Koh Tao is famed for its crystal-clear waters, abundant marine life, and laid-back island vibe—making it a top destination for anyone eager to explore underwater or enjoy spectacular vistas. Whether you’re a first-timer or an experienced diver, the island offers a wide variety of tours that cater to all interests and skill levels. We especially love the Open Water Course, which packs in comprehensive training in just three days, perfect for those ready to become certified divers (see details here). The Snorkelling Tours provide quick, gorgeous escapes to see turtles and sharks, and the Full Day Treasure Hunt turns sightseeing into a lively adventure. Koh Tao’s charm is that it offers both relaxing and adrenaline-packed options, all set against unforgettable scenery.
Quick Overview
Our list features diving courses like the Open Water Course, intro dives such as the Basic Diver, and advanced certifications like the Advanced Open Water. You can also explore the island’s underwater world on snorkeling trips (see snorkeling options) or hop on a full-day island adventure like the Treasure Hunt. For those who prefer land-based exploration, the Private Road Trip offers stunning viewpoints and scenic drives. Below, we detail each of these tours to help you pick the best fit for your Koh Tao experience.
1. Open Water Course
Koh Tao’s reputation as a diving paradise hinges on its accessible, top-quality training. The Open Water Course is the cornerstone for anyone wanting to learn to dive, with a 5-star rating from 191 reviews. This course takes roughly 2 days and 12 hours, during which you’ll gain the skills, knowledge, and confidence to dive safely to 18 meters. The instructors excel at making beginners comfortable, focusing on safety and fun. The course includes classroom learning, confined water practice, and 4 open-water dives off Koh Tao’s reefs. With a price of $355.13, it offers excellent value considering it’s the first step to becoming a certified diver, opening doors worldwide.
What makes this course stand out is its focus on learner confidence: many students report feeling well-prepared, especially when paired with experienced instructors. The certification you earn is recognized globally, which is perfect if you plan to travel after Koh Tao. The only caveat is that the schedule is quite tight—if you prefer a more relaxed pace, consider the La Bombona Open Water Course instead.
Bottom Line: The Open Water Course is ideal if you want comprehensive training in a short time and value highly-rated instruction. It’s a solid choice for those serious about diving.
2. Basic Diver ( One Day Experience)
For many newcomers, just getting a taste of the underwater world is enough. The Basic Diver experience is perfect if you want to try scuba diving without committing to a full course. This one-day adventure includes a 40-minute theory session, followed by a shallow dive at 0-5 meters and optionally a second dive to 12 meters for those who want more. The small group size (maximum 4 per instructor) ensures personalized attention, and the reviews highlight how patient and supportive the instructors are, even for nervous beginners.
Priced at $122.76, it offers a sweet spot for those with limited time or budget but eager to see marine life up close. Expect to see tropical fish and coral, with the chance to go deeper if you choose. It’s especially suited for travelers who want to get an authentic underwater experience without the long-term commitment.
Bottom Line: The Basic Diver is a fantastic intro for nervous or time-constrained travelers wanting a quick but memorable underwater experience.
3. Advanced Adventurer – 2 days (Advanced Open Water)
If you’ve already got basic diving skills and want to explore more challenging sites, the Advanced Adventurer course is a natural choice. Spread over 2 days, this program offers five dives, including a deep dive up to 30 meters, and covers specialty skills like buoyancy and navigation. The course is designed to broaden your expertise, making you more confident and capable underwater.
During reviews, divers praise the course for offering flexibility—conditions determine whether you get all five dives in 2 or 3 days. It’s perfect for those wanting to build their skills with a variety of specialties. The cost of $314.78 is reasonable given the depth of experience and the certification upgrade it provides. Plus, you can tailor the dives to your interests—whether underwater photography or night dives.
Bottom Line: The Advanced Adventurer is best suited for certified divers looking to extend their skills and dive deeper around Koh Tao’s reefs.
4. La Bombona Diving Koh Tao Open Water Course
If you prefer a more leisurely pace, La Bombona’s Open Water Course spans 4 days and includes all necessary gear, classroom time, pool practice, and four ocean dives. It’s a popular choice for travelers who want a thorough introduction to diving, with a focus on safety and fun. Their small class sizes and experienced instructors help beginners feel confident in the water.
One reviewer notes that the course prepares you fully for diving anywhere in the world, and the inclusion of both classroom and practical sessions enhances learning. At $409.21, it might be pricier, but the extended duration allows more time to absorb skills and explore Koh Tao’s reefs. If you’re seeking a relaxed, comprehensive training experience, this course is a strong contender.
