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

The best part of this Okinawa outing is the high-speed boat ride through the Kerama Islands. From Naha, you head toward Tokashiki, Zamami, or Aka Island, then spend the day at three selected underwater sites. The crew aims to match the sites to your experience and interests, from small reef life to larger fish and underwater rock formations.

I like two things here. Solo participants are welcome, and the staff work with different experience levels, including people returning after a long break. I also like the practical extras: hotel pickup in Naha, towels, full equipment, a hot shower, and a free boat coat in cooler months.

The main caution is consistency. Several people had an excellent day with patient instructors and clear English, but others reported worn equipment, rushed briefings, or weak English communication. You need a C-card, and you should raise any equipment concern before leaving the port.

Kerama Islands scuba trip: key points

• Three underwater sites in one day: The crew selects three locations around Tokashiki, Zamami, or Aka Island according to sea conditions and the day’s plan.
• High-speed boat from Naha: The boat departs at 8:00 AM, with roughly one hour of transport each way and about six hours around Kerama National Park.
• Seasonal extras: Whale watching is offered during the winter season, listed as January 12 or January 15 through March 31, depending on the booking information. Shaved ice is available in August and September.
• Good for solo and returning scuba participants: You can book alone, and instructors aim to adjust the pace to your level.
• Important equipment check: Full rental gear is included, but one poor account described a faulty inflator and badly worn booties. Inspect everything and speak up immediately.
• Lunch is not included: You can bring food or add lunch, with Okinawa soba and oden provided in the cold season.

Leaving Naha at 8:00 AM

This is a long morning, not a casual beach activity. The boat leaves at 8:00 AM, and pickup is available only within Naha city, subject to available seats. You must provide your hotel name and wait outside when the operator gives you the pickup time by email the day before.

If the pickup seats fill, you meet at the port instead. Drivers who come independently have access to customer parking, while port parking costs 500 yen per day. If you stay outside Naha, the outing also uses a local meeting point rather than hotel transport.

The ride takes about an hour each way. That sounds like a simple transfer, but the high-speed boat is part of the experience. You get open-water views and see other islands on the way to the Keramas. The trade-off is motion. If you are prone to seasickness, take approved medicine in advance, as the operator recommends.

Bring a swimsuit, sunscreen, sunglasses, a change of clothes, personal medicine, your certification card, and your dive log. Pack a lunch unless you have arranged the paid lunch option. Tea is included, but one account found the drink service limited to cold tea, so do not expect a full snack program.

Three sites around Tokashiki, Zamami, and Aka

The day is built around three underwater sessions in Kerama National Park. The exact locations can change because of weather and sea conditions, and the crew says it selects the best available points each day. That flexibility matters in Okinawa, where wind, current, and visibility can alter the quality of a site.

You can tell the staff what interests you before entering the water. Ask about larger fish, small reef creatures, or rock formations. This is more useful than simply accepting a standard route, especially if you have already spent time in Okinawa’s water and want a particular kind of scene.

The strongest reports describe clear water, colorful coral, many fish, and memorable marine life. One person especially enjoyed seeing a turtle and other animals. Another had three attractive sites, with coral and fish making the day worthwhile. These are the conditions that make the boat ride and long schedule pay off.

Still, you should keep expectations measured. One session may be less rewarding than another. A person on one outing found mostly sand at the second site, while another reported seeing little beyond a small turtle. Sea conditions, site selection, and luck all matter. Three planned stops do not guarantee three equally impressive underwater scenes.

The boat may also carry people who are snorkeling. One account described a large mixed group but found it manageable because scuba participants entered the water first. A separate account raised concerns about poor behavior around coral, including people touching marine life and breaking coral with hands or fins. The operator’s rules clearly prohibit touching marine life, and you should follow them closely.

What the instructors add, and where communication can slip

The crew includes veteran instructors, and the experience is offered in Japanese and English. Several people found the staff friendly, patient, and reassuring. Takashi received particular praise for his patience and instruction, while Koyama was described as kind and helpful.

