Your passport to the underwater world The Open Water Diver course is the most popular scuba diving course in the world. It teaches you all the theoretical and practical basics you need to dive safely with a buddy (diving partner) anywhere on the planet.At Apo Dhatu Divers, we prioritize your comfort, confidence, and safety.Maximum of 2 students per instructor: Highly personalized instruction at your own pace, stress-free.Flexible Online Theory (MySSI): Complete your theory courses at home before you leave or at your leisure from your hotel.100% French and English-speaking instruction: Clear explanations and a stress-free learning experience.Open-water dives from our boat: No beach departures—you’ll dive directly onto the magnificent reefs in one of the marine national parks near Koh Lanta.

### Discover the **SSI Underwater Navigation Specialty** and become a master of navigation!

Explore the Coral Gardens Discover the SSI Coral Identification Specialty** and discover the secrets of the ocean's architects!

React Right is SSI’s emergency first response course and provides you with the training and knowledge you need to act as a first responder in a medical emergency. In this flexible dive program, you can choose which subjects you want to learn about, including primary assessment, first aid, CPR and primary stabilization techniques. You can also learn about oxygen administration in diving emergencies and Automated External Defibrillator (AED) basics. Using a combination of academic sessions and practical training scenarios, this program will give you the tools and confidence you need for emergency response. By the time you are certified, you will be able to act as an emergency first responder, provide first aid and CPR, administer oxygen and provide AED support in a medical emergency. Earn your SSI React Right specialty certification. Get started today!

Minimum number of participants: 2

Demystify the lords of the ocean, understand their vital role in the marine ecosystem, and learn how to observe them safely during your dives.Why Take the Shark Ecology Specialty?Change Your Perspective on One of the Planet's Most Fascinating and Threatened PredatorsSharks often suffer from an unfair reputation. Yet, they are vital players in the balance and health of our oceans. The SSI Shark Ecology Specialty dives deep into the captivating world of these great apex predators, helping you understand their anatomy, evolution, and behaviors.By mastering shark biology and eco-friendly interaction rules, you'll experience your upcoming dives with an informed, passionate perspective.Biology & Sensory Receptors Discover their highly evolved senses (Ampullae of Lorenzini, lateral line, and unmatched sense of smell).Species Identification Learn to recognize Thailand's iconic species (whale sharks, leopard sharks, and blacktip reef sharks).Behavior & Interactions Decode shark body language and adopt best practices for respectful underwater observation.Ecological Role & Conservation Understand the critical impact of their decline and discover how to advocate for their global protection.PrerequisitesMinimum Age 10 years old.Requirements No prior diving experience required (open to non-divers, freedivers, and snorkelers as well).

Demystify the lords of the oceans, understand their vital role in the marine ecosystem, and learn how to observe them safely during your dives.Why take the Shark Ecology specialty course?Change the way you look at one of the most fascinating and endangered predators on the planet: Sharks often suffer from an unfair reputation. Yet they play an essential role in the balance and health of our oceans. The SSI Shark Ecology Specialty immerses you in the captivating world of these magnificent creatures to help you understand their anatomy, evolution, and behavior. By mastering shark biology and the rules of eco-responsible interaction, you’ll experience your next dives with a knowledgeable and passionate perspective.Biology & Sensory Receptors: Discover their highly developed senses (Lorenzini ampullae, lateral line, exceptional sense of smell).Species Identification: Learn to recognize Thailand’s iconic species (whale shark, leopard shark, blacktip reef shark).Behavior & Interactions: Decoding shark body language and adopting best practices for underwater observation.Ecological Role & Conservation: Understand the impact of their disappearance and commit to their global protection.PrerequisitesMinimum age: 10 years old.Prerequisites: No diving experience required (also accessible to non-divers, freedivers, and snorkelers).

Demystify the lords of the oceans, understand their vital role in the marine ecosystem, and learn how to observe them safely during your dives.Why take the Shark Ecology specialty course?Change the way you look at one of the most fascinating and endangered predators on the planet: Sharks often suffer from an unfair reputation. Yet they play an essential role in the balance and health of our oceans. The SSI Shark Ecology specialty immerses you in the captivating world of these magnificent sharks to help you understand their anatomy, evolution, and behavior. By mastering shark biology and the rules for eco-responsible interaction, you’ll experience your next dives with a knowledgeable and passionate perspective.Biology & Sensory Receptors: Discover their highly developed senses (Lorenzini’s ampullae, lateral line, and exceptional sense of smell).Species Identification: Learn to recognize Thailand’s iconic species (whale shark, leopard shark, blacktip reef shark).Behavior & Interactions: Decoding shark body language and adopting best practices for underwater observation.Ecological Role & Conservation: Understand the impact of their disappearance and commit to their global protection.PrerequisitesMinimum age: 10 years old.Prerequisites: No diving experience required (also accessible to non-divers, freedivers, and snorkelers).