Bottom Line: La Bombona’s Open Water Course is ideal for newcomers who prefer a slower, more detailed learning process, and it guarantees certification upon completion.
5. Become certified diver in 3 days – PADI Open Water Diver course on Koh Tao
The classic PADI Open Water Diver course is a traveler favorite, taking about 3 days, with a focus on practical and theoretical knowledge. The program balances classroom learning with four open-water dives, including a trip to Nang Yuan Island for confined practice and reef exploration. The price of $336.50 makes it accessible, and many reviews highlight the engaging instructor, Dominik Maier, who makes learning fun and accessible.
The course culminates in a PADI certification you can use worldwide. The detailed itinerary includes theory, confined water exercises, and actual ocean dives at prime sites like Japanese Garden. The included logbook helps track your progress, and the location is within easy walking distance from the pier—convenience counts.
Bottom Line: This course is perfect for travelers wanting a certification in just three days without sacrificing quality or experience.
6. Fun Diving Packages (Certified Divers)
For those already certified, Fun Diving Packages offer the chance to explore multiple dive sites in one day. The small-group trip includes boat transfers, gear, and lunch, making it a hassle-free way to tick off several reefs and sightings. Many reviews point out the knowledgeable guides and the opportunity to see marine life such as turtles and colorful fish.
At $69.25 per person, it’s a good value for a full day of scuba in Koh Tao’s famous waters. This tour suits certified divers looking to maximize their diving time without the fuss of organizing logistics themselves.
Bottom Line: The Fun Diving Packages are excellent for experienced divers eager to see more of Koh Tao’s underwater world in comfort.
7. Full Day Treasure Hunt on Koh Tao
For a mix of exploration, team-building, and adventure, the Full Day Treasure Hunt transforms sightseeing into a lively quest. In six hours, teams solve clues across the island, visit beaches and viewpoints, snorkel, and enjoy lunch and drinks. The tour includes puzzles, hikes, and marine encounters, as well as a visit to secret coves. Many reviewers describe it as “full of adventure and challenges,” with friendly guides like Amie enhancing the experience.
Priced at $62.96, it’s an affordable way to see Koh Tao from multiple angles—land, sea, and sky. This tour is perfect for active travelers who enjoy puzzles and group fun.
Bottom Line: The Treasure Hunt is a lively, interactive option for families or groups seeking a full-day of varied activities.
8. Premium Snorkel Tour to the Bays of Koh Tao onboard the Oxygen
Snorkeling is one of the easiest ways to enjoy Koh Tao’s underwater beauty. The Premium Snorkel Tour on the Oxygen is rated 5 stars by 77 travelers. It visits spots like Freedom Bay, Buddha Rock, Shark Bay, and Tao Thong Bay, with a small group of 25 people. The tour includes sandwiches, fresh fruits, and panna cotta, plus views of marine life from the boat.
The highlight is the well-maintained, less crowded boat and the variety of snorkeling stops, ensuring you see turtles, sharks, and vibrant coral. Many reviewers praise the crew’s professionalism and the quality of the lunch. It’s a perfect option if you prefer a relaxed, guided snorkeling experience.
Bottom Line: The Snorkel Tour onboard Oxygen offers an intimate, well-organized trip to Koh Tao’s top snorkeling spots in comfort.
9. Snorkelling Trip 5 Island Tour Around Koh Tao and Koh Nang Yuan
This snorkeling-focused tour visits five different sites, including the famous Koh Nang Yuan and Mango Bay. It’s a 7-hour trip with included transfers and a delicious Thai lunch. The trip is praised for its smooth organization and the many spots visited, from coral gardens to secluded bays. Reviewers mention seeing turtles, blacktip reef sharks, and impressive marine life, emphasizing the diversity of sites.
The tour is suited for those who want a comprehensive snorkeling experience without the hassle of planning. The boat features restrooms and a roof terrace for relaxation. At $26.57, it offers excellent value for a full-day, multi-site adventure.
Bottom Line: The 5 Island Snorkeling Tour is perfect for snorkelers who want variety and convenience.
10. Try Scuba Diving
For first-timers eager to feel the thrill of breathing underwater, the Try Scuba Diving experience is a standout. It includes two dives—one shallow and one at 12 meters—designed for absolute beginners. The program lasts about six hours and features all gear and safety briefing by experienced instructors like Honey, who make nervous divers feel at ease.
Many reviews rave about how spectacular the water and marine life are, with first-time divers enjoying the sense of achievement. It’s an ideal way to dip your toes into the underwater world without the full commitment of a certification course.
Bottom Line: The Try Scuba Diving experience is perfect for those wanting a quick, memorable introduction to scuba.
