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Scuba Diving Maui & Lanai
At Extended Horizons, we offer unparalleled scuba diving experiences in Maui and Lanai, combining expert instruction with eco-conscious exploration. Our commitment to small group sizes ensures personalized attention, with a 4:1 diver-to-instructor ratio for all guided dives. Certified by the National Association of Interpretation, our instructors are trained naturalists who provide deeper insights into marine ecosystems, animal behaviors, and underwater environments. We pioneered eco-friendly operations in Maui by running our shop on 100% solar power and powering our boat with Hawaii-made biodiesel. Recognized by National Geographic Society and NautilusLive.org for our #shoretoabyss 2022 Expeditions, we blend adventure with conservation.

Our guided dives span renowned sites like Lanai Cathedrals and Mala Pier, alongside lesser-known treasures for certified divers. We offer comprehensive PADI and SDI certification programs, shore dives, boat dives, night dives, and wreck dives tailored to all skill levels. Our facility, located near Kaanapali Resorts, consistently ranks as the top scuba charter on Mauis west coast. We prioritize simplicity through easy scheduling, slow-paced dives, and transparent communication. With over 30 years of combined experience, our team delivers unmatched expertise in marine education and underwater exploration. Every dive supports ocean conservation initiatives, reflecting our mission to protect the ecosystems we explore.
Services
Scuba Lessons Boat Dives Shore Dives Night Dives Conservation Courses Eco Dives
Highlights and features
  • We maintain a 4:1 diver-to-instructor ratio for all guided dives.
  • Our instructors are certified naturalists with deep marine expertise.
  • We operate 100% on solar power and biodiesel fuel.
  • Recognized by National Geographic Society for ocean exploration.
  • We offer access to Maui's most exclusive dive sites.
Associations and certifications
  • National Geographic Society
  • NautilusLive.org
  • National Association of Interpretation
What people say
Small group ratios Expert instructors Eco-conscious operations Unique dive sites Excellent certification process
Services
Scuba Lessons
We offer PADI and SDI-certified scuba lessons for beginners to advanced divers. Our small-group instruction ensures personalized attention. Courses include pool training, open water dives, and specialized certifications.
Boat Dives
Explore remote dive sites like Lanai Cathedrals and Carthaginian wreck. Our boat dives accommodate up to 12 divers with 3 instructors. Includes gear, tanks, and eco-guided exploration of marine ecosystems.
Shore Dives
Guided shore dives at Black Rock and Mala Pier. Ideal for all skill levels, with naturalist instructors pointing out marine life behaviors. Includes equipment rental and safety briefings.
Night Dives
Experience bioluminescent marine life and nocturnal ecosystems. We provide waterproof flashlights and specialized guidance. Limited to 8 divers per session for safety and visibility.
Conservation Courses
Participate in marine research and reef restoration projects. Courses combine diving with citizen science. Includes training in coral propagation and underwater data collection techniques.
Questions
What scuba certifications do you offer?
We provide PADI and SDI certifications for open water, advanced, and specialty courses.
Are night dives available?
Yes, we offer guided night dives with specialized equipment for small groups.
Do you accommodate beginner divers?
Absolutely. Our 4:1 instructor ratio ensures personalized training for all skill levels.
What conservation initiatives do you support?
We participate in reef restoration, marine research, and eco-diving education programs.
How far in advance should I book?
We recommend booking at least 2 weeks ahead for popular dive sites and dates.
Is gear rental included?
Yes, all necessary diving equipment is included in our dive packages.
Videos
Reviews (5)
Bill M.
Feb 05, 2022 Report
They are great bunch of people. Are dive master was awesome he was so helpful to my wife who was only doing her second ocean dive. I would high recommend these group.
Greg H.
Feb 01, 2022 Report
We had two fantastic dives near Lanai with this scuba group. We loved our instructor Shelby. She was incredibly informed and wonderful at finding sea creatures. We particularly loved the dive site Second Cathedral, but Secret Cove was breathtaking as well. I have dove with many scuba groups and would highly recommend this group. They provide a truly top notch experience!
Pete Cronin
Jan 16, 2022 Report
I only rented tanks and weights for Extended Horizons, but they were very kind, helpful, and accommodating. We were late getting the tanks back luckily, they were still at the shop cleaning up and didnt mind at all. They even offered their wash station for our personal gear. I felt bad for keeping them late and declined the offer, but was very impressed by their kindness!
Patti D.
Dec 18, 2021 Report
As much as I hate giving this rating, it is deserved. I signed up to get scuba certified. It was such a bad experience. I do not like being in the water when it isn't clear, who does? To try and do the things necessary to get certified, in that situation, is never good. It was a recipe for disaster. I had to walk away without completing my certificate, was unable to get a full refund and not offered an option to work with another instructor during my time on Maui. I did ask. It's such a shame.....and also, Erik, shame on you for not trying to help a person trying to get certified!
Beverly P.
Dec 11, 2021 Report
I was very impressed with my boat dive with Extended Horizons. It was expensive, but the experience was first rate. It wasn't the typical cattle car I've experienced on other boat dives when divers are jammed together shoulder-to-shoulder. There were only 7 divers, including myself. So it was very comfortable. And our instructors, Victoria and Shelby were expert naturalists. During the trip to our dive locations they hoisted a thick photo album to show us some of the fish, macro invertebrates and other species we might see on our dive. They also knew about the feeding, breeding and