Reviewed · TOURS IN OKINAWA
From Naha Scuba Diving Trip in Kerama(for certified divers)
The clear water around the Kerama Islands is the main event here. From Naha, you ride a speedboat to Kerama National Park, then make two guided scuba descents among coral, turtles, reef fish, and possibly larger marine life. The third descent is optional, so you can keep the day moderate or add more time underwater.
I like the small group of up to four people, which gives the guide room to watch everyone closely. I also like the practical package: hotel transfers in selected areas, equipment, insurance, English or Japanese instruction, and underwater photos are included. Guides such as Ryuta, Yun, and Utah have been praised for calm, friendly support.
The main drawback is the long day on a boat, with roughly an hour each way to the islands and lunch not included. Conditions can also mean a changed site or cancellation. Check the pickup area carefully, bring food and a towel, and request the right wetsuit size before leaving shore.
Kerama’s clear water is worth the early start

This is an eight-hour outing built around two boat descents in Kerama National Park. You leave Naha early, cross open water by speedboat, and spend the middle of the day exploring several underwater sites before returning to port in the afternoon.
Kerama is known for excellent visibility, and the supplied experiences describe water so clear and blue that the reef can feel close even before you enter it. The sights can include fluorescent fish, coral, sea turtles, reef sharks, small caves, and large trevally moving around schools of smaller fish. Marine life is never guaranteed, but the setting gives you a strong chance to see a lively reef.
This is not a sightseeing cruise with a quick swim. You need recognized scuba certification, reasonable fitness, and comfort in open water. The guide is with you during the underwater portions, but you remain responsible for having the certification and ability required for the activity.
What the $206 price really covers

At $206 per person, the price is reasonable for a full day that includes the boat ride, two guided boat descents, equipment rental, insurance, hotel pickup and drop-off in selected areas, and underwater photos. Buying those pieces separately would usually make the day harder to arrange and less predictable.
The included photos are especially useful. SEAKERS sends underwater images and videos after the outing, giving you a record of the reef and marine life without needing to handle a camera underwater. The quality and style of the images can vary, but this is a useful extra for anyone who wants more than a memory card full of blue water.
Two important costs are outside the base price. A third descent costs 5,500 yen in cash. A dive computer costs 1,500 yen in cash, unless you receive it free in exchange for a positive review. I would treat the computer charge as part of your real budget if you want to use one, rather than assuming it comes with the standard equipment.
Lunch and drinks are also not included. You spend time eating on the boat, but you need to bring a packed lunch and your own drinks. That detail matters because the morning begins early and the boat schedule leaves little time to buy food.
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The 6:45 pickup and morning briefing

Pickup begins around 6:45 a.m., with drop-off expected around 3:30 p.m. The stated service areas include Naha, Urasoe, and limited locations in Ginowan. Pickup is not available throughout every part of those cities. In Naha, Akamine and Shuri are excluded, while Ginowan service is limited to Laguna Garden Hotel, Okinawa Prince Hotel, and Moon Ocean Ginowan Hotel and Residence.
You wait outside your accommodation entrance at the agreed time. If you stay in an Airbnb, give the exact location through the registration form sent after booking. This is not the kind of morning where arriving late works well. Missing the scheduled meeting point can be treated as a no-show.
The first formal part of the morning is a roughly 45-minute safety briefing and equipment setup. The guide explains the boat procedures, checks the gear, and gives the underwater briefing before departure. English and Japanese instruction are available, and the English-speaking guides are there to make the process clear rather than rushed.
This preparation is one of the strongest parts of the day. A good briefing gives you time to ask about equipment, hand signals, entry procedures, and the planned sites. Reviews of the guides describe Ryuta, Yun, and Utah as friendly and attentive, with particular care given to helping participants feel safe and relaxed.
The speedboat crossing to Kerama National Park

The boat leaves at about 7:45 a.m. and takes roughly an hour to reach the Kerama Islands. The crossing is part of the cost, but it is also the portion most likely to test anyone prone to seasickness.
Bring only what you need. Oversize luggage, large bags, and extra suitcases are not allowed. Pack a change of clothes, towel, flip-flops, lunch, drinks, and your certification. Keep your belongings compact and easy to manage around the boat.
The schedule aims for a first underwater session at about 9:00 a.m. This timing gives you a useful amount of daylight and leaves room for a second session before lunch. Boat times and site plans can change with weather, sea conditions, or local operating decisions, so treat the clock as a guide rather than a promise.
If weather makes the planned site unsuitable, SEAKERS may arrange another site at no extra cost. If no suitable option is available, the activity can be canceled with a full refund. That policy cannot control the weather, but it does reduce the risk of paying for a day that cannot safely run.
The first two underwater sessions

The first session is scheduled for around 9:00 a.m. in Kerama National Park, followed by a second around 10:30 a.m. Together, the two sessions form the core of the trip and are included in the $206 price.
The actual sites vary. Specific outings have visited Nosaki, Doma, and Kameku, while other participants explored reefs, small caves, and several different locations. That variety matters. You are not simply repeating the same view twice, and changing sites can give you different coral formations, fish, and chances to spot turtles.
The visibility is one of the biggest reasons to choose Kerama. Clear water helps you see farther across the reef and makes the colors of fish and coral easier to appreciate. Reports from the activity include fluorescent fish, turtles, reef sharks, and large trevally around schools of smaller fish. These are possible sightings, not guarantees, so choose this trip for the quality of the marine environment rather than a promise of one particular animal.
The small-group limit of four is valuable here. A guide can keep a closer eye on air use, spacing, comfort, and hand signals. It also means less time waiting for a large group to enter the water or gather at the end. On busier days, however, the boat and reef may still have many other scuba groups around. Small group does not mean private reef.
After the first two sessions, you return to the boat for lunch. You need to bring the meal yourself, and drinks are also your responsibility. A packed lunch is more practical than expecting a meal service, especially because the boat schedule is built around the water time.
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Should you pay for the third session?

