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Contact Us

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Maui Diamond Sea Sports

Thank you for visiting the official website of Maui Diamond Sea Sports.

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101 Maalaea Rd Slip 23,
Wailuku, HI 96793

Contact us for our mailing address.

phone

Call us between 8am - 5pm (HST)
808-879-9119
info@mauidiamond.com

Hours of Operation

Our daily charters typically check in at 6:15 AM.
Our daily telephone hours are 8:00 AM – 5:00 PM
Reservations can be made on this site 24 hours a day!

Closures

It does not happen very often but there are a few times a year that we give the team a day off. We are closed on the following days of the year (unless you make us an offer too good to refuse!):

  • Thanksgiving Day
  • Christmas Day
  • New Year’s Day

We are located at Maalaea Harbor, Slip 23. To find us with your GPS, you can key in 101 Maalaea Harbor Road, which will actually take you to the Harbor Master’s office! Before you get there though, you’ll see boats in their slips. The Maui Diamond is located along the land side of the harbor at Slip 23.

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    Maui Diamond Sea Sports
    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.