That personal support is important if you are returning to scuba after time away. The operator says instructors can answer questions about the type of underwater scenery you want and adjust guidance to your level. You can participate alone, and the setup does not require bringing your own group.

English ability may vary by instructor, however. One experienced instructor was excellent in the water but difficult to understand during above-water explanations. Another account criticized the safety briefing and said the instructor had little command of English. I would not treat those comments as proof that every session has the same problem, but I would make your needs clear when booking.

If you are not confident with technical English, ask for a careful equipment and safety explanation before the first session. Confirm hand signals, the plan for the site, and what to do if you have a problem. The operator describes the trip as suitable for people who need a calm return to scuba, but that only works when you and the crew communicate clearly.

Rental equipment deserves a close inspection

The $129 price includes full rental equipment, tanks, and weights. You also receive a towel, tea, changing room access, a hot-water shower, and a toilet. A rental camera is available by reservation, which is useful if you want photos without bringing your own device.

The equipment offer is generous for the price, but I would inspect every item before boarding. Check the BCD inflator, regulator, mask, fins, booties, and wetsuit. One account described an inflator problem that was not corrected and booties in poor condition. That is a serious concern, especially when you are several miles from shore.

You can request a replacement before the boat leaves. If something feels wrong during the first equipment check, do not assume it will improve underwater. Tell the staff plainly and ask for a solution. This small step may make the difference between a relaxed day and a stressful one.

A GoPro costs 3,000 yen and includes an SD card. A rental camera costs extra for its SD card, listed at 2,000 yen, though you can bring your own card. Reserve the camera in advance rather than counting on one being available at the last moment.

Winter comfort from January through March

Okinawa’s winter air can feel cool on a moving boat, even when the temperature is around 20°C. The operator uses a 5 mm one-piece wetsuit with a 3 mm hooded vest underneath, plus a boat coat that you can borrow at no charge.

The cabin and engine heaters are used to keep the inside of the boat near 25°C. Lunch in the colder season includes hot Okinawa soba and oden if you choose the lunch option. If you tend to feel cold, tell the staff when you reserve. The special cold-weather gear is limited.

Winter also brings the seasonal whale-watching option. The information gives two start dates, January 12 and January 15, with the service continuing through March 31. Confirm the exact date for your booking. Whale sightings are considered likely, but never guaranteed because weather and sea conditions can prevent observation.

This seasonal addition does not replace the underwater program. It is an extra opportunity along the Kerama route, and the boat’s main purpose remains the three-site scuba schedule.

Summer touches: shaved ice and free swim rings

August and September bring a shaved-ice service. After several hours in the sun and salt water, that is a welcome treat, especially in Okinawa’s hot season. The service is seasonal, so it should not influence a winter booking.

Free swim-ring rentals are also available, but you must reserve them. This is a small detail, yet useful if you are traveling with someone who wants extra flotation during surface time. Ask for the ring when booking, not on the boat.

The operator also arranges special occasions such as birthdays and commemorative underwater outings. The available information does not give a fixed package or fee, so write your request in the booking comments and wait for confirmation.

January 1 has its own tradition. The first underwater session is paired with mochi pounding and an all-you-can-eat event. The mochi event is for participants who order lunch, so this is not simply included for every booking. If you are in Naha on New Year’s Day, confirm the lunch arrangement in advance.

Lunch, facilities, and the real value of $129

At $129 per person, this is a reasonable price for a full day on the water if you need rental equipment and hotel transport. The included tanks, weights, wetsuit setup, towel, shower, changing room, tea, and boat coat reduce the pile of small charges that can make a boat outing expensive.

Lunch is the main extra to plan for. You can bring a packed meal, or pay for lunch, with one account putting the added cost at about 1,000 yen. The cold-season menu of Okinawa soba and oden sounds practical after time in the water, but it is not part of the base price.

