Snorkeling on Koh Tao: 7 Spots Actually Worth Your Time

I lived and worked as a scuba diving instructor on Koh Tao for just over four years, so I’ve spent more time in the water than on land. When I’m not diving, I’m usually out snorkeling. And over time I’ve learned which spots are actually worth your time and which ones just look good on Instagram.

Snorkeling on Koh Tao is a solid option if you don’t scuba dive — and honestly, even if you do. There are a few spots where you’ll have a better experience snorkeling than diving. Ao Leuk, for example, is one of the most reliable snorkel spots on the island and one of the few places where you can regularly see baby sharks in shallow water.

Snorkeling here isn’t world-class by Asian standards, but the visibility in the shallows can be incredibly clear, there’s coral everywhere, and it’s an easy, enjoyable snorkel. If you’re a beginner with realistic expectations, Koh Tao is a solid choice.

Is snorkeling on Koh Tao worth it?

• Is it worth it? Yes, but not everywhere.
• Best for: beginners, non-divers, and divers on a day off.
• Not for: anyone expecting pristine, world-class reefs.
• What stands out: easy shore access and the chance to see baby blacktip reef sharks while snorkeling.

If you do dive (or are thinking about it), I’ve also put together a full guide to diving on Koh Tao, including dive sites, courses, prices, and what it’s actually like to learn here.

01 – Aow Leuk

Ao Leuk is one of the few places on Koh Tao where the snorkeling is genuinely better than the diving. The bay is shallow, sandy, easy to access, and beginner-friendly. I like coming here to see the baby sharks, and it’s one of my go-to spots when I’ve got a few hours to spare and just want a relaxed snorkel.

Even on days when the sharks don’t show up right away, there’s still plenty to see. Coral and reef fish line both sides of the bay, and on calm days the visibility in the shallows can be super clear. It’s beginner-friendly and works well even if you’re not a confident swimmer.

The downside is the beach itself. It’s not always the cleanest, and I wouldn’t come here just to hang out all day. But other than that, Aow Leuk has the best snorkeling on Koh Tao for me.

02 – Sai Daeng Beach

Sai Daeng isn’t my favorite snorkeling spot on Koh Tao, but it is my favorite all-rounder when I want a relaxed beach day with some snorkeling. Because access is through a private resort, it’s usually much quieter here than around the corner at Shark Bay, and the beach itself is genuinely nice and taken care of.

There’s a restaurant and bar, plenty of shaded areas along the beach, and enough space to spread out without feeling crowded.

The snorkeling is decent rather than spectacular. The shallow water close to shore is fairly dead, so you’ll need to swim out toward the reef to see more life. When conditions are good, you can spot turtles and even the occasional blacktip reef shark.

If you want a place where you can snorkel, eat, relax, and not rush, Sai Daeng is hard to beat.

03 – Shark Bay

Shark Bay is one of the most reliable places on Koh Tao to see green sea turtles while snorkeling. If turtles are at the top of your list, this is where to go.

That said, it’s also one of the most crowded snorkeling spots on the island. You can access is through the Haad Tien Beach Resort with an entrance fee, and during the middle of the day it can feel busy both in and out of the water. The snorkeling itself is decent, but the experience is very different from quieter bays like Sai Daeng.

04 – Japanese Gardens

Japanese Gardens is one of the most beautiful places to snorkel around Koh Tao, especially if you’re into coral rather than chasing big marine life. The bay is shallow, sheltered, and filled with large coral formations that start just below the surface. On calm mornings, the visibility can be excellent, and it’s an easy, relaxed snorkel even for beginners.

What makes this spot special is the coral itself. It’s dense, shallow, and feels more intact than most shore-access bays around Koh Tao. Snorkeling here feels more like swimming through coral gardens than along a reef edge.

That said, Japanese Gardens gets busy — very busy. By late morning, snorkel and dive boats start stacking up, groups rotate through quickly, and the calm, quiet feeling disappears. I still love Japanese Gardens, but I usually avoid coming here later in the day for that reason.

05 – Tanote Bay

Tanote Bay is one of those places I keep coming back to because there’s always something going on underwater. I’ve snorkeled here plenty of times over the years, and it’s one of the more reliable spots on Koh Tao if you want to see a lot of fish without working too hard for it.

