Koh Tao snorkeling gets real here. I like the crystal-clear, shallow water at Koh Nang Yuan and how the crew (people like Co Coa, Tiny, and Lucky) works hard to help you see turtles, plus you get free underwater photography. The one trade-off: you’re on a long boat day and the route can shift if weather gets choppy, so a stop like Mango Bay might get swapped out.

This tour hits a smart mix of reefs and beaches, with stops that keep the day moving and the water time generous for a single-day plan. You also get a Thai-style lunch box onboard, plus seasonal fruit and unlimited water, coffee, and tea—solid comfort when the sun is doing its thing.

You’ll start with hotel pickup on Koh Tao, then head out on a traditional-style boat to snorkel several bays around the island’s northwest side. Just note: the Nang Yuan Island entrance fee isn’t included, so factor that in before you go.

Key Highlights You’ll Care About

• Koh Nang Yuan’s shallow snorkeling: clear water over reefs where turtles are often spotted
• A full circuit of multiple bays: more chances at fish, corals, and sea life in one trip
• Thai lunch box onboard: you eat between snorkel sessions without losing the day
• Crew-led spotting + GoPro photos: they help you get in the right place and take pictures for you
• Extra emphasis on safety: life jackets, clear instructions, and strict rules about not touching marine life

Koh Nang Yuan: the tiny islets where snorkeling feels easy

Koh Nang Yuan is a group of three tiny islets just off Koh Tao’s northwest coast, and the big appeal is the water. This is the part of the day where the snorkeling often feels most relaxed: shallow, clear, and packed with reef life you can actually enjoy without fighting currents. Expect coral gardens and lots of tropical fish, and keep your eyes open for turtles cruising through the shallows.

Time-wise, you’ll spend enough time here to get your bearings and settle into snorkeling mode. There’s also a sightseeing element and a short cruise segment before the main time in the area, which helps if you want a quick look at the viewpoint views before you suit up.

One practical note: the Nang Yuan Island entrance fee is not included. If you hate surprises, it’s worth planning for this extra cost ahead of time so your day stays smooth.

Mango Bay lunch on the boat: real food, not just a snack

Mango Bay is where the schedule shifts from snorkel focus to refuel. You’ll get a longer onboard window—about 75 minutes—so you can swim again and still eat without rushing. The lunch is a Thai-style lunch box set, plus seasonal fresh fruit.

What I like about this setup is that the meal is part of the trip rhythm, not an interrupted detour. You’ll eat onboard, then jump back in (or take a breather) while the boat continues the day.

You also get unlimited drinks like king water, coffee, and tea, and the boat tends to offer snacks such as biscuits. Some people report that soft drinks and beer can be bought onboard, but alcohol isn’t included in the base price.

If you’re someone who gets cranky when food is delayed or minimal, this portion matters. It’s a simple upgrade to make a full-day snorkel plan actually enjoyable.

Ao Hin Wong and Ao Leuk: reef hopping that keeps the fish coming

After lunch, the tour keeps moving to two more reef-heavy stops: Ao Hin Wong and Ao Leuk. Each one includes about an hour of swimming and snorkeling, so you get repeated chances to spot turtles and sea life without one location dragging the entire day.

This is where you’ll likely spend more time scanning coral edges and ledges. The guide’s job here is more than just pointing. They help you find the right swim lanes and keep the group together so you don’t spend your best underwater minutes chasing your own bearings.

One thing that’s consistent in the experience: you’re not just thrown in. Guides are active in the water and help people see what they came for. That matters a lot in Koh Tao snorkeling because visibility can shift, and your angle to the reef changes everything.

You’ll also deal with the reality of a reef day: after a couple of snorkel sessions, your shoulders and lower back can feel it. Plan to take it easy between swims, keep your towel handy, and change out of wet swimwear as soon as you can.

Shark Bay: the spot for reef sharks, plus a photo moment

Shark Bay is the later-day highlight for people who want more than fish and turtles. You’ll also have a photo stop here, then about an hour to snorkel and view marine life.

This is one of the places where sightings are often described in a more exciting way—people report black tip reef sharks and multiple turtle encounters during similar days. You shouldn’t treat that as guaranteed, but the reason Shark Bay gets its reputation is that it’s a strong candidate area for bigger wildlife sightings.

The photo stop also means you’re not only underwater hunting. You get a moment to regroup, check your gear, and reset before the final swim segment.

If you’re a shutterbug, the good news is that the tour includes free underwater photography. A lot of the value isn’t just that the crew takes pictures—it’s that they try to place everyone so you end up with usable shots, not just random blur.

How the crew’s in-water guidance changes your odds

The most praised part of this tour is the people running it. Names that come up often include Co Coa, Tiny, and Lucky—and the consistent theme is that the guides actively help you succeed underwater.

You’ll get clear snorkel instructions before each session, and guides swim with the group to point out what you might be seeing. Multiple people mention that they tried hard to locate turtles, and they also made sure everyone had a few underwater photos taken. That’s a big deal for first-timers, and it’s a comfort for anyone who doesn’t want to feel lost in the water.

Safety is part of the package too. You’ll get snorkeling equipment (mask and snorkel) and life jackets. There are also clear rules like not touching marine life and not bringing luggage or sharp objects. It’s not strict for the sake of strictness—it’s there because reef ecosystems don’t bounce back quickly from careless contact.

One extra service that’s consistently mentioned: free underwater GoPro photos/videos, typically shared after the trip (some people specifically note WhatsApp-style sharing). Whether you’re posting or just saving memories, it’s a way to turn a half-remembered swim into something you’ll actually want to look at later.