The paid camera options can also change your final bill. Add 3,000 yen for a GoPro with SD card, or 2,000 yen for a rental camera SD card if you do not bring your own. I would compare those costs with your phone or personal camera setup before reserving.

The value is strongest for a certified person staying in Naha who wants a complete day without arranging a separate port transfer or renting tanks elsewhere. It is weaker for someone who owns all equipment, wants a tiny private group, or expects every site to be packed with large marine life.

Who should book this day on the Keramas

This trip suits certified scuba participants who want to return to the water after a break. The operator accepts solo bookings and aims to guide people according to experience, which makes it easier to book without coordinating a group.

It also suits an active visitor who wants more than a short coastal outing. Six hours around the national park, three underwater sites, and the boat journey create a full day. The schedule is firm, though, and the early departure leaves little room for a slow Naha morning.

You should not book if you are uncertified, under 10, pregnant, or dealing with conditions listed by the operator, including heart, respiratory, kidney, blood pressure, seizure, diabetes, or recent surgery concerns. The outing is also not suitable for people with mobility limitations, wheelchair users, people with vertigo, or anyone with a current cold. Minors need parental consent, and unaccompanied minors cannot participate.

The experience is not designed for casual sightseeing from a boat alone. You need to be comfortable with scuba equipment, boat travel, and a long day around the water. Follow the no-touch rule around marine life, and do not bring alcohol, drugs, fishing gear, pets, weapons, oversized luggage, or smoking materials for the vehicle.

Should you book this Kerama Islands trip?

I would book this outing if you are a certified scuba participant based in Naha and value convenience, three water sessions, and included equipment. The Kerama route can deliver excellent coral, fish, clear water, and occasional turtles, while winter whale watching adds another reason to choose the right season.

I would book with two conditions. First, inspect all rental equipment and request replacements before departure. Second, confirm the language support and ask for a careful safety briefing if your Japanese is limited.

The mixed record matters. Patient instructors such as Takashi and Koyama can make the day comfortable, and several people found the staff friendly and the underwater scenery excellent. But concerns about worn gear, rushed explanations, and inconsistent site quality should not be brushed aside.

For the right certified participant, the $129 package offers a practical way to reach the Keramas without organizing every detail yourself. For a first-time scuba participant, a small private lesson, rather than this certified-only boat day, would be the better choice.

FAQ

Do I need a diving certification?

Yes. You must hold a C-card to join this activity, and you should bring your certification card and dive log.

How long does the activity last?

The full experience lasts about seven hours. The schedule includes roughly one hour of transport each way and about six hours around Kerama National Park.

What time does the boat leave?

The boat departs at 8:00 AM. Check the pickup email sent the day before and arrive on time.

Is hotel pickup available?

Pickup is available within Naha city, but seats are limited. Provide your hotel name when booking and wait outside at the confirmed time.

What happens if I stay outside Naha?

You meet and finish at the designated local meeting point rather than using Naha hotel pickup. Provide your hotel name and address when booking so the operator can contact you.

Which islands are included?

The route mainly covers areas around Tokashiki Island, Zamami Island, and Aka Island. The Chibishi Islands are not included.

Are three underwater sessions included?

The program is designed around three selected underwater sites during the Kerama National Park portion. The exact locations can change because of weather and sea conditions.

Is lunch included in the price?

No. You can bring a packed lunch or arrange the paid lunch option. In the cold season, the lunch offering includes hot Okinawa soba and oden.

Can I rent a camera?

Yes, a rental camera is available by reservation. A GoPro costs 3,000 yen with an SD card, while a rental camera SD card costs 2,000 yen if you do not bring your own.

Is whale watching available?

Whale watching is offered on the Kerama route during the winter season, listed in the booking information as January 12 or January 15 through March 31. Sightings are not guaranteed because of weather and sea conditions.