Okinawa: Naha: 1 day Kerama Islands diving‣ license required

The best part of this Kerama Islands scuba day is the boat ride itself. From Naha, you cruise toward Tokashiki, Zamami, or Aka Island on a high-speed boat, then visit three sites chosen for the day’s conditions and your interests. The water is known for clear views, coral, fish, and the chance of seeing turtles.

I like the flexible approach for solo guests and the practical winter setup, including a boat coat, heated cabin, hot water shower, and warm food. I also like that the staff try to match sites to your level, whether you want small creatures, larger fish, or underwater rock formations. The main caution is quality control: some people praised patient guides and excellent sites, while others reported worn equipment, weak briefings, and crowded conditions.

Key points

• Three Kerama sites in one day: The route may include waters around Tokashiki, Zamami, and Aka Island, with locations selected according to sea conditions.
• C-card required: This is for certified scuba participants, not first-time introductory guests.
• Boat access from Naha: Pickup is available within Naha when seats remain, with the boat scheduled to leave at 8:00 AM.
• Seasonal extras: Whale watching runs from mid-January through March, shaved ice is offered in August and September, and January 1 includes mochi pounding and all-you-can-eat mochi for lunch customers.
• Good solo option: You can book alone, and the instructors work with different experience levels, including people returning after time away.
• Bring lunch or pay extra: Lunch is not included, though Okinawa soba and oden are available for about 1,000 yen.

Three Kerama sites from an 8:00 AM departure

This is a seven-hour outing built around roughly six hours in the Kerama National Park area. The day begins with pickup in Naha, followed by transport to the port. The boat leaves at 8:00 AM, so this is not a sleep-in activity. You need to be ready outside your hotel at the time sent by email the day before.

Once aboard, the ride becomes part of the experience. The high-speed boat passes other islands on the way to the Keramas, giving you open-water views before the underwater portion begins. If you are prone to seasickness, take your usual motion-sickness medicine in advance. The boat ride can be exciting, but the same speed and open sea can be hard on a sensitive stomach.

The operator has two boats, which allows some flexibility in arranging the day. The plan is usually three sites, although the exact locations can change suddenly with weather and sea conditions. That is sensible in Okinawa, where protecting the schedule matters less than choosing safe water.

What the underwater day is designed to offer

The staff guide mainly around Tokashiki, Zamami, and Aka Island. These islands are part of the Kerama National Park area, and the appeal is the mix of clear water, coral, fish, and varied underwater terrain. The operator says you can request an emphasis on large fish, small creatures, or rock formations, although the final choice depends on conditions.

A good day may give you colorful coral, schools of fish, and a turtle. One particularly positive account described three excellent sites, striking coral, and many kinds of marine life. Another person found plenty of fish and good visibility but felt that the second site offered little beyond sand. This is a useful warning: even in a famous marine area, not every stop will be a showpiece.

The goal is three sites, but site quality can vary. I would treat the route as a chance to see a broad sample of the Keramas rather than a guarantee of three perfect locations. Water conditions, season, visibility, and the guide’s judgment all matter.

The Chibishi Islands are not part of this route. If you are specifically comparing Kerama trips and want Chibishi, this is the wrong choice.

A sensible choice for certified solo participants

You need a C-card to join. The experience is not intended for uncertified beginners, but it is designed to welcome people who have not been in the water for a while. The staff say they adjust guidance to your level and answer questions about the kind of underwater scenery you want to see.

That flexibility is useful if you are traveling alone. You do not need to bring a group, and solo participants can be placed with others for the day. One solo guest found the group friendly and did not feel left out. Another praised the patience of the instructors and said the staff helped make the day comfortable.

The named instructors include Takashi and Koyama. Takashi received especially warm praise for patience and care. Koyama was also described as kind and helpful. English ability may vary by instructor, however. Some English-speaking participants found communication good, while another had trouble discussing details with a guide whose English was limited. Underwater hand signals remain useful, but clear surface briefings are still important.

I would tell you to ask questions early, especially about equipment, the planned route, and how the group will be organized. The boat may carry both scuba participants and snorkelers. This can make the atmosphere social, but it may also mean a larger group and a quicker pace between activities.

Equipment and safety deserve close attention

The price includes full rental equipment, tanks, weights, towels, tea, a changing room, a hot water shower, a toilet, and a boat coat. That is a strong practical package for visitors who do not want to transport bulky gear to Okinawa.

There is also a rental camera if reserved ahead of time. A GoPro costs 3,000 yen with an SD card, while a rental camera SD card costs 2,000 yen. You can bring your own card for the rental camera. Reserve camera equipment early if underwater photos matter to you.

The equipment reports are mixed, and this is the most important issue to weigh before booking. One person reported a faulty inflator, worn booties, and a request to replace a BCD that was not accepted. That is a serious concern. Other people had smooth, safe days and praised their instructors, so the experience is not uniformly poor. Still, I would inspect your gear carefully before entering the water. Test the inflator, check the regulator, look over the booties, and tell staff immediately if something feels wrong.

Briefing quality also appears to vary. A strong guide can make a major difference in a three-site day, especially when the water is busy or conditions change. You should expect a professional safety briefing, and if anything is unclear, ask before leaving the boat.

Marine life should be treated with care. Do not touch coral or animals, and keep your hands and fins away from the reef. This is basic good practice, not an optional courtesy. The operator prohibits touching marine life, but your own attention still matters.

Winter comfort in Okinawa’s cooler months

Winter in Okinawa is mild by many standards, with average air temperatures around 20°C. Kerama seawater is said to remain above 22°C, but wind on a moving boat can make the ride feel much colder.