Equipment, swim fitness, and a few non-glamorous tips that help

This is an all-day outing on the water. You’ll want to pack like it’s a full day at the beach plus a snorkel workout.

What’s provided: snorkeling gear (mask and snorkel) and life jackets. What you should bring:

• swimwear
• a towel
• personal medication
• sunglasses

The tour is not suitable for wheelchair users, people over 70, or pregnant women. Also, you’ll want to be a confident swimmer. Some descriptions point out that you may be out of your depth for portions of the day, so don’t show up assuming snorkeling is automatically easy.

My biggest practical advice based on real discomfort people reported: sunscreen is not optional. Bring a lot, and consider a rash vest. One person noted getting pretty sunburnt even on a tour day, and another suggested reapplying after you dry off—especially on your back, which cooks fast when you’re sunning between sessions.

And yes, you’ll likely be tired by the end. That’s normal. If you pace yourself—slow swims, breathe steadily, and take breaks—you’ll enjoy the marine life more instead of rushing through it.

Price and value: why $27 feels like a bargain

At $27 per person for a 7-hour day, the value comes from what’s included—not just the low base price.

Included features you should treat as real savings:

• hotel pickup and drop-off on Koh Tao (with drop-off exceptions at Mango Bay and Lighthouse Beach)
• a guide
• snorkeling equipment and life jackets
• unlimited water, coffee, and tea
• Thai-style lunch box plus seasonal fruit
• accident insurance
• free underwater photography service

The items not included:

• Nang Yuan Island entrance fee
• alcoholic drinks

That entrance fee can nudge the total cost, but it still usually leaves this tour competitive when you compare it to tours that charge extra for equipment, guidance, and photos.

The other value angle is time. You’re getting a multi-bay route with several snorkeling chances. On Koh Tao, “I only snorkeled once” is the fastest way to feel like you didn’t use your day well. This format gives you multiple shots at turtles and reef fish, and you’re not stuck waiting around at just one beach.

Weather can change things—and the best tours handle it well

On Koh Tao, weather and sea conditions can be the difference between a smooth day and a rough one. This tour explicitly says locations and activities can change depending on weather.

That flexibility shows up in real ways. Some people describe plans adapting on the fly when conditions were less friendly, with guides taking the group to nicer areas rather than forcing a bad situation. Others mention that Mango Bay might be skipped when it’s windy and wavy on that side of the island, with extra time at other stops to keep the day worthwhile.

So when you’re packing your mindset, bring “plan A” and “plan B” energy. You don’t need to panic about changes. You just need to understand that the sea controls the schedule sometimes—and good crews manage that calmly.

Who should book this snorkeling tour

This is a great match if:

• you want multiple snorkel stops in one day without paying for a “private boat” style price
• you care about seeing turtles and you like a guide who actively helps you find them
• you want free underwater photos so you don’t leave with only blurry phone memories
• you prefer a smaller, more relaxed feel compared with very large boat crowds (people often describe it that way)

It’s less ideal if:

• you’re mobility-limited or in any category listed as not suitable (wheelchair users, over 70, pregnant women)
• you’re a very nervous swimmer and might struggle if you’re out of depth
• you want alcohol included (it’s not)

Also, if you’re crossing from Koh Samui or Koh Phangan, plan your ferry details carefully. The transfer in this package is only for tourists staying on Koh Tao or arriving at Koh Tao Pier, and ferry tickets aren’t included for those traveling from other islands. If you’re trying to catch a tight connection, build a little buffer into your plan.

Should you book Royal Mariblue’s Koh Nang Yuan and Hidden Bays tour?

I’d book it if your priority is snorkeling value: several bays, a real onboard lunch, and a crew that helps you actually see marine life—especially turtles—while taking free underwater photos. At $27 with equipment and lunch included, it’s priced like a budget-friendly day trip, not a stripped-down experience.

Skip it or reconsider if you’re uncomfortable with a full day on a boat, need more accessibility than this tour supports, or you’re not confident in the water. Also factor the Nang Yuan Island entrance fee so your final cost doesn’t surprise you.

If you like your travel days practical—get picked up, snorkel multiple sites, eat well, go home with photos—this is a strong Koh Tao choice.

FAQ

What’s included in the tour price?

You get hotel pickup and drop-off on Koh Tao (with drop-off exceptions at Mango Bay and Lighthouse Beach), a guide, snorkeling equipment (mask, snorkel, life jackets), unlimited king water plus coffee and tea, a Thai-style lunch box and seasonal fruit, accident insurance, and free underwater photography service.

Do I need to pay the Nang Yuan Island entrance fee?

Yes. The Nang Yuan Island entrance fee is not included, so you’ll need to budget for it.

Is lunch included, and what kind of lunch is it?

Lunch is included as a Thai-style lunch box set served onboard, along with seasonal fresh fruits.

Are alcoholic drinks included?

No. Alcoholic drinks are not included.

Will I get underwater photos taken during the tour?

Yes. There is a free underwater photography service. People also mention GoPro-style photos/videos shared after the trip.

How long is the tour?

The duration is about 7 hours.

What if the weather is rough?

Locations and activities can change depending on weather conditions. Guides may adapt the route to keep the day enjoyable and safe.

What should I bring for snorkeling?

Bring swimwear, a towel, personal medication if needed, and sunglasses.

Can I cancel for a full refund?

Yes, you can cancel up to 24 hours in advance for a full refund.

Is the tour suitable for everyone age-wise?

No. It’s not suitable for wheelchair users, people over 70, or pregnant women.