the way to or from the island of Lanai. Once we get to Lanai, the captain will choose the day’s sites based on conditions and other local boat traffic. Prepare to experience great swim throughs and underwater ledges as well as some fish we don’t get to see at our regular Maui locations.

Important Note:  Though it is our intention to dive at least one of the Cathedrals sites, ocean conditions may mandate that we choose alternate sites.  Your safety is our priority, so keep an open mind; in the uncommon event that we cannot dive one of the actual “cathedrals”, we WILL introduce you to some other excellent dive sites!

A Diver’s Paradise: Explore the Variety of Lanai’s Dive Sites

While the Cathedrals are the crown jewels, Lanai offers a treasure trove of other dive adventures and diving these sites is just as much of a treat for our crew as it is for you!

  • Swim with the Colorful Cast of Characters at Fish Rock: Imagine darting through vibrant coral reefs teeming with butterflyfish, angelfish, and Moorish idols. Fish Rock is a photographer’s paradise, bursting with life and color.
  • Salute the Sea at Sgt. Major: The vibrantly colored sargeant major fish (mostly yellow/white with black stripes) is endemic to Hawaii and is the most common damselfish in the islands. That said, Hawaii is known to have a variety of these damsels, from the indo-pacific version, to a mix of the two versions! Keep an eye out for playful octopus and shy reef sharks as well!
  • Discover Hidden Gems at Shark Fin:  Sharks? Maybe not; the dive site is named after the lava “fin” sticking out of the water at this location. Explore coral encrusted pinnacles teeming with colorful marine life and a really interesting underwater seascape.
  • Unearth the Secrets of Menpachi Caves: This labyrinthine lava tube is a haven for curious divers. Weave through swim-throughs and discover a hidden world teeming with lobsters, eels, and fascinating crustaceans.
  • A dive site called No Name:  When the conditions are just right, we can dive the inside of a blow hole, locally known as Thunder Dome, before continuing to explore nearby walls and pinnacles.

These are just a few of the incredible dive sites waiting to be explored off of Lanai. With crystal-clear waters, diverse marine life, and unique geological formations, Lanai offers an unforgettable underwater experience for every diver.

Ready to embark on your own underwater adventure?

We have light snacks on board, as well as juice, soda and water, and on this longer charter, we also serve lunch. Since this is a longer charter, divers are welcome to bring additional food, as long as it fits on their under-bench dry storage.

Note: If it has been more than two years since your last dive, the Maui Diamond requires that you take a guided dive or a refresher ahead of time or hire a private guide for your boat dives.

Do you need rental gear? No problem! We can provide you with a BCD and regulator (and whatever else you may need) for just $30.

DIVER MEDICAL FORM REQUIRED: All certified divers are required to complete a medical history form and some will be required to obtain their physician’s release to participate in scuba diving. Here’s a link to the form for easy reference and in case it’s needed for a doctor visit. Divers who are required to obtain a medical release to dive and who show up without one will be welcomed aboard as passengers but will not be able to dive and will not be refunded. We’d rather get to take you diving, so please get this done!

The Small Print:
Though we are planning to dive Lanai, Mother Nature is the ultimate boss of what we do. Should we find ourselves in conditions that do not allow us to safely dive at Lanai, we will find another more appropriate site or two and take it from there. We will not issue refunds if we find that the weather will not permit us to dive at a certain site. We WILL issue refunds for the cost difference between this charter and the one we actually end up doing if the price is less. Got questions? Just ask!

Timing

6:15am • 8 Hours (approx.)

Check in is at 6:15 in the morning and we return to the harbor between 2pm and 3pm.

Pricing

US$269 Certified Divers Must be certified.
US$169 Passenger Ages 10 and up – Not entering the water.

ticket

Make a booking
808-879-9119

Call to book or message us for more info.

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.