REVIEW · OAHU
Waikiki Two Tank Guided Scuba Diving Adventure: Certified Diver
Book on Viator →Operated by Ocean Therapy Charters · Bookable on Viator
Two tanks, six divers, world-class sea life. This Waikiki charter from Ocean Therapy Charters takes certified scuba participants to reefs and historic shipwrecks along southern Oahu, right out of the Ala Wai Small Boat Harbor area. You’ll get PADI-led instruction and a max group of 6 travelers, which makes the whole day feel more hands-on than a big boat day.
I love how the small group cap keeps things calm and personal. I also love that the package covers the big stuff—tanks and scuba gear—plus water and snacks during the cruise—so you’re not spending time hunting rentals or counting extra costs.
The main consideration is eligibility: this outing is for certified scuba participants only. If you’re not certified yet, you’ll need a different program, and you should also be ready for it to depend on good weather.
In This Review
- Key Things You’ll Notice on This Waikiki Two-Tank Charter
- Waikiki Two Tanks: A Small-Group Day That Feels Easier
- What sets Ocean Therapy Charters up for success
- Getting Ready: Gear, Paperwork, and a Realistic Time Frame
- The physical side: plan for dock and gear work
- Boat Time in Waikiki: What You Eat, Drink, and Why It Matters
- Convenience factor: why Ala Wai works
- Two Underwater Sessions: Reefs, Historic Wrecks, and the Pace of Your Day
- What guidance usually changes for a certified participant
- Wildlife Highlights: Sea Turtles, Octopus, Dolphins, and Reef Sharks
- A special note on guide professionalism
- Price Check: Is $249 Worth It for a 4-Hour Two-Tank Day?
- When the price feels extra reasonable
- Who Should Book This Waikiki Charter (and Who Should Skip It)
- Should You Book the Waikiki Two-Tank Underwater Adventure?
- FAQ
- FAQ
- Is this experience for certified scuba participants only?
- How many people are in the group?
- How long is the experience?
- Where do we meet for the tour?
- What’s included in the price?
- Is parking included?
- What information do I need to provide for the equipment?
- What happens if weather is bad?
- Can I cancel for free?
Key Things You’ll Notice on This Waikiki Two-Tank Charter

- Max 6 travelers keeps the pace comfortable and the attention tight
- Two-tank plan gives you more than one underwater session on the same trip
- Ala Wai Small Boat Harbor means easy access from central Waikiki hotels
- All key gear included (plus tanks and weights) cuts your pre-trip planning
- PADI-led guidance helps match the underwater time to your skill level
- Wildlife checklist includes green sea turtles, octopus, reef fish, dolphins, and reef sharks
Waikiki Two Tanks: A Small-Group Day That Feels Easier

This is the kind of scuba outing that works because it stays small. With a maximum of 6 travelers, you’re not lost in a crowd, and your PADI instructor team can slow down—or speed up—based on your comfort in the water. That matters on a short, 4-hour experience, where every minute counts.
I also like the mix of sites being talked about ahead of time: reefs plus historic shipwrecks along the southern shores of Oahu. It’s not just about seeing fish. It’s about getting underwater experiences that have both natural life and human history attached, which keeps the day from feeling one-note.
You can also read our reviews of more tours and experiences in Oahu.
What sets Ocean Therapy Charters up for success
The meeting point is Ocean Therapy Charters at 1651 Ala Moana Blvd, Front Row Slip 65. From there, you’re operating out of the Ala Wai Small Boat Harbor area, which is one of the most convenient boating zones in Waikiki. In practical terms, you spend more of your day on the water and less time on long transfers.
And you’re not staring at a blank checklist. The experience is designed for certified participants, with guidance tailored to your pace and skill level. The tour also includes a solid wildlife set—green sea turtles, octopus, tropical reef fish, dolphins, and reef sharks—so you’re not wondering what the whole point is once you’re suited up.
Getting Ready: Gear, Paperwork, and a Realistic Time Frame
The trip is about 4 hours total, give or take. It’s set up for maximum efficiency: check in, gear up, cruise out, and then complete two tank sessions before returning to the meeting point.
Before you go, you’ll be asked for sizing and certification details. You should provide your height, weight, and shoe size so they can fit a wetsuit, BCD, and fins. You’ll also provide your scuba certification agency name, certification level, and cert number. This is one of those details that sounds admin-heavy, but it’s actually a comfort win—better fit usually means easier breathing and less fiddling when you’re already on the clock.
You’ll also receive a mobile ticket, and the company notes that service animals are allowed. The area is near public transportation, which is useful if you’re not planning on driving for the day.
The physical side: plan for dock and gear work
The experience lists a moderate physical fitness level. Translation: you’ll likely do some walking and handling of equipment around the harbor area, and you’ll need to be comfortable getting in and out of the water with a group. If you’re nursing an injury or you’re new to handling full scuba gear, it’s worth thinking through how you’ll manage that dock-to-water routine.
Boat Time in Waikiki: What You Eat, Drink, and Why It Matters

Between your underwater sessions, you’re on a boat, not stuck in transit. The package includes bottled water, sparkling water, juice, and pineapple during the cruise, plus snacks. That’s not just generosity. It’s practical fuel when you’re warm or dry one minute and wet the next.
Small touches like pineapple and juice also help keep the day from feeling like a workout schedule where you only think about food after you’re back on land. On a 4-hour outing, even a short break with snacks helps you stay calm and focused for the second tank session.
Convenience factor: why Ala Wai works
Ala Wai Small Boat Harbor is in the Waikiki zone. That matters because Waikiki is compact, so it’s easier to line up a meeting time around your hotel and still do a normal evening after. If your goal is to fit scuba into a short Oahu stay, this is the kind of location that keeps the day from swallowing your whole schedule.
Two Underwater Sessions: Reefs, Historic Wrecks, and the Pace of Your Day

