Premium Snorkel Tour to the Bays of Koh Tao onboard the Oxygen

Koh Tao’s best feature is its water, and this trip packs several of the island’s most appealing snorkel stops into one morning boat ride. You visit Nangyuan Island, swim at Japanese Reef Garden, and call at bays such as Aow Leuk and Hin Wong, with the crew taking care of transport, food, and equipment.

I like the maximum group size of 25, which is far more comfortable than a packed excursion boat. I also like the generous food setup: drinks and fruit, a vegan or chicken sandwich, and panna cotta are included. The main caution is that popular bays can still attract boats from other companies, so a small group on Oxygen does not guarantee a quiet sea.

Key points at a glance

• Maximum 25 people: A smaller boat group makes check-in, meals, and water time easier to manage.
• Nangyuan Island included: You have time for the famous viewpoint, swimming, and snorkeling at Japanese Reef Garden.
• Five separate snorkel areas: The route covers Tao Thong, Mango or Lighthouse, Hin Wong, Aow Leuk, and Shark Bay.
• Good onboard catering: Expect drinking water, coffee, tea, fresh fruit, sandwiches, and panna cotta.
• Useful same-day timing: The morning departure returns you to Mae Haad Pier around midday according to the tour description, leaving time for onward travel to Koh Samui or Chumphon.
• Wildlife is possible, not promised: Turtles, baby sharks, coral, giant clams, and many fish have been seen, but conditions and animal sightings change.

Why the Oxygen makes sense for a Koh Tao snorkel day

The Oxygen is designed for people who want a full day on the water without joining a giant boat party. A 25-person limit is a real advantage in the bays. You spend less time waiting for a large group to enter the water, and guides can give more direct help to people who are nervous, inexperienced, or keen to find particular fish.

The crew also gets into the water with you. Ton is one guide specifically associated with the trip, and the guides have helped point out turtles, sharks, anemones, giant clams, and coral. That matters because good snorkeling is not only about reaching a pretty bay. It is also about knowing where to look and keeping a safe distance from marine life.

The tradeoff is the route’s popularity. Koh Tao’s famous bays are not private. At Shark Bay or around a turtle, several boats may gather at once, and the water can feel crowded even when your own boat is sensibly sized. A past incident involving a sea turtle being struck by a swimmer also underlines the need for you to stay calm, avoid chasing animals, and keep your fins away from coral and wildlife.

Starting at Mae Haad Pier at 9:00

Pickup is offered from hotels on Koh Tao, followed by check-in at Mae Haad Pier. The meeting point is Oxygen Tour Koh Tao at 8, 38, Koh Tao, Surat Thani 84360. The schedule allows about 30 minutes for hotel pickup and another 30 minutes to meet the crew and check in, so have your booking confirmation ready and avoid arriving at the last moment.

The operation has received praise for friendly staff and good organization, but communication at the office has not been perfect for everyone. I would ask at check-in where to wait, when shoes or bags should be stored, and which guide will lead your group into the water. That small bit of preparation can prevent confusion before departure.

The boat then takes about 30 minutes across the Gulf of Thailand toward Nangyuan Island. A toilet is available onboard, along with drinking water, coffee, and tea. Bring sun protection and a dry change of clothes, as the day includes repeated swims and time in an open boat.

Nangyuan Island and Japanese Reef Garden

Nangyuan Island is the visual highlight before the longer sequence of bays. You have about an hour to climb to the viewpoint, relax, swim, and snorkel at Japanese Reef Garden. The viewpoint gives you the classic view of the island’s narrow white sand connection between its small landforms.

This is not only a boat-based snorkeling trip. You get a chance to walk on land and see Nangyuan from above, which breaks up the water time. The climb is worth considering if you want photographs and a wider view, but you should save enough energy for the later snorkel stops. The route has several more swims after Nangyuan.

There is an additional entrance fee for the island: THB 250 for an adult and THB 120 for a child. This is not included in the tour price, so keep cash or a payment method available. The fee is modest compared with the cost of reaching the island independently, but it changes the true total price of the outing.

