Basic Scuba Diver
3,500 ฿
Complete Beginners
1 Days 1 dive in the pool PLUS 2 dives in the sea # of Dives 12 Meters Max Depth
Discover World-Class Diving in Koh Tao – SSI SCUBA Courses & Fun Dives for Every Level
Welcome to Koh Tao, Thailand’s premier dive school for SCUBA adventures! Whether you’re looking to learn to dive on your SSI Open Water Course, advance your skills, or enjoy unforgettable fun dives at famous dive sites like Sail Rock, Chumphon Pinnacle, and Shark Island, we’ve got you covered. Our professional dive instructors, crystal-clear waters, vibrant coral reefs, and year-round warm conditions make Koh Tao the perfect place to start or continue your scuba diving journey.
Join us for safe, fun, and unforgettable underwater experiences!
Looking for Prices, Ready To Book?
OK want to get straight to the point? See our competitive pricing for diving and courses in Koh Tao.
Where do I start?Find the right Koh Tao diving course for you
Open Water to Divemaster
93,000 ฿
Complete Beginners
70 Days Unlimited # of Dives None Prerequisites
Open Water to Instructor
159,000 ฿
Complete Beginners
180 Days Unlimited # of Dives None Prerequisites
WElcome homeYour Ultimate Koh Tao Diving Adventure Starts Here
Big Blue Diving Koh Tao is one of Thailand’s best dive schools, offering world-class scuba diving experiences on the stunning island of Koh Tao. Whether you’re looking to learn how to scuba dive or advance your dive certifications, we have the perfect course for you.
We have Koh Tao’s Best SCUBA Diving instructors
Our expert team of certified instructors delivers professional scuba diving courses for all levels—from beginner Try Dives and Open Water certification to Advanced Open Water, Deep, Wreck, and Night Diving specialties.
Explore Koh Tao’s vibrant coral reefs and diverse marine life with confidence and safety. Whether you’re a first-time diver or a seasoned pro, Big Blue Diving Koh Tao is your gateway to unforgettable underwater adventures.
Learn Scuba Diving in Thailand with Koh Tao’s Top-Rated SSI Dive School
Big Blue Diving is recognized as Thailand’s best dive school and home to Koh Tao’s leading SSI scuba instructors. Whether you’re learning to dive for the first time or aiming to earn your next scuba certification, we offer safe, professional, and unforgettable scuba diving experiences.
As one of the most trusted SSI dive centers in Koh Tao, we are dedicated to marine conservation and sustainable diving. Our dive courses educate students not only in scuba skills but also in protecting Koh Tao’s vibrant coral reefs and marine ecosystems.
Safety first, always!
We prioritize your safety. Our dive school uses state-of-the-art scuba gear, follows strict international safety standards, and conducts regular maintenance and safety checks to ensure every dive is as secure as it is thrilling.
Entry level SCUBA courses with dedicated course boats
From Open Water Diver courses to advanced scuba certifications, Big Blue Diving offers world-class scuba training in Thailand’s most beautiful diving destination. Join us for an unforgettable underwater adventure and experience the best of scuba diving in Koh Tao.
Book your Koh Tao diving course today with Thailand’s best dive instructors!
TestimonialsWhat you wrote about us…
I had a great experience doing my open water course with big blue and got to see a bunch of amazing marine life in the process. Sarah was an excellent instructor and made the course easy to learn and fun throughout.
Joe Senior – April 2025
Big Blue is a fantastic place to learn diving if you’re a beginner on Koh Tao (I had zero experience before this) – excellent instruction and super well organised, the perfect place to learn really. Our instructor Francois made us feel really welcome and safe and took us on four amazing dives for our open water course – it was an incredible day over all, can’t fault it in any way!
Aaron – April 2025
This dive school is one of the most established and reputable in Koh Tao, and my experience truly reflected that. My instructor, Matt, was really great – highly skilled, knowledgeable, and always prioritizing safety, which made me feel confident throughout the dives. I completed my Open Water certification here and couldn’t have asked for a better introduction to diving.
Anais – March 2025
I completed my Open Water Diver course with Chris at Big Blue Diving. Chris was very professional and he was clearly extremely experienced with a calming presence in the water. We visited some lovely dive sights and got to see lots of cool sea life, including sea snakes and very large barracudas!