The big boulder in the middle of the bay is one of my favorite spots to snorkel here. It’s easy to reach, surrounded by reef, and full of fish. It’s especially good if you’re newer to snorkeling. It’s also where people climb up to cliff jump, which gives the whole bay a more energetic, fun vibe. I often start there, do a relaxed lap, and then swim out toward the walls if the water’s calm and I feel like a longer snorkel.

The walls on either side are really nice too, but they’re a longer swim and better if you’re comfortable in the water.

06 – Secret Spot: Mae Haad Shipwreck

This is one of the most underrated snorkeling spots on Koh Tao — and one of my personal favorites. How often do you get to snorkel a shipwreck without needing a boat or a guide?

The wreck sits in shallow water just a short swim from shore, at around 2–4 meters, which makes it easy to explore from the surface. I’m a bit biased because I love wrecks, but this one is genuinely fun. You can see the full outline, there’s plenty of fish hanging around it, and it feels very different from snorkeling Koh Tao’s reefs.

To find the wreck, head to Mae Haad and enter the water at the small beach near Sensi Paradise Resort. Snorkel along the rocky wall to the left, following it around the corner. After a short swim, the wreck appears below you in about 2–4 meters of water.

Most people don’t even know it’s here, so it’s usually quiet. It’s not the USAT Liberty Wreck, but for Koh Tao, this is about as close as you’ll get to snorkeling a sunken ship. The only real downside is that it’s unmarked, so you do need to stay aware of boat traffic and avoid snorkeling here if the sea is choppy.

07 – Lighthouse Bay

Lighthouse Bay is one of the quieter, less-visited snorkeling spots on Koh Tao, and when conditions are right, it’s really beautiful. The coral here is in better shape than in many of the easier-access bays, and the snorkeling is nicest along the wall and around the rocky outcrop, rather than right in the shallows.

That’s also what makes this spot less beginner-friendly. The best snorkeling isn’t close to shore, and access takes more effort and swimming. If you’re not confident in the water, there are easier and more enjoyable places to snorkel on the island.

Snorkeling Spots to Avoid

Not every bay on Koh Tao is worth snorkeling, even if it looks great in photos or shows up on every tour itinerary. These are the ones I usually tell people to skip — or only do under very specific conditions.

Mango Bay

Mango Bay gets mentioned everywhere, but honestly, it’s not what it used to be. The coral is in rough shape, there’s not much marine life left, and the snorkeling itself is pretty underwhelming compared to other bays on the island.

On top of that, you’ve got a steep, sketchy scooter ride to get there and often an entry fee, which makes it hard to justify. Unless you’re already on a boat tour that stops here, I’d skip it.

Hin Wong Bay (from shore)

Hin Wong is an impressive dive site, but it’s not a great choice for snorkeling from the beach. Most of the interesting reef is too deep or too far out, and the swim can take 20–30 minutes one way.

There’s also often heavy boat traffic here, which makes snorkeling near the surface uncomfortable and sometimes unsafe. If you’re on a snorkel boat that stops here, it’s absolutely worth it, but I wouldn’t recommend trying to snorkel Hin Wong from shore.

Map of Koh Tao’s Snorkeling Spots

I’ve added all the snorkeling spots mentioned above to a map below, including the ones I recommend skipping, so you can plan your days more easily.

Snorkeling Tours vs. Going on Your Own on Koh Tao

There are two good ways to snorkel on Koh Tao: join a tour, or go from shore. Neither is “better”, it just depends on how you travel.

A snorkeling tour makes sense if:

• You want to snorkel Japanese Gardens without arranging transport
• You don’t ride scooters
• You’re short on time and want to see multiple spots in one day

Tours are easy and efficient, but they’re also more crowded and fast-paced. You won’t linger long at any one spot.

Snorkeling on your own is better if:

• You’re comfortable riding a scooter
• You want fewer people around you
• You like snorkeling at your own pace

Most of the bays I recommend in this guide are easy to access by land, which is why this is usually my preferred option.

What I usually recommend

When friends or family visit me on Koh Tao, I usually suggest one snorkel tour to see Japanese Gardens, then snorkeling from shore on other days. It’s a good balance between convenience and actually enjoying the water without crowds.

If you want a well-run option, I usually book this Oxygen Snorkeling Tour, it covers the best spots and the guides actually take time to point things out instead of rushing people in and out.