11. Snorkel Tour to Koh Nangyuan and the hidden bays of Koh Tao onboard the Oxygen
This snorkeling tour offers access to lesser-known, secluded bays. It includes visiting Koh Nangyuan and snorkel stops at bays like Ao Leuk and Ao Hin Wong, avoiding crowds and revealing Koh Tao’s hidden treasures. Travelers love the opportunity to explore almost untouched marine environments and the flexibility of choosing morning or afternoon departures.
The trip features a Thai lunch and hassle-free transfers. Reviewers frequently mention the pristine reefs filled with colorful fish and the peaceful atmosphere away from tourist hotspots, making it ideal for snorkelers seeking serenity and marine diversity.
Bottom Line: The Secluded Bays and Koh Nangyuan Snorkel Tour is best for those seeking tranquility and less crowded snorkeling sites.
12. CocoTipAdventures and Snorkel with Meals-BBQs-Cocktail-Sunset
For a relaxed day combining snorkeling, good food, and sunset views, Coco Tip Adventures is a top pick. The tour includes snorkeling at rich marine spots, a barbecue lunch, cocktails, and the chance to watch the sunset from the boat. Rated 5 stars by 36 reviews, this tour balances fun with comfort.
Many reviewers mention the intimate feel—only about 20 people—plus the friendly, helpful crew. The barbecue and refreshments are a highlight, and snorkeling gear is provided, so you just relax and enjoy. It’s suited for travelers wanting a casual, social experience.
Bottom Line: The Snorkel & Sunset BBQ Tour offers a peaceful, scenic way to enjoy Koh Tao’s marine life and evening views.
13. Snorkel Trip to Koh Nangyuan and Bays of Koh Tao By The Oxygen
This 6- to 7-hour snorkeling tour emphasizes exploring multiple sites, including Koh Nangyuan and several hidden bays. It includes snorkeling gear and a Thai lunch, with visits to reefs where you can see colorful fish and coral formations. Reviewers frequently mention the variety of spots and the excellent organization.
The trip is perfect for those who want to see as much marine life as possible while avoiding the crowds. It’s ideal for travelers who enjoy snorkeling but also want some time to relax on the boat.
Bottom Line: The Bays and Koh Nangyuan Snorkel Tour is a comprehensive choice for exploring Koh Tao’s underwater diversity.
14. PADI Discover Scuba Diving in Koh Tao – half day and two dives
This introductory scuba experience allows you to explore marine life on two dives without needing certification. It lasts about six hours and includes all gear and safety briefings by professional instructors. Many reviews highlight how spectacular the water is and how this experience makes people eager to pursue full certification.
It’s perfect for travelers curious about scuba but unsure if they want to commit long-term. The small group setting ensures individual attention, and the dives are in Koh Tao’s vibrant reefs, with chances to see turtles and tropical fish.
Bottom Line: The Discover Scuba Diving program is ideal for first-timers wanting a full immersion experience in underwater exploration.
15. Koh Tao : Private Road Trip To 8 Famous Places
If land-based exploration suits your style, this private road trip covers eight of Koh Tao’s most breathtaking viewpoints and beaches. The tour is customizable, so you can linger at your favorite spots and skip others. Travelers rave about the stunning vistas, with some mentioning the guide’s expertise and helpfulness.
The trip lasts around six hours and costs $101.84 for up to four people. It’s perfect for couples or small groups wanting a flexible, scenic tour without the rush.
Bottom Line: The Private Road Trip is perfect for those who want to see the island’s top sights at their own pace.
How to Choose the Best Tour in Koh Tao
When deciding on a tour, consider your budget, time available, and interest level. If you’re new to diving, the Open Water Course (see more) or the Try Scuba (see more) are great starters. For underwater explorers, snorkeling tours like the Premium Bays Tour (see more) or 5 Island Tour (see more) offer diverse marine environments. Land lovers will enjoy the Private Road Trip (see more) for its flexibility and scenic views.
Booking early, especially in high season, guarantees spots on popular tours like the Open Water Course and snorkeling trips. Check the weather forecast—most tours run year-round, but some, like the Treasure Hunt, are best in dry seasons.
Final Thoughts
Koh Tao truly offers something for all, whether you want to learn to dive, snorkel with turtles, or simply enjoy breathtaking views from a scooter or boat. For beginners, the Open Water Course and Basic Diver are excellent starting points. For seasoned divers, the Advanced Open Water expands your skills, while snorkelers can opt for the quiet bays tours or the lively Snorkel & Sunset trip.
Whatever your style, booking your preferred tour early will ensure you make the most of your time on this beautiful island. Koh Tao’s underwater world and scenic vistas await—prepare to be amazed.