Koh Tao SCUBA Diving Courses for Every Adventure

Koh Tao SCUBA diving courses are a popular island activity for adventurous and fun-seeking tourists. Get started with your Open Water course on Koh Tao and get SCUBA certified in paradise, or take your skills even further with our advanced diving courses. With expert instructors, world-class facilities, and the stunning reefs of Koh Tao, your diving journey starts here.

Beginner SCUBA Diving Courses on Koh Tao

Ready to dive in for the first time? Crystal Dive Koh Tao’s SCUBA diving courses are designed to make your first underwater experience safe, exciting, and unforgettable. From trying out SCUBA for a day to getting SCUBA certified with our Open Water course, we’ll guide you every step of the way through your underwater journey.

Koh Tao SCUBA diving courses basic diver underwater

Basic Diver Experience

Curious about diving but not ready to commit to full certification? The Basic Diver Experience lets you discover the magic of SCUBA diving on Koh Tao in just one day — a perfect introduction before enrolling in a full Open Water course.

Divers during Open Water course on Koh tao

OPEN WATER COURSE

The Open Water course is the world’s most popular beginner SCUBA certification. Over three exciting days, you’ll learn the essential skills to dive safely and confidently — and get SCUBA certified to dive to 18m anywhere in the world.

Koh Tao SCUBA diving courses smiling on the boat

SCUBA DIVER COURSE

The SCUBA Diver Course offers a fast-track way to start your underwater adventure. You’ll earn a limited certification to dive under professional supervision — a perfect stepping stone toward completing your Open Water course later on.

ADVANCED DIVING COURSES

Take your diving skills to the next level with Crystal Dive Koh Tao’s SCUBA diving courses. Whether you’re looking to explore deeper dives, handle emergencies with confidence, or deepen your theoretical knowledge, our advanced diving courses on Koh Tao are designed to make you a safer, more capable diver.

Advanced diving courses on Koh tao seeing turtle underwater

Advanced Adventurer

Ready to expand your diving experience? The Advanced Adventurer diving course lets you complete five specialty dives — like deep diving, wreck diving, night diving, and underwater navigation — giving you a taste of advanced diving skills in just two days.

Stress and Rescue Course diver performing rescue breaths on unconscious diver on Koh Tao

React Right & Rescue

Take your skills beyond basic training with our React Right & Rescue course. This advanced diving course teaches essential emergency response and rescue techniques, helping you become a confident, safety-conscious dive buddy in all underwater conditions.

Advanced Adventurer Course divers underwater at white rock dive site Koh Tao

Science of Diving

Deepen your diving knowledge through the Science of Diving course, a key part of our advanced SCUBA diving courses on Koh Tao. Learn about diving physics, physiology, and equipment systems — critical knowledge for divers advancing toward pro-level expertise.

SCUBA Specialty Courses on Koh Tao

Expand your diving skills with Crystal Dive Koh Tao’s SCUBA specialty courses. Whether you want to master underwater navigation, improve buoyancy control, or explore new environments like night dives and wrecks, diving specialties on Koh Tao are designed to help you dive deeper, safer, and with more confidence.

Night and Limited Visibility SCUBA specialty courses divers in the water at twilight

Night And Limited Visibility

The Night and Limited Visibility course equips you with the skills and confidence to safely explore underwater environments after dark or in low-visibility conditions. One of our most exciting diving specialties, this course challenges you to see the ocean in a whole new light.

Navigation Specialty Divers practicing compass skills on land on Mae Haad beach Koh Tao

Underwater Navigation Specialty

Learn to find your way underwater with our Navigation Specialty, part of our SCUBA specialty courses. Master compass use, natural navigation techniques, and underwater orientation skills — essential tools for safer, more confident dives.

SCUBA specialty courses Perfect Buoyancy diver swimming through hoop underwater

Perfect Buoyancy Specialty

Fine-tune your underwater movement with the Perfect Buoyancy Specialty. This popular diving specialty on Koh Tao teaches you to control your buoyancy precisely, conserve air, protect the reef, and enjoy longer, more comfortable dives.

