Reviewed · OKINAWA TOURS
Okinawa : Kerama Whole Day Snorkeling Tour From Chatan/Naha
The best part of this Kerama trip is the clear water and reef life. From a boat anchored near the Kerama Islands, you snorkel at two or three sites, looking for clownfish, coral, turtles, and other sea life. A beginner-friendly underwater option is also available, with no license required.
I like the choice of departure points, since you can leave from Naha or Chatan, and I like that equipment, insurance, a wetsuit in cooler months, and guide photos are included. The main catch is simple: you do not go ashore, and rough seas can reduce three stops to one or two.
Key points to know before you book

- Two or three reef stops: You stay on the boat and swim at selected sites around Kerama National Park.
- Turtles are possible, not promised: You might see several turtles, fish, coral, or even a white-tip shark, but wildlife sightings depend on luck.
- Naha or Chatan departure: Pick the port that best fits your hotel and daily plans. Chatan departures require a 200-yen port fee in cash.
- Beginner-friendly water time: Life jackets are mandatory, and a single introductory underwater session is available without a license.
- Photos are included: The crew takes underwater photos and videos, but a picture of every person cannot be guaranteed.
- Strict health and weight rules: Snorkeling has a 120-kilogram limit, while the introductory underwater option has a 100-kilogram limit.
Why Kerama National Park is worth the boat ride

Okinawa has many places to swim, but the Kerama Islands give you access to a protected marine area away from the main island. The attraction is not a beach visit or a village stop. It is the water itself: coral, fish, and open sea viewed from a boat.
The water is described as crystal clear, which matters when you are trying to spot small fish and coral below you. You may see clownfish moving around their host coral, schools of colorful fish, and, with good fortune, sea turtles. One especially lucky outing included four turtles at two sites and a white-tip shark that moved away without bothering anyone.
I would treat those sightings as a bonus, not a promise. The tour specifically says turtles are not guaranteed, and sea conditions can change the plan. Still, the Kerama marine setting gives you a strong chance to see a good range of sea life in a single day.
More snorkelling spots near Okinawa:
- Okinawa: From Naha: Kerama Islands 1-day snorkeling tour
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★ 4.7 · 370 reviews - [Miyako Island/Half Day] Sea Turtle Snorkeling
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Choosing Naha or Chatan for your departure

The tour runs from either Naha or Chatan, which is useful if you are splitting time between southern and central Okinawa. Choose the port that saves you the most ground, rather than assuming one departure is better for the water experience.
If you leave from Chatan, bring 200 yen in cash for the port facility fee. That small charge is not included in the $94 price. The available information does not give a fixed departure time, so check the exact meeting instructions when you reserve.
Transportation is included, but the provided details do not spell out every transfer step or vehicle arrangement. Bring only what you need for the boat. Large bags and luggage are not allowed, and baby strollers or carriages cannot come along.
What happens once the boat reaches the reefs

You do not land on any of the Kerama Islands. The boat anchors at swimming points, and you enter the water from the boat for each session.
The plan is normally two or three snorkeling locations. Each stop gives you a fresh section of the underwater area to explore, rather than keeping you in one patch of water for the entire day. That variety is a real advantage because coral and fish life can differ from one site to the next.
The exact order of the stops depends on the number of people taking the introductory underwater option. Those participants use one of the first or second sites for their session, then snorkel at the other locations. If conditions are poor, the crew may reduce the day to one or two sites instead of three, or shorten the trip.
That flexibility is sensible at sea, but it means you should not book this expecting a guaranteed three-stop schedule. There is no refund for a weather-related reduction unless the entire tour is canceled.
Snorkeling with fish, coral, and possible turtles

