REVIEW · WAIKIKI & DIAMOND HEAD TOURS
Waikiki Snorkeling and Ocean Waterpark Adventure
Clear water, big fun, and easy snorkeling. That is what I like about this Waikiki outing, because you get a 55-foot double-decker catamaran with shaded seating and an onboard underwater viewing room, and you also get a real floating waterpark. I also love that the 35-foot slide and ocean jump platform give you something to do even before you hit the water. One thing to keep in mind, water clarity and marine sightings depend on conditions, so you cannot treat turtles as guaranteed.
I found the setup smart for mixed groups. You can stay dry and still watch fish in the underwater viewing area, then hop in when you feel ready, with multiple swim steps for safer entry and exit. The crew keeps things organized, and the boat has two restrooms, which makes a short two-hour tour feel way more comfortable.
The price is $73 per person, plus a $7 fuel surcharge, and taxes or fees may add more. For a two-hour trip that includes snorkel gear, snacks, drinks, and a water slide, it is solid value if you want an action-packed day without planning a complicated DIY snorkeling trip.
Key Points You’ll Feel on the Water

- 55-foot double-decker stability: spacious seating on upper and lower decks, with shade for break time.
- Underwater viewing room: watch sea life without getting wet, great for kids and hesitant swimmers.
- Snorkeling gear included: top-grade snorkel and safety gear so you can focus on the water, not shopping.
- 35-foot slide plus jump platform: the “ocean waterpark” part is not just for show.
- Snacks, drinks, and restrooms onboard: two restrooms and refreshments make the whole trip smoother.
Pricing and what you get for your $73

At $73 per person, this is not a budget-only snorkel boat, but it also does not feel overpriced for what you get. You pay for a large 55-foot catamaran experience, professional crew time, and actual water-park features like the slide, jump platform, and floating lounge mat.
Then there is the $7 fuel surcharge, and taxes and fees can add on top. So you should plan on a little more than the base price, depending on your final total at checkout.
The real value comes from the combination. Instead of doing only snorkeling, you get active time on the boat, a dry option to watch marine life, and multiple chances to enjoy the water. That matters in Hawaii, where weather can change and visibility can vary.
You can also read our reviews of more snorkeling tours in Oahu
From check-in to cast-off at Ala Moana

You meet at the yellow booth next to 1025 Ala Moana Blvd, Slip F06 in Honolulu. The rule is simple: show up 30 minutes before your reservation time and check in there.
This matters more than it sounds. The tour is weather dependent, and boats have to leave when the schedule works. The operator also notes that refunds are not issued if you miss the boat, so treat check-in time like part of the adventure.
Once you’re onboard, the boat’s layout starts working immediately. Shade is available on both decks, and you can get your snorkel gear ready without feeling rushed. That’s a small thing, but it changes the vibe from chaotic to calm.
55-foot double-decker catamaran comfort and shaded seating

A lot of snorkeling tours feel cramped. This one is designed to feel roomy, thanks to the 55-foot motorized double-decker build. There is shaded seating on both upper and lower decks, so you can alternate between sun time and break time without moving to a different boat.
That flexibility is great when you are with people who want different things. One person might want full sun and photos, while another just wants to relax and watch the water. The boat gives you both options.
You also get a glass-bottom style view experience through an onboard underwater viewing room, so the boat is not just a ride between swims. It is part of the show before you even get wet.
Glass-bottom underwater viewing room, dry or wet

Before you enter the water, you can observe marine life through the vessel’s built-in underwater viewing room. This is one of the smartest features for Waikiki conditions, because you can judge what is going on below while staying mostly dry.
It is also a practical tool for families or first-timers. You can keep kids occupied and engaged without turning the whole outing into a struggle. If you are the one who prefers snorkeling but hates cold water or choppy entries, this room gives you a backup experience.
Even if you plan to be in the ocean most of the time, I love having a “warm up” option. It helps you get your bearings fast and build excitement before your first swim.
Snorkeling where the crew selects the best conditions

The snorkeling itself is built around clear Hawaiian waters and native species. You can look for triggerfish, trumpetfish, sea turtles, and on some trips, dolphins. The snorkeling sites are chosen based on water clarity and current conditions, so the crew is actively working to give you a good chance.
Here is what I think matters for you: sightings can be amazing when water is calm and visibility is good, but the ocean is not a movie set. One participant noted that water was not very clear and they did not see turtles on their outing. That is the reality of snorkeling in any place, and it is why the crew’s site selection is so important.
What you get besides luck is structure. There are premium snorkel and safety gear included, and you enter and exit using multiple swim steps. That makes the physical part of snorkeling easier and more predictable.
Water playground time: 35-foot slide, jump-off platform, floating mat

