REVIEW · KOH TAO
Snorkel Trip to Koh Nangyuan and Bays of Koh Tao By The Oxygen
Book on Viator →Operated by Oh-Hoo · Bookable on Viator
A day of calm water and coral views starts here. This Oxygen snorkel trip strings together multiple reefs around Koh Nang Yuan and Koh Tao, so you’re not stuck with just one single spot.
I like that it’s built for real snorkel time, with gear and life jackets ready to go. I also like that you get a full day flow with food on board, not a rushed half-tour.
One thing to consider: the best snorkeling depends on weather, and there’s a national park fee you pay on arrival.
You’re buying convenience, not just scenery. The Oxygen team runs a structured route from Mae Haad pier, adds transfers when possible, and builds in lunch so you’re not starving between swim sessions.
And because the day is set up as multiple stops, you get variety—yellow-striped fish moments, big-coral reefs, and the chance to spot sea turtles (and, on lucky days, blacktip reef sharks).
The downside is simple: you’ll be on a boat most of the time, and the group size can be large (up to 120), so you should be ready for a busy-but-organized day.
In This Review
- Key Points That Matter Before You Go
- Why Koh Nang Yuan and Koh Tao’s Bays Make One Great Snorkel Day
- Getting to the Boat: Pickup, Mae Haad Pier, and a 6–7 Hour Schedule
- On Board With Oxygen: What’s Included for a Smoother Day
- Stop-by-Stop: What You’ll Likely See and Why Each Bay Is Worth It
- Nang Yuan Island (First Look): Walk the Sand Bridge and Scope the Water
- Mango Bay (Brief Reset and Another Reef Chance)
- Ao Muang: Coral and Fish Time After Lunch
- Hin Wong Bay: Expect Lots of Yellow-Striped Fish
- Ao Leuk: Bigger Corals and Beautiful Fish
- Shark Bay: Turtles Possible, and the Best Luck Story
- Nang Yuan Island (Second Time): Japanese Garden Snorkeling and Closing Views
- Lunch, Drinks, and the Little “Don’t Be Miserable” Details
- Safety and Fitness Reality Check: Who This Trip Works For
- Price and Park Fees: Does $29.70 Really Add Up?
- Who Should Book This Snorkel Route (and Who Might Want Something Different)
- Should You Book the Oxygen Koh Nang Yuan and Bays Tour?
- FAQ
- How long does the snorkeling trip last?
- Is pickup from my hotel included?
- What snorkeling gear is provided?
- Do I need to pay anything for the national park?
- Are there multiple snorkeling stops?
- What will I do at Koh Nang Yuan?
- Who shouldn’t join this tour?
Key Points That Matter Before You Go

- Multiple snorkeling stops around Koh Nang Yuan and Koh Tao, with the exact number shifting based on weather
- Gear and life jackets included, which makes it easier for first-timers and helps you start fast
- Thai lunch box plus drinks on board, so you’re fueled for the second half of the day
- Boat comfort basics: toilet on board and a roof terrace to catch a break out of the sun
- Koh Nang Yuan’s sand bridge and viewpoints are part of the day, not just underwater time
- Park fee not included: plan on paying entry on the day to access Nang Yuan area spots
Why Koh Nang Yuan and Koh Tao’s Bays Make One Great Snorkel Day

If you’ve only got a day or two on Koh Tao, this is the kind of plan that makes your time count. Instead of bouncing between separate half-day tours, you hit several snorkeling areas and also spend time on land at Koh Nang Yuan.
What makes it especially appealing is the mix of underwater and on-island sights. Koh Nang Yuan is famous for the sand bridge connecting the islands, and that’s the rare snorkeling add-on that also gives you a classic viewpoint moment.
The route also makes sense if you want variety, not just repetition. One stop can be about fish density, another about coral size, and another about the chance for turtles cruising close to the surface.
You can also read our reviews of more tours and experiences in Koh Tao.
Getting to the Boat: Pickup, Mae Haad Pier, and a 6–7 Hour Schedule

