REVIEW · OAHU
Waikiki Two Tank Guided Scuba Diving Adventure: Certified Diver
The ocean is Waikiki’s best escape. This four-hour outing takes certified scuba divers from Ala Wai Small Boat Harbor to reefs and wreck sites along Oahu’s south shore, with a maximum of six people per boat. I like the small-group format, which should give you more personal attention, and I like that the trip includes tanks, weights, equipment, drinks, snacks, and a guided underwater experience. The main consideration is simple: you must already hold a scuba certification, and sea conditions can change the plan.
I also appreciate the practical setup. The harbor sits near Waikiki hotels, and the operator asks for your height, weight, shoe size, certification agency, level, and certification number ahead of time. One especially encouraging detail comes from a one-person outing with Mike on Easter, when he kept the trip running rather than canceling. That suggests a personal, flexible approach, though the available rating is based on only five reviews.
Key points to know before booking

- Small groups of six or fewer: You get a better chance to ask questions and receive attention from the divemaster.
- Two-tank format: The four-hour schedule is built around two guided underwater sessions along southern Oahu.
- Possible wildlife sightings: Green sea turtles, octopus, reef fish, dolphins, and reef sharks may appear, but no animal sighting is guaranteed.
- Convenient Waikiki departure: Meet at Ocean Therapy Charters, Front Row Slip 65, at Ala Wai Small Boat Harbor.
- Equipment and refreshments included: Tanks, weights, scuba gear, bottled and sparkling water, juice, pineapple, and snacks are provided.
- Certified divers only: You must provide certification details before the trip, and a moderate level of physical fitness is expected.
Why this Waikiki scuba trip catches my eye
Waikiki is famous for beaches, hotels, and sunset cocktails. Its underwater side is quieter and far more rewarding for certified scuba divers who want time below the surface rather than another crowded shore excursion.
Ocean Therapy Charters keeps this outing intentionally small. Six people is the maximum, and the group may be smaller. That matters underwater. You are not trying to keep track of a large cluster of fins, and the guide can pay closer attention to your pace, comfort, and air use.
I also like the balance between structure and flexibility. You have a four-hour window, two tanks, a professional guide, and a boat departure from central Waikiki. At the same time, the exact sites can be adjusted to local conditions and the group’s ability. That is the right approach for ocean activities, where wind, current, visibility, and boat traffic can affect the day.
The one clear limitation is the certification rule. This is not a lesson or a first-time underwater introduction. If you have never been certified, you need a separate discovery scuba program. You should also be comfortable with the physical demands of entering the water, swimming with equipment, and managing yourself underwater.
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Meeting at Ala Wai Small Boat Harbor

The trip begins at Ocean Therapy Charters, located at 1651 Ala Moana Boulevard, Front Row Slip 65, Honolulu. The meeting point is at Ala Wai Small Boat Harbor, right beside the Waikiki and Ala Moana hotel area.
That central location is useful if you are staying nearby. You can reach the harbor by public transportation, and the meeting point is near major resorts. Parking is available, but it costs $1 per hour, so factor that into your budget if you are driving.
Before you arrive, the operator needs your height, weight, and shoe size. This information helps prepare your wetsuit, buoyancy compensator, and fins. You also need to supply your scuba certification agency, certification level, and certification number. Give accurate details when booking, since the crew needs to know what equipment and supervision are appropriate.
Allow enough time to find Front Row Slip 65 without rushing. Boat harbors can be less obvious than hotel lobbies, especially if you are carrying personal gear. The stated end point is the same as the start, so you return to the harbor after the outing.
What the four-hour schedule means

The full activity lasts about four hours. That time includes meeting at the harbor, preparing equipment, traveling by boat, completing the two underwater sessions, and returning to the dock.
The two-tank format gives you more than a quick sample of Oahu’s underwater scenery. One underwater session can feel too brief once you account for gear checks and getting comfortable. Two tanks allow the crew to visit more than one site or spend time in different parts of the same area, depending on conditions and the guide’s plan.
The exact sequence is not specified, so you should not book this expecting a named wreck or reef on a guaranteed schedule. The boat works along the southern shores of Oahu, and site choice can depend on the day’s conditions. That flexibility is a benefit when the sea changes, but it also means the final route may not match your preferred target.
Between the two sessions, you may have time to rest, drink water, and take in the shoreline views. Bottled water, sparkling water, juice, pineapple, and snacks are included. These are small touches, but they help during a physical morning or afternoon on the water.
Reefs, wrecks, and what you may see below

The main appeal is the chance to explore reefs and historic shipwrecks off Honolulu. Reefs offer colorful fish and changing shapes in the water, while wreck sites provide a different kind of setting, with structure for fish and plenty for you to examine.
Green sea turtles are among the most appealing possible sightings. Hawaiian green sea turtles are protected animals, so you should give them space and let the guide set the pace. The same patient approach applies to octopus, which can be easy to miss because they blend into their surroundings.
The wildlife list also includes dolphins and reef sharks. Treat these as possible encounters, not promises. Ocean animals follow their own schedule, and visibility or site conditions may limit what you see. A good day is not measured only by a long list of animals. Quiet time over a reef, a clear view of a wreck, or a calm, well-managed underwater session can be just as worthwhile.
The presence of a divemaster or instructor is especially useful at sites where there is more to notice than you can take in at a glance. A guide can point out marine life and help you stay with the group. Since the maximum is only six people, you should have a better chance of hearing and following those directions than on a large boat with a crowded roster.
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How the small group changes the experience