The headline feature is the ocean waterpark setup. You get a 35-foot inflatable waterslide, an ocean jump-off platform, and a floating relaxation mat. That means the tour is not just “two hours of swimming.” It is a mix of active and restful ocean time.
The slide is an obvious draw, but I like the way it changes the energy of the group. Even if you are not sure you want to snorkel, the boat still feels like an experience. You can do slide time, watch others from the boat, then join snorkeling when you want.
The jump-off platform also gives adventurous swimmers a place to test their comfort with entries, flips, and dives if they choose. If you want to stay mellow, you can still hang out on the floating mat between swims.
Between all these options, this tour works well for mixed comfort levels. Not everyone has to be “all in” on snorkeling to enjoy the outing.
Snacks, drinks, and onboard restrooms that save your sanity

This trip includes complimentary snacks and drinks throughout the outing. That keeps energy up during active water time, especially if the sun is strong.
One review also mentioned a cocktail for adults over 21 as a fun finish. Your best bet is to treat drinks as included, and then be pleasantly surprised if the adult beverage setup shows up on your specific sailing.
Practical bonus: there are two restrooms onboard. For a two-hour tour, that can be the difference between feeling relaxed and feeling stressed. It is also one more reason the trip feels family-friendly in logistics, even though swimming rules still apply for small kids.
Crew professionalism and safety rules that keep things smooth

The crew is trained by the owner and brings long ocean sports experience. The tour emphasizes safety and comfort, and it shows in how they manage water access.
The safety rules are direct. Guests who are intoxicated or under the influence are prohibited, and the captain can deny service at their discretion. That is exactly what I want to hear on a boat that includes a slide and open water activities.
Crew friendliness also matters here. The trip is guided, and people report that the staff are approachable with questions. That is important when you are adjusting snorkel gear, learning water entry steps, or deciding whether you want to slide versus just float and watch.
What to bring: simple gear, real sun protection

You do not need to overpack, but you do need to show up ready for the sun and saltwater.
Bring:
- Passport or ID card
- Sunglasses
- Swimwear
- Towel
- Sunscreen
- Beachwear
If you can, apply sunscreen before you board, or at least early. Reapplying at sea can be harder, and the boat has sun on both decks. Also, bring sunglasses that can handle splashes since you will be around water the whole time.
If you are prone to sunburn, pack extra sunscreen. Hawaii sun moves fast.
Who this fits best, and who should rethink it
This is best for people who want action plus marine life, but not a long, exhausting excursion. It is a good match if you are:
- A snorkeler who wants included gear and a structured water route
- A family that includes kids who may want dry viewing options
- A mixed group where not everyone wants to snorkel at the same intensity
There are also clear limits. The tour welcomes children 3 and under on the boat, but they must stay with a guardian at all times, and they may not enter the water during the snorkeling portion. Babies under 1 year are not suitable, and people over 95 years are not suitable.
If you are traveling with someone who is nervous about entering the ocean, the underwater viewing room and multiple swim steps help. It is a less intimidating way to experience Waikiki marine life.
Weather changes everything in Waikiki
Trips are weather dependent, and that affects snorkeling clarity and how comfortably the boat rides. On a calm day with clear visibility, it can feel like the ocean is cooperating.
On a day with lower clarity, you may still have fun with the slide, jump platform, and floating mat, but you might see fewer fish or no turtles. That is not a failure of the tour, it is just ocean conditions.
If you are going on a trip with other tight plans, keep your schedule flexible. Two hours goes by fast, but the water part is the main event, and you want the ocean to be on your side.
Should you book this Waikiki catamaran adventure?
I would book it if you want a two-hour Waikiki outing that mixes snorkeling with true ocean playground time. The 55-foot double-decker layout, onboard underwater viewing room, included snorkel gear, complimentary snacks and drinks, and two restrooms all point to a trip built for comfort, not just speed.
I would think twice if your top priority is guaranteed sea turtle sightings, or if you only want snorkeling and you dislike slide-and-platform energy. The marine-life part depends on conditions, and one participant did not see turtles when the water was not very clear.
But if you like options, shade breaks, included gear, and the chance to watch sea life without getting wet first, this is a strong choice. It is fun, practical, and it gives you multiple ways to enjoy Hawaii’s ocean in one short trip.
FAQ
How long is the tour?
The tour duration is 2 hours.
Where is the meeting point in Honolulu?
Meet at the yellow booth next to 1025 Ala Moana Blvd, Slip F06, Honolulu, Hawaii.
What time should I arrive for check-in?
Please meet 30 minutes before your reservation time to check in at the booth.
What snorkeling gear is provided?
You get top-grade snorkel gear and premium snorkeling and safety gear.
What marine life can I expect to see?
You may see triggerfish, trumpetfish, sea turtles, and occasionally dolphins. Site selection depends on water clarity and conditions.
What activities are included besides snorkeling?
The tour includes a 35-foot inflatable water slide, an ocean jump-off platform, and a floating lounge mat.
Is there an underwater viewing area on the boat?
Yes. There is a built-in underwater viewing room so you can watch marine life without getting wet.
Are restrooms available onboard?
Yes. There are two restrooms onboard.
What should I bring?
Bring a passport or ID card, sunglasses, swimwear, a towel, sunscreen, and beachwear.
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