The tour typically runs about 6 to 7 hours. You’ll either have pickup around 09:00–09:30 or 11:00–11:30 (depending on the departure), and then you head out from Mae Haad pier.
Departures are set for roughly 10:00 or 12:00 to Koh Nang Yuan island, which helps you get an early start on the water. Then you work your way through the snorkeling circuit and return back to the meeting point afterward.
If you stay on Koh Tao, the two-way transfer is a big part of the value. The tour includes resort pickup/drop-off in most cases, with a note that transfers don’t apply for Mango Bay and Lighthouse Beach.
One practical note: the tour has a minimum of 10 people to operate. If they can’t run it due to low bookings, you’ll be offered a different date, an alternative tour, or a full refund.
On Board With Oxygen: What’s Included for a Smoother Day
This is not a bare-bones “jump in and hope” type of trip. You get all equipment included, including mask and snorkel, plus life jackets for all passengers.
The boat setup is also designed for comfort between swims. There’s a toilet on board, and you can take shade or a breather on the roof terrace while the boat moves to the next stop.
I also like that the crew uses a sounder GPS system. That’s the kind of behind-the-scenes detail you won’t brag about later, but it helps make navigation and timing more reliable.
Since the day includes multiple stops, you’ll appreciate the pacing that comes from having lunch and drinks handled on board. The tour provides a Thai-style lunch box, plus cold water, coffee, and tea throughout the trip.
Stop-by-Stop: What You’ll Likely See and Why Each Bay Is Worth It

This day is structured around several snorkeling points, with the final count of stops depending on weather. Still, you can plan your expectations around the named areas and the typical underwater focus at each one.
Nang Yuan Island (First Look): Walk the Sand Bridge and Scope the Water
Koh Nang Yuan island is the heart of the trip, and you get real time there. You can walk across the sand bridge that connects the islands, which is one of those simple but memorable sights—especially if you like photos and that “how is this real?” feeling.
You also have the option of heading to a viewpoint for a wider look over the islands. In addition, this area ties into snorkeling time later in the day, including the famous Japanese Garden snorkeling spot.
Why this stop matters: you’re not only chasing underwater moments. You get to understand the geography of the area, which makes the snorkeling feel more like exploring rather than just swimming around.
Mango Bay (Brief Reset and Another Reef Chance)
After the first land portion, the route brings you toward the reef circuit. Mango Bay is listed as one of the snorkeling points, and the timing suggests you’ll spend a focused chunk in the water before moving on.
Because the tour operates based on conditions, the big idea here is simple: you’re getting another chance at coral and tropical fish without having to change plans yourself.
Ao Muang: Coral and Fish Time After Lunch
Lunch happens after you get back to the ship, and then you head to the next snorkeling point: Ao Muang. This stop is described as a place for beautiful corals and fishes.
I like how this timing works. You snorkel, eat, and then snorkel again, so you’re not trying to push through the afternoon on an empty stomach.
If you’re new to snorkeling, this is also a nice rhythm: swim, float, take a breath break, eat, and then repeat.
Hin Wong Bay: Expect Lots of Yellow-Striped Fish
Next up is Hin Wong Bay, known for millions of yellow-strip scad. That’s a very specific “you’ll know it when you see it” type of underwater scene.
This is the kind of stop that’s great if you want fish density and motion in your view. Even if you’re not hunting for big dramatic animals, this is where the water can feel alive.
Also, since the guide is actively managing the day, you’ll likely get reminders about reef etiquette. Good guides will keep people from standing on coral, and that matters for the health of the snorkeling spots.
Ao Leuk: Bigger Corals and Beautiful Fish
Then you go to Ao Leuk. This one is singled out for big-size corals and beautiful fish.
Why it’s worth your time: coral size often changes how the reef looks when you’re snorkeling. Smaller coral can be pretty, but bigger coral shapes can give you more structure in your underwater view, which tends to make photos and first impressions more satisfying.
The stop here is shorter than some others (around 40 minutes), so it’s a “make the most of it” moment. If you’re prone to rushing, remind yourself to slow down and scan.
Shark Bay: Turtles Possible, and the Best Luck Story
Finally comes Shark Bay, the last snorkeling point on the route. This stop has a specific highlight: you may see green turtles, and on a lucky day, blacktip reef sharks.
That’s a strong reason to keep your head up and your swim slow. When turtles or sharks are around, it’s often because the water and conditions are right—not because you’re sprinting across the reef.
Even if you don’t see sharks, turtles alone can be a once-in-a-while payoff. This stop is the one where you’ll want to take your time and let your eyes adjust.
Nang Yuan Island (Second Time): Japanese Garden Snorkeling and Closing Views
At the end of the circuit, the itinerary returns to Nang Yuan Island again. This is where you can do the sand bridge stroll again or switch it to a final look from the island.
The snorkeling reference here includes the Japanese Garden snorkeling area. Note that the admission for this specific island segment is marked as not included in the listing details, and you’ll also want to budget for the park fee payable at entry.
This second visit is valuable because it gives you a final chance to connect what you saw above the water with what you chased below it.
Lunch, Drinks, and the Little “Don’t Be Miserable” Details