Life jackets must be worn at all times, and skin swimming without one is not permitted. The rule may feel restrictive if you are a strong swimmer, but it keeps the group easier for the crew to monitor and is especially helpful for beginners.
The included snorkeling set lets you get started without packing your own mask, fins, or other main gear. Prescription masks are available in limited quantity, so contact the operator in advance if you need one. Disposable contact lenses are suggested as another option.
The strongest wildlife moments will depend on your timing and luck. You might see a turtle resting or moving through the water, but you might also spend your sessions with fish and coral only. Both are worthwhile, and the coral itself is a major reason to make the trip.
One useful tip comes from the practical side of reef care and sun protection: wear a long-sleeved swim shirt if you have one. It protects you from the strong Okinawa sun and reduces your need for ordinary sunscreen, which can harm coral reefs. Bring reef-conscious sunscreen if you use it, and follow any instructions from the crew.
A few more Okinawa half-days to weigh up
- Naha, Okinawa: Kerama Islands Full-Day Intro-Diving Trip
★ 4.6 · 203 reviews - Naha: Full-Day Snorkeling Experience in the Kerama Islands, Okinawa
★ 5.0 · 128 reviews - Naha: Full-Day Introductory diving & Snorkeling in the Kerama Islands, Okinawa
★ 4.5 · 28 reviews - From Tokyo: Mount Fuji Full-Day Sightseeing Trip
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The introductory underwater option for first-timers

You can add one introductory underwater session without holding a license. Full equipment is supplied for that option, and you spend the remaining stops snorkeling.
This is not a full certification course or a multi-session program. It is a trial experience at one of the first or second sites, with the exact location based partly on how many people choose it. If you have always wanted to try breathing underwater but do not want a full course, this gives you a short introduction while preserving regular snorkeling time.
The weight limit is lower for this option: 100 kilograms, or 220 pounds. No flight is allowed on the same day after taking part, because of pressure-related safety risks. Plan this carefully if Okinawa is only one stop in a tightly packed itinerary.
The crew, photos, and language support
The provider is Cerulean Blue Okinawa. Guidance is offered in English and Japanese, with basic English or Korean noted for the instructor support. You should be ready for simple, practical instructions rather than a long marine biology lecture.
That is not a problem for this type of outing. Safety explanations, equipment checks, entry instructions, and signals matter more than elaborate commentary when you are on the water.
The crew has also been praised for being careful and patient with beginners. One first-time snorkeler received step-by-step help from a young female guide who took time to explain what to do. That is the sort of support that can turn a nervous start into a good day.
Photo data is included, and two guides may swim around the group taking pictures and videos. The operator cannot promise a photo of every participant, so do not treat the service as a personal photo shoot. Still, it is a useful extra, especially if you do not want to risk your phone in salt water.
How much value you get for $94
At $94 per person, the price is reasonable for a full-day boat outing if you use the included equipment and make good use of the two or three water stops. You are also getting transportation, guide fees, insurance, a life jacket, a snorkeling set, and photo data.
A wetsuit is included outside July, August, and September. In those three warmer months, it is not normally supplied, though you can request one in advance. Oversized wetsuits are not available for people near or above 99 kilograms, or 220 pounds, but swimming with a life jacket remains possible within the snorkeling weight limit.
Lunch is not included. Pack food, water, and a change of clothes, since there is no island landing where you can buy something during the outing. Add the 200-yen Chatan port charge if you start there.
The value is strongest for someone who wants a boat-based marine day and does not need beach time. It is less attractive if you expect a guided island visit, a restaurant meal, or a guaranteed turtle encounter.
What to pack for a comfortable day
Keep your packing simple. You should bring:
- Swimwear and a towel
- Comfortable shoes
- A hat
- A change of clothes
- Food and water
- Sunscreen, preferably reef-conscious
- Cash if departing from Chatan
Large luggage is not allowed, so leave suitcases at your accommodation. Alcohol and drugs are prohibited before and during the outing, and smoking is not allowed. Loud music and disruptive behavior are also forbidden.
A long-sleeved swim shirt is one of the most useful additions. It helps with sun protection and can reduce your reliance on sunscreen while you are in the water.
Who should book this Kerama outing