Diver Propulsion Vehicle DPV Specialty course diver scootering around the waters of Koh Tao

Diver Propulsion Vehicle Specialty

This SCUBA specialty course isn’t found everywhere on Koh Tao – but we have it. The DPV course will teach you how to safely operate underwater scooters so you can cover more ground while conserving energy.

Search and Recovery specialty course diver releasing delayed surface marker buoy (DSMB)

Search and Recovery Specialty

Sharpen your problem-solving skills with the Search and Recovery Specialty course. One of our most practical diving specialties, this course teaches effective techniques for locating and retrieving lost objects underwater.

Sidemount Specialty divers preparing equipment on the Crystal Dive boat

Sidemount Specialty Diver

Discover a new way to dive with the Sidemount Specialty Diver course. Learn how to configure and dive with sidemount equipment, improving flexibility and comfort — a unique skillset offered through this popular SCUBA specialty course.

Advanced Specialty Courses on Koh Tao

Expand your diving experience with Crystal Dive’s advanced specialty courses on Koh Tao. Whether you’re planning deeper dives, learning technical skills like decompression and nitrox use, exploring wrecks, or capturing the underwater world through photo and video, these SCUBA specialty courses help you dive smarter, safer, and with greater confidence.

Deep Dive Specialty course safety cylinder (drop tank) seen from underwater

DEEP DIVING SPECIALTY

Expand your diving limits with the Deep Diving Specialty course. Part of our advanced specialty courses, this course prepares you to safely explore greater depths and unlock access to new dive sites and experiences.

Advanced Wreck Diver Specialty course divers practicing line laying outside the HTMS Sattakut Wreck

Wreck Diver Specialty

Discover hidden history beneath the waves with the Wreck Diver Specialty. This course teaches you the skills and safety techniques needed to explore underwater wrecks confidently, and is quite popular among our advanced specialty course offerings.

Enriched Air Nitrox Specialty Divers having fun with cylinder bands

Enriched Air Nitrox

Dive longer and recover faster with the Enriched Air Nitrox Specialty. Learn how to safely plan and execute dives using enriched air blends — a critical skill for divers progressing through their SCUBA specialty courses

Diver on the surface at White Rock Dive Site near Koh Tao

Decompression Diving

Go beyond no-decompression limits with the Decompression Diving Specialty. This course introduces you to planning staged decompression dives, preparing you for more technical and adventurous diving challenges.

Independent Specialty divers planning dive on the Crystal Dive boat

Independent Diver Specialty

Build true self-reliance underwater with the Independent Diver Specialty. Learn how to plan and conduct dives without a buddy — a valuable skill for divers aiming to master more advanced specialty diving techniques.

Diver taking video during underwater videographer course on Koh Tao

Photo & Video Course

Capture the magic of the underwater world with the Photo and Video Specialty. Learn how to create stunning images and videos while maintaining excellent buoyancy — a perfect creative addition to your advanced specialty diving skills.

Marine Life and Ecology Specialty Courses

The ocean is an incredible ecosystem and Crystal Dive’s marine ecology courses and marine life specialties will teach you all about this new world. Learn about coral reefs, sharks, turtles, nudibranchs, rays, and the complex biodiversity that makes Koh Tao’s underwater world so extraordinary. These courses are perfect for divers who want to enhance their knowledge, appreciation, and conservation efforts beneath the surface.

Diver taking a video during underwater videographer course

Marine Ecology

Gain a deeper understanding of underwater ecosystems with our Marine Ecology course. This marine ecology course introduces you to the relationships between marine species, habitats, and the critical importance of ocean conservation.

Nudibranch seen during nudibranch ecology specialty

Nudibranch Ecology

Discover the colourful and fascinating world of nudibranchs (sea slugs) with this colourful marine life specialty. Learn to identify different species (there are over 3,000) and understand their unique roles within the marine environment.