Luke – March 2025
Koh Tao’s Most Certified SSI Diving School
Why Learn to Dive with Big Blue Diving?
Join one of Koh Tao’s oldest and most respected dive schools, offering over 25 years of scuba diving excellence. At Big Blue Diving Koh Tao, we provide the best in dive education with highly experienced instructors, modern dive boats, and premium scuba gear. When you learn to dive with us, you become part of a global community of divers who share a passion for the underwater world.
Expert SSI Instructors:
Train with Koh Tao’s most experienced scuba diving instructors. Our certified SSI professionals bring decades of diving expertise, ensuring safe, fun, and effective learning for beginners and advanced divers alike.
Dedicated Dive Course Boats
With three custom-equipped dive boats, including one fully dedicated to training, students enjoy small groups, personalized instruction, and more time with instructors—perfect for mastering scuba skills.
Top-Quality Scuba Gear
Your safety is our priority. We provide well-maintained, high-quality diving equipment, ensuring a smooth and worry-free experience on every dive.
Global Diving Community
When you dive with Big Blue, you join an international network of scuba divers. Make lifelong friends, explore new dive destinations, and stay connected through your shared love for the ocean.
Island Life & Epic Sunsets
Koh Tao offers more than just world-class diving. Enjoy spectacular sunsets, vibrant nightlife, and an unforgettable island experience with fellow divers after your dives.
Start your scuba diving journey today with Big Blue Diving Koh Tao — Thailand’s most established and trusted dive school.
Why Choose Koh Tao for Your Next Diving Adventure?
Thinking about diving in Thailand? You have to check out Koh Tao. It’s one of those places that once you dive there, you’ll keep coming back. Whether you’re brand new to diving or already obsessed, this little island has something magical going on underwater (and on land too).
Perfect Diving Conditions for Training
If you’re thinking about learning to dive, you seriously couldn’t pick a better place than Koh Tao. The conditions here are perfect for beginners — we’re talking warm water, amazing visibility (you can often see up to 20 meters!), and gentle currents that make things way easier when you’re just figuring it all out. Plus, there are tons of shallow, protected bays that create a super safe and comfortable environment to practice those early skills like mask-clearing and buoyancy control. And let’s be honest: learning something new is way more fun when you’re surrounded by sunshine, tropical fish, and awesome instructors who keep things relaxed and fun. It’s like a scuba school meets a beach vacation — what’s not to love?
Bigger Schools of Fish Than You’ve Ever Seen
You might think you’ve seen some cool marine life before, but Koh Tao takes it to another level. Picture this: you’re diving along a coral reef and suddenly a giant school of barracuda swoops in, twisting and flashing silver all around you like an underwater storm. That kind of thing happens a lot around here. The waters around Koh Tao are packed with life — you’ll spot everything from angelfish and parrotfish to groupers the size of small dogs. And the big groups of fish? They’re not rare. You can often find yourself swimming through clouds of fusiliers so thick, you can’t even see your dive buddy. It’s wild, it’s beautiful, and it’s something that sticks with you long after you’ve dried off.
The Whalesharks
Let’s talk about the big one — literally. Koh Tao is known for its surprise visits from whale sharks, and trust us, it never gets old. These gentle giants show up mostly between March and May, and occasionally in October, gliding gracefully through the blue at spots like Chumphon Pinnacle or Sail Rock. And even though it’s never guaranteed, the moment you see one is pure magic — a mix of awe, adrenaline, and sheer joy. They’re harmless, curious, and totally unbothered by divers, which makes it an amazing encounter whether it’s your first or your tenth. Ask any diver who’s seen one, and they’ll tell you — it’s a bucket-list moment.
Balanced Island Life
One of the best things about Koh Tao? It’s not just about diving — the whole island is set up for living your best life. After your morning dives, you’ve got the rest of the day to chill at cozy beach bars, grab a coconut shake from a local café, hike up to a viewpoint for an epic sunset, or just nap in a hammock under the palms. There’s yoga if you want to unwind, Thai cooking classes if you’re feeling inspired, and plenty of great food whether you’re into cheap eats or fresh seafood dinners. It’s the kind of place where you make new friends fast and fall into a routine that doesn’t feel like a routine at all. Dive. Eat. Chill. Repeat. That’s Koh Tao life.