Japanese Reef Garden gives you an early chance to test the equipment and water conditions. The included mask, snorkel, and life jacket make packing simpler, though you should check the fit before leaving the boat. If the mask leaks or the fins feel uncomfortable, tell the crew early rather than putting up with poor gear all day.

Tao Thong Bay and the boat’s midday meal

After Nangyuan, the boat serves a sandwich and panna cotta before the final group of snorkel stops. You can choose a vegan or chicken sandwich, and fresh fruit is also included. This is a useful touch because six hours on the water can make even a relaxed swim feel tiring.

Tao Thong Bay is noted for its horn corals. The food is served onboard, so you do not lose time going ashore for lunch. I like this arrangement for a compact tour: you eat, rest, and prepare for the next swim while the boat moves between bays.

The meal is simple rather than a full restaurant lunch, but it fits the setting. Coffee, tea, water, and fruit cover the basics, while the panna cotta adds something more pleasant than the usual packaged snack. If you have dietary needs beyond the vegan or chicken choices, ask before booking because no other menu details are provided.

Mango Bay or Lighthouse Bay

The schedule includes a 30-minute snorkel at either Mango Bay or Lighthouse Bay. The exact choice can depend on conditions, and both are treated as alternatives rather than guaranteed separate stops.

A half-hour sounds short, but it works well as one part of a multi-bay route. You get time to see the area without spending the whole day at one location. It also means you should be ready when the crew calls you back. Bring only what you need into the water and keep track of your mask and fins.

Hotel pickup is not available from Mango Bay or Lighthouse Beach. If you are staying in one of those areas, you need to arrange your own way to the meeting point. For most other Koh Tao hotel locations, round-trip transfer is included, making the $44.92 price more useful than it first appears.

Hin Wong Bay and Aow Leuk’s sheltered water

Hin Wong Bay is another 30-minute snorkeling stop, known on the route for colorful fish. With several bays in one trip, you can compare different underwater settings instead of relying on a single reef. If visibility is less impressive at one stop, the next bay may offer better conditions.

Aow Leuk comes next, with another 30 minutes in the water. Its deep, concave shape helps keep the area suitable for snorkeling even at low tide. The white sand and clear shallower sections make it appealing for people who want an easier entry into the water, though the tour is still dependent on the day’s sea conditions.

The repeated half-hour stops suit you if variety matters more than long, leisurely snorkeling sessions. They are less suitable if you want to spend two or three hours exploring one reef at your own pace. You will need to climb back aboard several times, so pack your expectations accordingly.

Buddha Rock, Free Beach, and Shark Bay

On the way to Shark Bay, the boat passes Buddha Rock, a group of boulders shaped like a seated human figure. Nearby, Hin Yaai Mae is associated with the female form, and both are linked with local spirit beliefs. This is a quick sightseeing detail rather than a long cultural visit, but it gives the boat ride a little more character than a simple series of swimming stops.

The route also includes Free Beach before Shark Bay, with about 30 minutes assigned to this section. Shark Bay is one of the places where you might spot turtles or small sharks, but no responsible tour can promise either. Sea life moves freely, and visibility, noise, tides, and other boats all affect what you see.

If you encounter a turtle, stay several meters away, keep your body level, and let the animal surface without following it. Do not touch coral or stand on the reef. The guides can help identify wildlife, but you also have a duty to protect it. A small group helps, yet other boats may still gather around the same animal.

The boat, crew, and pace

The Oxygen is described as a well-kept boat with space for a maximum of 25 participants. One feature that has drawn particular praise is the top deck, where you can jump into the water for fun. Treat that as optional. If you are not a confident swimmer, use the ladder and life jacket instead.

The guides are active in the water, helping people find the best areas and explaining fish and coral. That is more useful than a guide who stays aboard and simply points out the swimming zone. The basic accident insurance is included, but it should not replace sensible behavior, careful listening, and honest communication about your swimming ability.