Blacktip reef shark seen during Shark Ecology Course on Aow Leuk dive site Koh Tao

Shark Ecology

Explore the behaviour, biology, and conservation needs of sharks with our Shark Ecology course. This toothy marine life specialty helps foster respect and understanding for these critical ocean predators.

Turtle seen in the waters around Koh Tao during ecology specialty dive

Sea Turtle Ecology

Dive into the lives of sea turtles, learning about the different species, behaviours, and conservation challenges. Our Sea Turtle Ecology course is a truly memorable marine life specialty focused on protecting these incredible creatures.

Marine conservation divers checking the health of transplanted coral at Junkyard Reef Koh Tao

Coral Identification

Learn to recognise and appreciate coral species with the Coral Identification course. This marine ecology course builds essential knowledge for understanding reef ecosystems and supporting conservation efforts.

Jenkins Whipray in the sand underwater on Koh Tao

Manta & Ray Ecology

Understand the biology and behaviour of rays and mantas with this inspiring marine life specialty. Explore their role in ocean ecosystems and learn why protecting them is critical to marine biodiversity.

Titan Triggerfish with remora fish attached seen during Fish Identification Specialty course

Fish Identification

Enhance your dive experiences by learning how to identify a wide range of fish species. The Fish Identification course is a fun and rewarding specialty course that will deepen your underwater experience.

Crab seen during Night & Limited visibility specialty dive on Koh Tao

Marine Invertebrate Ecology

Explore the fascinating world of marine invertebrates with this marine ecology course. Discover how these small but essential creatures contribute to healthy, thriving underwater ecosystems.

Professional SCUBA Diving Courses and Instructor Training

Take your passion for diving to the next level with Crystal Dive’s professional SCUBA diving courses and instructor training programs. Whether you’re aiming to become a Divemaster, certified dive instructor, or specialized marine conservation professional, our world-class professional SCUBA diving training prepares you for a rewarding career beneath the surface.

Koh Nang Yuan and Koh Tao with dive boats seen from above

Divemaster Course

Step into the professional world of diving with the Divemaster Course. Develop leadership skills, expand your dive knowledge, and learn to guide and mentor others — the essential first step in your journey into professional SCUBA diving courses.

Instructor Training Course candidate performing skill in the pool

Instructor Course

Train to teach others and share your passion for the underwater world with our Instructor Training Course (ITC). This comprehensive dive instructor training program prepares you for a rewarding career inspiring new divers around the globe.

Crystal Dive Divemaster Instructors on boat

DMI Program

Advance your diving career with the Divemaster Instructor (DMI) Program. Learn to be an exceptional leader and broaden your impact within the diving community by learning to teach professional SCUBA specialty courses.

Assistant Instructor Trainer Course candidates learning in the Crystal Dive pool

Assistant Instructor Trainer Course

Take your instructor skills to the next level with the Assistant Instructor Trainer (AIT) Course. Join the Instructor Development Team and gain the ability to certify Assistant Instructors — a valuable credential for leadership roles in the dive industry.

Diver taking video during underwater videographer course

Professional Underwater Videographer Courses

Master underwater film production with real-world, hands-on training. Our Professional Underwater Videographer Course teaches camera operation, filming techniques, and storytelling, opening doors to creative careers in underwater media.

The Coral Tribe marine conservation divers on the Crystal Dive boat near Koh Tao

Marine Conservation Courses and Internships

Combine your passion for diving and ocean protection with a Marine Conservation Internship at The Coral Tribe. Get hands-on experience in reef restoration, marine ecology, and sustainable practices — making a real difference while building your professional diving career.

Save on Beachfront Accommodation When You Dive With Crystal

Book your SCUBA diving course with Crystal Dive Koh Tao and enjoy exclusive discounts on beachfront accommodation. Whether you’re here to get SCUBA certified or advance your diving skills, we make your stay as amazing as your dives.