The operator provides a 5mm one-piece wetsuit with a 3mm hooded vest underneath. You can also use a boat coat over the wetsuit at no extra cost. The cabin and engine heaters help keep the inside of the boat near 25°C, and hot Okinawa soba and oden are available for lunch.

This is more useful than it may sound. A cold boat ride can spoil an otherwise fine day, particularly after several hours in the water. Bring dry clothes, and use the warm cabin between sites rather than staying exposed on deck.

The heated gear is limited, so mention your needs when booking. You should not assume every special cold-weather item will be available at the last moment.

Seasonal reasons to choose a particular date

The activity changes with the calendar.

From January 1, the operator holds a traditional mochi-pounding event with all-you-can-eat mochi. This applies to people who order lunch. It is a fun cultural touch, but it should not be the main reason to book a scuba trip, since the day still depends on weather and sea conditions.

Whale watching is included on the Kerama route during the winter season, listed as January 12 or January 15 through March 31 in the supplied details. Because the dates conflict slightly, confirm the exact start date when reserving. Whale sightings are considered likely, but never guaranteed. Rough water, poor visibility, and animal behavior can all prevent a sighting.

August and September bring shaved ice after the water activities. It is a small extra, yet welcome in Okinawa’s heat. Free swim rings are also available with advance reservation. These are more relevant to people combining scuba with a relaxed boat day than to certified participants focused only on underwater time.

Birthday trips and commemorative outings can also be arranged as special events. Put the request in the booking comments rather than assuming the crew will know.

Lunch, transport, and the real cost

The advertised price is $129 per person. For a seven-hour boat day with tanks, weights, equipment, towels, facilities, and transport within Naha, that can be good value. You are paying for access to a national park area that is not practical to reach independently in a single day.

Lunch is not included. You can bring a packed meal, or order lunch for about 1,000 yen. Warm Okinawa soba and oden are available in the colder months. Tea is included, but one account described the drink service as limited to cold tea, so bring extra water if you prefer something else.

Pickup is available only within Naha city and only while seats remain. Give the hotel name and address when you book. If the pickup seats fill, you may need to meet at the port. Port parking costs 500 yen per day, while a customer parking lot is available for people arriving by car.

If your hotel is outside Naha, the meeting and return point will be arranged locally rather than through the Naha pickup service. Read the email sent the day before, since that message provides the pickup time. Missing the 8:00 AM departure would mean missing the boat, not simply arriving late for a walking tour.

The no-cost cancellation window is up to 24 hours before departure, and you can reserve now and pay later. Those terms help if your Okinawa plans are still shifting, but weather can still change the route or cancel the outing on the day.

Who should book this Kerama outing?

I would consider it for a certified scuba participant staying in Naha who wants a full day on the water without arranging a separate boat, tanks, and transport. It is especially practical if you are alone, returning to the sport after a break, or interested in three sites rather than one short session.

It suits people who value convenience and seasonal extras. The free boat coat, towels, shower, and pickup remove several small hassles. The January whale season and the New Year mochi event add character, while summer shaved ice makes the hot months more pleasant.

I would be more cautious if you need highly polished English instruction, pristine rental gear, or a small quiet boat. The group may include snorkelers, and some accounts describe crowded conditions or a rushed feel. If equipment standards are your top concern, bring your own critical items if possible and check every rental piece before the first entry.

The activity is not suitable for children under 10, pregnant people, uncertified participants, or people with listed medical conditions such as heart, respiratory, kidney, or seizure problems. It is also not designed for wheelchair users or people with significant mobility limitations. Minors need parental consent, and unaccompanied minors cannot participate.

Should you book it?

Book this trip if you are a certified scuba participant who wants easy access from Naha, three possible Kerama sites, and a package that includes most of the expensive gear. The strongest reasons are the island-hopping boat route, patient instructors such as Takashi and Koyama, and the chance to see coral, fish, turtles, or winter whales.

Pause before booking if you are uneasy about shared boats or rental equipment. Ask about the day’s group size, confirm the pickup, reserve any camera or swim ring, and request clear information about the gear. With realistic expectations, this can be a convenient and memorable Okinawa sea day. It is not the right choice if you need a guaranteed whale sighting, three exceptional sites, or a first-ever lesson.

FAQ

Is a scuba certification required?

Yes. You must have a C-card to participate, and uncertified divers cannot join.

How long does the activity last?

The total duration is about seven hours. The Kerama National Park portion is listed as six hours, with transport taking roughly one hour each way.

What time does the boat leave?

The boat departs at 8:00 AM. Check the email sent the day before for your exact pickup time.

Is pickup available from my hotel?

Pickup is available within Naha city when seats remain. You must provide your hotel name and address during booking. If pickup seats are full, or if you stay outside Naha, you may need to meet at the port or another local meeting point.

Are tanks and weights included?

Yes. Full rental equipment, including tanks and weights, is included in the price.

Is lunch included?

No. You can bring a packed lunch or order lunch for about 1,000 yen. Okinawa soba and oden are available, especially during the cooler season.

Can I rent a GoPro or camera?

Yes, but camera rental requires advance reservation. GoPro rental costs 3,000 yen with an SD card. A rental camera SD card costs 2,000 yen, or you can bring your own card.

Is whale watching included?

Whale watching is included on the Kerama route during the seasonal period listed as January 12 or January 15 through March 31. Sightings are not guaranteed because of weather, sea conditions, and whale behavior.

What happens if the weather is bad?

The route may change, or the activity may be canceled because of weather and sea conditions. You can cancel up to 24 hours in advance for a full refund under the stated cancellation terms.

What should I bring?

Bring sunglasses, swimwear, a change of clothes, sunscreen, personal medication, your diving certification, and your dive log. Also bring lunch unless you order it in advance.