This tour is built around two tanks, meaning you get two separate underwater sessions during the same 4-hour window. You won’t just do one short water time and then rush back. Instead, you’ll have the chance to see more than one site and to reset between sessions.
The described underwater setting includes vibrant reef areas and historic shipwrecks along southern Oahu. Shipwrecks can add structure to what you see underwater—more angles, more places for fish to gather, and often more visual variety than a flat reef. Reefs bring the animals you came for: turtles, octopus, and the steady rhythm of reef fish moving through the water column and hiding in the rocks.
What guidance usually changes for a certified participant
Because you’re certified, you’re not learning the basics from scratch. What you’re really paying for here is guided direction: matching your pace and skill level, staying with your group, and making sure you get to spend time where it’s worth your air and attention.
The tour also promises that the scuba session is guided by seasoned PADI instructors and that it’s personalized to your pace. In a small group of 6, that personal attention can make a real difference. You’re less likely to feel rushed, and you’re more likely to understand what you’re seeing while you’re seeing it.
Wildlife Highlights: Sea Turtles, Octopus, Dolphins, and Reef Sharks

The wildlife list is specific, which is a good sign. Here’s what you can look for based on the experience details:
- Green sea turtles: One of the best reasons to do Waikiki-area underwater time is the chance to watch them glide through reef areas.
- Octopus: If one shows up, it can be a slow, fascinating moment rather than a quick spotting.
- Tropical reef fish: Expect ongoing motion around reef structure.
- Dolphins: The tour description includes dolphins, so you’re not only scanning underwater.
- Reef sharks: They’re listed as a possible sighting. Even when they’re not constant, their presence can add a serious sense of scale to the trip.
A useful way to think about this: the guide can’t guarantee sightings of any wild animal, but having a plan that targets reefs and shipwrecks increases your odds. Also, being with a small group helps you stay aware of what’s happening around you rather than focusing on traffic of other divers.
A special note on guide professionalism
One booking highlighted a guide named Mike as a true professional, and it praised his ability to keep an Easter trip from canceling even when he had only one participant in the water. That points to something important for your expectations: the operation appears to be flexible enough to keep the experience moving rather than treating it as an all-or-nothing schedule.
Price Check: Is $249 Worth It for a 4-Hour Two-Tank Day?

At $249 per person, this isn’t a bargain-basement experience. But it includes a lot of what typically adds up in scuba planning: tanks, scuba gear, weights, bottled drinks, and snacks during the cruise, plus guided underwater instruction.
Here’s how I’d judge value from what’s included:
- You’re paying for two tank sessions in one outing, which stretches your time in the water compared to shorter one-tank trips.
- You’re not renting equipment separately, which saves time and hassle.
- Your group is capped at 6, so your instruction value per person is likely higher than a larger group setup.
The one cost item you should note is parking. Parking is not included, and the listing states parking is $1/hr. If you’re driving, factor that in. If you’re using transit or walking from a nearby hotel, you’ll likely feel less of the extra cost.
When the price feels extra reasonable
This price tends to make sense if you:
- want a small group rather than a cattle-call schedule
- value guided time and want help matching your pace
- don’t want to deal with gear rentals on top of the trip
If you’re budget-only and you don’t care about group size, then yes, you might find cheaper scuba options elsewhere. But within the framed package here, it reads like a focused, well-supplied outing.
Who Should Book This Waikiki Charter (and Who Should Skip It)

This is a good fit if you’re already certified scuba and you want a guided, small-group experience near Waikiki. It’s also a good fit for people who prefer a structured plan with two tank sessions and a guide who can shape the underwater time around your skill level.
You should skip it if:
- you’re not certified (the program is certified scuba participants only)
- you know you’d struggle with moderate physical activity around the harbor and equipment
- you’re traveling only during periods where weather risk would be a deal-breaker (the tour requires good weather)
It also fits solo travelers who don’t want to feel lost. In a small-group setting, your experience is more likely to feel like it has room for you rather than treating you as one of many.
Should You Book the Waikiki Two-Tank Underwater Adventure?

Book this if you want a short, well-packed Waikiki outing with a small group, two tank sessions, and instruction geared toward your pace. The combination of reefs and historic shipwrecks, plus a wildlife-focused route that includes green sea turtles and the possibility of reef sharks, gives you more than one reason to be excited once you’re underwater.
Skip it if you’re not certified or if you’d rather control your schedule around weather by doing something land-based instead. And if you do drive, remember that parking is not included and is listed at $1/hr.
FAQ
FAQ
Is this experience for certified scuba participants only?
Yes. This experience is only for certified SCUBA divers.
How many people are in the group?
The tour/activity has a maximum of 6 travelers.
How long is the experience?
It’s approximately 4 hours.
Where do we meet for the tour?
You meet at Ocean Therapy Charters, 1651 Ala Moana Blvd, Front Row Slip 65, Honolulu, HI 96815, USA. The activity ends back at the meeting point.
What’s included in the price?
Included are bottled water, sparkling water, juice, and pineapple during the cruise; scuba gear, tanks, and weights; snacks; and guided scuba tours.
Is parking included?
No. Parking is not included, and the listing notes parking is $1/hr.
What information do I need to provide for the equipment?
You should provide your height, weight, and shoe size for wetsuits, BCD, and fins. You also need your scuba certification agency name, certification level, and cert number.
What happens if weather is bad?
This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.
Can I cancel for free?
Yes. Free cancellation is available. You can cancel up to 24 hours in advance for a full refund.

