Want to Learn More About Koh Tao?
We’ve got tonnes of information on our website from our blog to our Koh Tao Section… Here’s a few links to start you off.
We’re so good at what we doWe never shut up about it
Check out the Big Blue Diving blog
Learning to dive on Koh Tao.
From wide-eyed backpackers wondering if fish bite (no), to nervous swimmers asking if you can scuba dive without knowing how to swim (you can, but we’d rather you didn’t), to travelers fresh off the ferry thinking the ocean is, quite frankly, a bit suspicious—learning...
Guided Diving on Koh Tao.
Guided Diving on Koh Tao: A Relaxed Approach to Incredible Diving Koh Tao, a tropical paradise known for its crystal-clear waters and vibrant marine life, is a dream destination for divers. Fun diving on Koh Tao offers a chance to explore some of the world’s most stunning underwater landscapes...
How to Become a Divemaster on Koh Tao from scratch.
Embarking on the journey to become a divemaster on Koh Tao is more than just an upgrade in scuba skills; it’s a lifestyle filled with adventure, camaraderie, and a fair bit of island humor. Known as the "Diving Mecca of the World," this idyllic Thai island boasts azure waters,...
Best Scuba Diving Agencies: What’s the Difference, and Does It Really Matter?
If you’ve ever Googled terms like “best scuba diving agencies” or “learn to scuba dive,” you’ll know the confusion that follows. PADI, SSI, SDI, NAUI, RAID, BSAC, CMAS, TDI... it can feel like you need to complete a course just to figure...
Swim for Sharks in Koh Tao: Legendary Charity Swim for Shark Conservation
It all began, as most great ideas do, with a beer. Around 16 years ago, as the sun dramatically set over the Gulf of Thailand, a group of Divemasters and Instructors sat at a local bar. When they weren't underwater, they did what they...
The SSI Divemaster Training Course on Koh Tao
The SSI Divemaster Course on Koh Tao isn’t just training—it’s a deep dive into the world of professional scuba diving, blending adventure, education, and just a pinch of aquatic humor. Nestled in the turquoise waters of Thailand, Koh Tao (meaning "Turtle Island") is the ultimate destination for aspiring divemasters....
Scuba Refresher: Pool vs. Sea – Which is Better?
Are you ready to get back in the water but feeling a bit rusty? A scuba refresher is the perfect way to regain your confidence and brush up on essential diving skills. But one question remains: should you do your refresher in the pool or...
Scuba Diving Certification on Koh Tao: Your Ultimate Guide to Learning to Dive
If you've ever wondered what it feels like to glide through crystal-clear waters surrounded by vibrant marine life, then Koh Tao, Thailand, is the perfect place to start your scuba diving journey. Often called the "Mecca of Diving," it is globally recognized as one of the most affordable and...
SSI vs SDI: Which Wreck Diving Course on Koh Tao?
Few scuba diving experiences are as thrilling—or as gloriously intimidating—as wreck diving. It's part underwater time capsule, part Indiana Jones adventure—but with less dust and more fish. Whether you're hoping to explore sunken ships, peer...
Become an SSI Dive Pro next month!
Become an SSI Dive Pro on the Instructor Training Course with Martin Lindquist at Big Blue Pro. Are you ready to take your passion for diving to the next level? Dreaming of a career that lets you live by the sea, meet...
The Origins of SSI on Koh Tao?
Twenty-odd years ago, Koh Tao was a place where time slowed down, dive boats hummed along the coastline, and the clink of tanks marked the rhythm of the day. Back then, there was no SSI on Koh Tao. The island’s diving scene was dominated by PADI. It wasn’t just...
From ‘Zero to Hero’ Divemaster Course
Imagine, if you will, a tiny speck of an island in the Gulf of Thailand, a place so idyllic it could have been dreamed up by a travel agent on a particularly creative day. Koh Tao, known as the "Turtle Island," is a diver’s paradise—or so the brochures tell...