A six-person limit is one of the strongest reasons to consider this trip. Small groups usually make the pace easier to manage, and the guide can learn what each person needs during the outing.
The operator says guides adjust the experience to your pace and skill level. That does not remove your responsibility as a certified diver, but it can make the day more comfortable if your certification is recent or you have not been underwater for a while.
It also helps if you want to ask questions. You can clarify equipment, site conditions, or marine life without trying to catch a guide’s attention across a crowded deck. For newer certified divers, that extra contact can be reassuring. For experienced divers, it may make the trip feel less like being moved through a standard group route.
Small groups are not a guarantee of a private boat. The maximum is six, and other certified divers may join you. Still, the format is much more personal than a large excursion.
One review gives the format a useful real-world example. Mike guided a one-person outing on Easter and did not cancel. The diver described Mike as a true professional and especially praised the one-on-one attention. That is a strong point in the company’s favor, though one excellent report cannot predict every departure or guide pairing.
Equipment, comfort, and physical demands

The price includes dive gear, tanks, and weights. You still need to provide your size information in advance so the crew can prepare the correct wetsuit, buoyancy compensator, and fins.
Because you are using supplied equipment, inspect the fit before leaving the harbor. Your mask, fins, and buoyancy equipment should feel comfortable, and you should tell the crew promptly if something does not fit. A small adjustment on the boat is better than an uncomfortable session underwater.
The operator asks participants to have a moderate level of physical fitness. That requirement is worth taking seriously. You will handle scuba equipment, move around a boat, enter the water, swim, and complete two underwater sessions. The listing does not give a specific age, medical, or swimming rule, so contact the operator if you have a health concern or question about your ability.
Service animals are allowed, and the location is near public transportation. No other accessibility details are provided, so you should ask Ocean Therapy Charters directly about boarding and boat access if you need specific assistance.
Is $249 a fair price?

At $249 per person, this is not a bargain-basement harbor outing. The value comes from what is bundled into the four-hour schedule: two tanks, weights, scuba equipment, a guided boat trip, a small group, drinks, pineapple, and snacks.
The small-group limit is the key price factor. If you are paying for close guidance rather than the lowest possible rate, six or fewer people makes the cost easier to justify. You are also paying for the convenience of leaving from central Waikiki instead of arranging your own boat transport or renting each piece of equipment separately.
The value is strongest for a certified diver who wants a simple, organized outing. You do not need to bring tanks or weights, and you return to the same harbor. The value is weaker if you already own a full setup, prefer a large group at a lower price, or mainly want a guaranteed encounter with a particular animal or wreck.
Remember the extra parking charge of $1 per hour if you drive. That is minor beside the tour price, but it is still an avoidable surprise if you arrive by car.
Who should book this outing?

I would recommend it most strongly to a certified diver staying in Waikiki who wants a guided boat outing without a large group. It suits divers who enjoy reefs, wrecks, and the possibility of seeing turtles or other Hawaiian marine life.
It is also a sensible choice if you value personal attention. The guide can adjust the pace and skill level, and a group of six or fewer is easier to manage than a full boat. The positive account of Mike’s one-person Easter trip adds confidence for solo participants, although you should not assume every departure will be private.
You may want another option if you are not certified, are uncomfortable with moderate physical activity, or need detailed accessibility support that has not been confirmed. First-time participants should choose a discovery scuba program instead.
I would also think twice if a specific site is your top priority. This trip promises access to reefs and wrecks along southern Oahu, but the exact locations are not fixed in the information provided. Ask the operator about likely sites on your date if you have a particular wreck in mind.
Booking, cancellation, and weather details
Confirmation arrives when you book, and the experience is offered in English. It is often reserved about 24 days ahead, so booking early is sensible if your Waikiki dates are fixed.
You can cancel for a full refund up to 24 hours before the start time. Cancellations or changes made inside that 24-hour window are not accepted for a refund, and the cut-off uses local time.
The trip needs suitable weather. If poor conditions force a cancellation, you can choose another date or receive a full refund. The operator also requires a minimum number of participants. If that minimum is not met, you will be offered another date or experience, or receive a full refund.
My verdict for certified Waikiki divers
I would book this trip if I wanted a compact, guided look at Oahu’s south-shore reefs and wrecks, especially from a Waikiki hotel. The strongest reasons are the six-person limit, included equipment, two-tank format, and the chance to receive close attention from a professional guide.
Go in with realistic expectations. Marine life is never guaranteed, the exact sites may change, and this is not a certification course. If you are certified, reasonably fit, and value a relaxed small-group setting, $249 is a fair price for the convenience and personal guidance. If you are new to scuba, choose the beginner program instead.
FAQ
Is this experience for certified scuba divers only?
Yes. This outing is for certified scuba divers. You must provide your certification agency, certification level, and certification number.
How long does the experience last?
The activity lasts about four hours.
How many people can join the trip?
The maximum group size is six people.
Where does the boat leave from?
The trip starts at Ocean Therapy Charters, 1651 Ala Moana Boulevard, Front Row Slip 65, at Ala Wai Small Boat Harbor in Honolulu.
What is included in the price?
The price includes scuba gear, tanks, weights, guided tours with a divemaster, bottled water, sparkling water, juice, pineapple, and snacks.
Is parking included?
No. Parking costs $1 per hour.
What information do I need to provide before the trip?
You need to provide your height, weight, shoe size, scuba certification agency, certification level, and certification number.
What happens if weather cancels the trip?
If poor weather causes a cancellation, you can select a different date or receive a full refund.
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