The trip is conducted in English. Most people can participate, but the supplied information does not promise a special program for non-swimmers or a particular level of accessibility. Ask the operator before booking if you need extra assistance, have mobility limits, or require a specific type of flotation support.

The pace is energetic. You start with pickup and check-in, cross to Nangyuan, spend an hour there, eat onboard, and then make several short snorkel stops before returning to Mae Haad. It is a good structure for seeing a lot of Koh Tao in one day, but not for sitting quietly in one bay.

Is $44.92 a fair price?

At $44.92 per person, the tour offers solid value if you use the included services. Hotel round-trip transfer, snorkeling gear, a life jacket, drinks, fruit, a sandwich, dessert, an English-speaking guide, basic accident insurance, and a toilet onboard are all part of the package.

You still need to add the Koh Nangyuan entrance fee of THB 250 per adult or THB 120 per child. Pickup also excludes Mango Bay and Lighthouse Beach. Those extra points are easy to overlook, so include them when comparing this trip with cheaper boat tours.

The strongest value is convenience. Organizing transport, boat tickets, multiple bays, Nangyuan access, equipment, and food yourself could take more time and may not cost less. The smaller group also gives the tour an edge over large boats carrying 60 to 100 people.

I would not pay this price expecting a private reef or guaranteed turtles and sharks. I would pay it for a well-packed route, a manageable group, onboard food, and guides who enter the water with you. That is a fair deal for a first Koh Tao snorkeling day or for anyone with limited time on the island.

Who should book this tour

This trip suits you best if you want to see several parts of Koh Tao in one outing and prefer a group small enough to feel organized. Families with older children, couples, solo people, and confident beginners can all fit the format, provided they are comfortable with repeated swims and boat transfers.

It is also useful if you plan to leave Koh Tao later the same day. The tour begins at 9:00 am and is described as returning to Mae Haad around midday, though the published duration is approximately six hours. Since those details do not perfectly match, confirm the return time before arranging a ferry to Koh Samui or Chumphon.

You may want another option if you dislike fixed schedules, need a long beach stay, or want to snorkel far from other boats. You should also think twice if you are uncomfortable in open water. The crew provides a life jacket, but the trip remains a water activity with several entries and exits.

Free cancellation is available up to 24 hours before the start time. Changes or cancellations inside that window are not accepted for a refund. Poor weather or failure to reach the minimum of two participants can lead to a new date, another experience, or a full refund.

Final recommendation

I would book the Oxygen for a convenient, small-group introduction to Koh Tao’s bays. The best reasons are the 25-person limit, active guides, several snorkeling areas, Nangyuan Island, and food that is better planned than the usual basic excursion snack.

Go in with realistic expectations. You may see turtles, sharks, coral, giant clams, and colorful fish, but you may also get ordinary visibility and crowded water at famous stops. If you respect the reef, listen to the guides, and confirm the return time and Nangyuan fee, this is a strong-value choice for a busy Koh Tao morning.

FAQ

What time does the tour start?

The tour starts at 9:00 am. Hotel pickup on Koh Tao is offered before check-in at Mae Haad Pier.

How long does the tour last?

The stated duration is approximately six hours. The tour description also says you return to Mae Haad Pier around midday, so confirm the exact return time if you have onward transport.

What places does the boat visit?

The route includes Nangyuan Island and Japanese Reef Garden, followed by Tao Thong Bay, Mango Bay or Lighthouse Bay, Hin Wong Bay, Aow Leuk Beach, Buddha Rock, Free Beach, and Shark Bay.

Is snorkeling equipment included?

Yes. Snorkeling equipment and a life jacket are included, along with drinking water, coffee, tea, fresh fruit, and an onboard toilet.

Is the Koh Nangyuan entrance fee included?

No. Adults pay THB 250 per person and children pay THB 120 per person. The fee is separate from the tour price.

Does the tour include hotel pickup?

Round-trip hotel transfer on Koh Tao is included except for hotels at Mango Bay and Lighthouse Beach. People staying in those areas must arrange their own transport to the meeting point.