The optional third session begins around 12:30 p.m. and costs 5,500 yen in cash. It is a good choice if you have plenty of energy, enjoy the first two sessions, and want another site or more time with the reef.
Several participants chose the extra session and described three different locations, turtles, caves, colorful fish, and a reef shark. Three sessions also make the $206 base price feel stronger, since you get more underwater time from the same boat outing. Still, the add-on is not a bargain if you are tired, seasick, or uncomfortable after the first two.
Ask about the plan before the morning starts. The standard package includes two sessions, while the third is optional. This distinction has not always been obvious to participants, so confirm the schedule and the cash payment before you board.
Equipment, wetsuit fit, and underwater photos

Full scuba equipment rental is included, which saves you from transporting bulky gear to Naha. The crew handles the basic setup, and the boat briefing helps you understand how the equipment will be organized.
Wetsuit fit deserves special attention. One participant found the hired suit too small across the chest and could not fully zip it, although the warm water made the problem manageable. If you need a larger or differently shaped suit, request it in advance rather than hoping the standard size will work.
The dive computer is not included in the usual price. You can add one for 1,500 yen in cash, or it may be offered at no charge in exchange for a positive review. If you prefer to use your own computer, bring it if appropriate and confirm the arrangement with SEAKERS.
Underwater photos are included. The guide may capture images during the sessions and send them afterward, often including short edited videos. This is a practical benefit for people who want proof of the experience but do not want to carry a camera or worry about operating it while managing buoyancy.
Who will enjoy this day, and who should skip it

This outing suits certified scuba participants who want a full day on the water without arranging transport, gear, and a boat independently. It is especially useful if you are staying in the covered parts of Naha, Urasoe, or the listed Ginowan hotels.
It also suits people who value direct support. English and Japanese are available, and the group size lets the guide give more personal attention. The guides named in the experiences, including Ryuta and Yun, are described as clear, patient, friendly, and safety-focused.
It is not suitable for non-swimmers or people without certification. The supplied restrictions also exclude children under 12, pregnant women, wheelchair users, people with heart problems, epilepsy, diabetes, kidney problems, high blood pressure, recent surgery, low fitness, or a strong tendency toward seasickness. People over 60 are also listed as unsuitable, so check directly with the operator if your age or health falls near one of these categories.
Do not touch marine life. That rule protects the animals and the reef, and it is part of being a responsible person underwater. Keep your hands off coral and wildlife even when a turtle, shark, or unusual fish comes close.
Practical details that make the morning easier

Use the cancellation flexibility if your schedule is uncertain. You can cancel up to 24 hours ahead for a full refund, and the reserve-now, pay-later option lets you hold a place without paying immediately.
Bring:
- Your recognized scuba certification
- Packed lunch and drinks
- Towel and change of clothes
- Flip-flops
- Cash for the optional third session or dive computer
- Only a small personal bag
The day lasts about eight hours, but the time can shift because of weather, boat conditions, and site changes. Keep the rest of your afternoon flexible, especially if you have a flight, ferry, or fixed dinner reservation.
Should you book the Kerama day trip?

I would book this outing if you are already certified, want two guided boat sessions in clear Kerama water, and value simple logistics. The combination of transfers, equipment, insurance, a small group, English guidance, and photos gives the $206 price solid value.
I would pause if you dislike early starts, long boat crossings, or bringing your own lunch. I would also confirm the pickup point, wetsuit size, computer fee, and third-session cost before booking. For an energetic certified participant who wants reefs, turtles, colorful fish, and a chance at a third session, SEAKERS offers a practical way to reach Kerama National Park from Naha.
Key points
- Kerama National Park: Clear water, coral reefs, turtles, colorful fish, caves, and possible shark sightings define the underwater setting.
- Small groups: A maximum of four participants gives the English or Japanese guide more room to watch your comfort and safety.
- Two sessions included: The base price covers two boat sessions, with a third available for 5,500 yen in cash.
- Useful extras: Equipment, insurance, hotel transfers in selected areas, and underwater photos are included.
- Bring your own meal: Lunch and drinks are not provided, despite a scheduled lunch stop on the boat.
- Check the wetsuit: Request the right size early, especially if standard suits are often tight across the chest.
FAQ
Is scuba certification required?
Yes. Every participant must hold a valid scuba certification from a recognized organization.
How many underwater sessions are included?
Two boat sessions in Kerama National Park are included in the base price. A third session is optional and costs 5,500 yen in cash.
How much does the activity cost?
The listed price is $206 per person. The optional third session and dive computer cost extra.
Is equipment rental included?
Yes. Full scuba equipment rental is included in the activity price.
Is lunch included?
No. Lunch and drinks are not included. You should bring a packed lunch and your own drinks for the scheduled meal stop on the boat.
Is hotel pickup available?
Yes, pickup and drop-off are available in selected parts of Naha, Urasoe, and Ginowan. Some locations are excluded, including Akamine and Shuri in Naha. Only three listed hotels are covered in Ginowan.
Which languages are available?
Instruction is available in English and Japanese.
What happens if the weather is bad?
SEAKERS may arrange another site at no extra cost. If no suitable alternative is available, a full refund is issued.
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