This trip suits adults and children from age six through 60 for snorkeling, provided they meet the health and equipment limits. It is a good fit for a first-time snorkeler because life jackets are required and the crew provides instruction and support.
It also works well for couples and families who want several reef settings in one day. The possibility of turtles adds excitement, but the trip still has value if you see only fish and coral.
The tour is not suitable for pregnant people or anyone with heart or lung conditions, respiratory problems, high blood pressure, ear infections, diabetes, or epilepsy. You also cannot take part if you are hungover or under the influence of alcohol. A health check takes place on the day, and there is no refund if you fail it.
The snorkeling equipment limit is 120 kilograms, or 265 pounds. The introductory underwater option allows up to 100 kilograms, or 220 pounds. Age limits and health rules are firm, so check them before paying.
What can affect the schedule
The sea sets the timetable here. Wind, waves, visibility, and safety conditions may reduce the number of sites from three to two or one, or shorten the outing. A complete cancellation is possible if conditions are unsafe.
The tour may also be canceled if fewer than four people book. You should receive notice by the day before in that case. For ordinary changes in sea conditions, there is no partial refund unless the whole outing is canceled.
That policy is worth understanding before you reserve. You are paying for access to a marine area, but nature controls how much of it you can use on a particular day. A flexible schedule gives you the best chance of enjoying the experience without feeling rushed.
Cancellation is free up to 24 hours before departure. The reserve-now, pay-later option can also help if your Okinawa plans are still shifting.
The small drawbacks to consider
The biggest limitation is the lack of island time. You will not walk on a Kerama beach, eat on an island, or explore a village. This is a boat-and-water outing from start to finish.
The second limitation is uncertainty. Three stops are the normal aim, but not a guarantee. Turtles are not guaranteed either, and the $94 price does not include lunch or the Chatan port fee.
The third is group attention. The crew takes photos and offers guidance, but photo coverage of each participant is not promised. If you want a private instructor or a guaranteed personal photo session, this is not that kind of trip.
Still, the practical strengths are clear: useful departure choices, included gear, support for beginners, several reef points, and insurance. A 4.5 rating from 93 reviews fits the overall picture of a well-liked, carefully run water outing with a few predictable limits.
Should you book the Kerama snorkeling tour?
Book it if you want a full day on clear Okinawan water, several chances to see coral and fish, and the option of an introductory underwater session without a license. I especially recommend it for first-time snorkelers who value patient help, supplied equipment, and a structured boat day.
Skip it if you need a guaranteed three-stop schedule, want to land on the islands, or cannot accept the possibility of an early finish because of sea conditions. Also check the health, age, and weight rules before booking, since they are enforced.
For the right person, $94 is a fair price for a marine day that keeps the focus where it belongs: in the water around the Kerama Islands.
FAQ
Where does the tour depart from?
You can choose a departure from Naha or Chatan. If you depart from Chatan, pay a 200-yen port facility fee in cash on the day.
How many snorkeling sites will I visit?
The usual plan includes two or three snorkeling points. Sea conditions may reduce this to one or two sites.
Can I land on a Kerama Island?
No. The tour does not include island landings. You snorkel from the anchored boat.
Are sea turtles guaranteed?
No. Turtles may be seen, but sightings are not guaranteed.
Do I need a license for the introductory underwater option?
No license is needed for the one introductory session. Full equipment is included, and you snorkel at the other sites.
What equipment is included?
The tour includes a life jacket, snorkeling equipment, insurance, and a wetsuit except in July, August, and September. A wetsuit can be requested in advance during those months, but oversized sizes are not available near or above 99 kilograms.
What are the age and weight limits?
Snorkeling is available for ages six to 60, with a maximum equipment weight of 120 kilograms, or 265 pounds. The introductory underwater option is for ages 10 to 60, with a maximum of 100 kilograms, or 220 pounds.
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