A Thai lunch box is included, plus cold water. You’ll also get coffee and tea while you’re on board.
In practice, that’s what separates a good snorkeling day from a painful one. Waiting to eat until you’re completely done with the water can be rough, especially when the day runs long enough to dry you out.
I also appreciate that the day is set up so you’re not forced to buy snacks at random stops. The included drinks reduce decision fatigue, and they help you stay hydrated between snorkels.
One more practical perk: the boat includes a toilet and a roof terrace. When you’re on and off the water multiple times, those basics keep the day from feeling like a constant scramble.
Safety and Fitness Reality Check: Who This Trip Works For

This tour provides life jackets for everyone, and snorkeling gear is included. That combination helps a lot when you’re not bringing your own setup.
That said, the trip includes standard health limits. If you’re pregnant, or if you have high blood pressure, heart disease, or bone diseases, it’s not recommended to join.
Weather is another non-negotiable. The experience requires good weather, and if conditions are poor, you’ll be offered a different date or a full refund.
The guide and crew also matter. One theme you’ll want to look for in a well-run Koh Tao snorkel day is reef respect: listening for instructions about not standing on coral makes the snorkeling better and keeps the reef healthier.
Price and Park Fees: Does $29.70 Really Add Up?

At $29.70 per person, this tour is priced low enough that it feels like a “logistics value” deal. You’re paying for a coordinated boat day, multiple snorkeling stops, and the essentials—gear, life jackets, guide support, and a lunch box—without needing to arrange transportation or rent equipment separately.
Two key cost considerations:
- The national park fee isn’t included. It’s listed as 250 THB per adult and 150 THB per child, payable at point of entry.
- Some snorkeling areas may still involve additional access costs depending on where entry is required, especially around Nang Yuan.
Even with the park fee added, you’re usually still better off than paying separately for a private boat, renting gear, and then finding lunch. This is the kind of trip that’s “affordable because it’s organized,” not because it’s cutting corners.
Who Should Book This Snorkel Route (and Who Might Want Something Different)

You’ll likely enjoy this tour if you want:
- A structured day of snorkel stops, not planning your own boat hopping
- Options for both on-island views (sand bridge, viewpoints) and underwater time
- A day that works for people with different snorkeling comfort levels, since the gear and life jackets are included
It’s also a good fit if you like guided explanation. The trip includes an English-speaking guide trained for this kind of activity, and that helps with both safety and making sure you don’t miss the best parts of each stop.
On the other hand, if you hate boat time or you’re sensitive to crowd flow, you may find a large max group (up to 120) a little intense. You can still have a great day, but you’ll want to go in with realistic expectations and a calm mindset.
Should You Book the Oxygen Koh Nang Yuan and Bays Tour?
I’d book it if your Koh Tao plan needs one confident, low-stress snorkel day that covers a lot of ground. The combination of multiple snorkeling stops, included gear and life jackets, and a real lunch makes it practical.
I’d also book it if Koh Nang Yuan is on your must-see list. The sand bridge and Japanese Garden snorkeling angle are strong reasons to choose this specific style of tour over a single-spot reef run.
Skip or think twice if you’re dealing with health restrictions like high blood pressure or heart disease, or if you know you’ll be unhappy with weather-driven changes. Also factor in the park entry fee so there are no surprise moments.
If you want a day that mixes coral time with island views—and you’d rather be guided than figuring out boats yourself—this Oxygen route is a solid choice.
FAQ
How long does the snorkeling trip last?
The duration is listed as 6 to 7 hours (approx.).
Is pickup from my hotel included?
Pickup is offered. The tour includes 2-way transfer at your resort, except for Mango Bay and Lighthouse Beach.
What snorkeling gear is provided?
All equipment is included, including a mask and snorkel. Life jackets are also available for all passengers.
Do I need to pay anything for the national park?
Yes. A national park fee is not included: 250 THB per adult and 150 THB per child, paid at the point of entry.
Are there multiple snorkeling stops?
Yes. The tour visits five snorkeling spots, though the exact stop count depends on weather.
What will I do at Koh Nang Yuan?
You’ll have time on Koh Nang Yuan island, including the sand bridge connecting the islands and access to a viewpoint. Japanese Garden snorkeling is mentioned as part of the day. Admission for the Nang Yuan portion is marked as not included.
Who shouldn’t join this tour?
It’s not recommended for guests who are pregnant or have high blood pressure, heart disease, or bone diseases. The tour also requires good weather to run.



