The Training Program (1 Day, 2 dives)The training combines interactive theory study on the MySSI app with a themed presentation at the center with your instructor with the practical application during your open-water dives:Introduction to Marine Phyla: Anatomy, Locomotion, and Feeding Systems of Invertebrates.Focus on Cephalopods: The Remarkable Intelligence of Octopuses, Cuttlefish, and Squid in the Andaman Sea.Macro-fauna of Koh Lanta: A closer look at the iconic species found at local dive sites (harlequin shrimp, porcelain crabs, stomatopods/mantis shrimp).Conservation & Ecological Role: The impact of the reef and water quality on invertebrate populations.PrerequisitesMinimum age: 10 years old.Prerequisites: Must hold a Scuba Diver certification or an equivalent recognized credential.

The Training Program (1 Day, 2 Snorkeling Sites)The training combines interactive theory study on the MySSI app with a themed presentation at the center with your instructor with the practical application during your 2 open-water dives:Introduction to Marine Phyla: Anatomy, Locomotion, and Feeding Systems of Invertebrates.Focus on Cephalopods: The Remarkable Intelligence of Octopuses, Cuttlefish, and Squid in the Andaman Sea.Macro-fauna of Koh Lanta: A closer look at the iconic species found at local dive sites (harlequin shrimp, porcelain crabs, stomatopods/mantis shrimp).Conservation & Ecological Role: The impact of the reef and water quality on invertebrate populations.PrerequisitesMinimum age: 6 years old.Min. Prerequisites: No diving experience required (also accessible to non-divers, freedivers, and snorkelers).

The Training Program (1 Day, 2 Dives)The training combines interactive theory study on the MySSI app with a themed presentation at the center with your instructor with the practical application during your 2 open-water dives:Introduction to Marine Phyla: Anatomy, Locomotion, and Feeding Systems of Invertebrates.Focus on Cephalopods: The Remarkable Intelligence of Octopuses, Cuttlefish, and Squid in the Andaman Sea.Macro-fauna of Koh Lanta: A closer look at the iconic species found at local dive sites (harlequin shrimp, porcelain crabs, stomatopods/mantis shrimp).Conservation & Ecological Role: The impact of the reef and water quality on invertebrate populations.PrerequisitesMinimum age: 10 years old.Min. Prerequisites: Must hold a Scuba Diver certification or an equivalent recognized credential.

The Training Program (1 Day, 2 Snorkeling Sites)The training combines interactive theory via the MySSI app with a themed presentation at the center with your instructor, followed by hands-on practice during your two snorkeling dives in the ocean.Topics Covered:Introduction to Marine Phyla: Anatomy, Locomotion, and Feeding Systems of Invertebrates.Focus on Cephalopods: The Remarkable Intelligence of Octopuses, Cuttlefish, and Squid in the Andaman Sea.Macro-fauna of Koh Lanta: A closer look at the iconic species found at local dive sites (harlequin shrimp, porcelain crabs, stomatopods/mantis shrimp).Conservation & Ecological Role: The impact of the reef and water quality on invertebrate populations.PrerequisitesMinimum age: 6 years old.Prerequisites: No diving experience required (also accessible to non-divers, freedivers, and snorkelers).

Push your limits, explore depths of up to 30 meters, and discover five new aspects of scuba diving in complete safety.Gain confidence, feel more at ease, and discover new sensations.Are you Open Water certified (or equivalent) and looking to take your diving to the next level? The SSI Advanced Open Water Diver program is the ideal next step to refine your technique without getting bogged down in lengthy theory classes.This course is hands-on: you’ll complete 5 themed adventure dives to try out different specialties and expand your diving capabilities to a depth of 30 meters.Access to the most beautiful sites: The 30m certification opens the doors to iconic deep sites such as Hin Daeng & Hin Muang or the caves of Koh Haa.Maximum of 2 students per instructor: Personalized attention and tailored advice to help you perfect your buoyancy.100% Hands-On: No lengthy written exams—just briefings and fun in the water.Counts toward your future specialties: Each dive you complete counts as the first dive of the corresponding SSI Specialty course!100% French- and English-speaking instruction: Clear explanations and a stress-free learning experience.

The Perfect Buoyancy SSI specialty is the best way to improve your buoyancy and get the most out of every dive. Buoyancy is an essential diving skill, but any diver will tell you that it takes time to perfect. The Perfect Buoyancy Specialty will teach you advanced buoyancy skills and techniques, so you can master your buoyancy faster and enjoy more relaxed diving adventures. In this fascinating program, you'll also learn new skills that protect the environment and work in all diving situations. Upon completion of this course, you'll earn the Perfect Buoyancy SSI specialty certification. With improved buoyancy skills, you'll soon be able to glide with ease and take the underwater photos you've been dreaming of!

The SSI Deep Diving Specialty will teach you everything you need to dive to depths between 18 and 40 meters, through a mix of theory sessions and open water dives. You'll learn how to safely plan and execute your deep diving adventures, and how to use computers and gas calculations to get the most out of your deep dives. At the end of this course, you'll receive your Deep Diving SSI Specialty certification and be able to explore magnificent deep dive sites wherever you like. This SSI Specialty is also a prerequisite for certain additional training courses, making it the next logical step in your diver training.

As a Nitrox diver, you can increase your bottom times and safety margins, plus shorten your surface intervals - so you can spend more time diving and less time waiting! In this program, you will learn new skills and increase your diving knowledge whilst learning how to safely plan and dive with enriched air mixtures of up to 40% oxygen. Upon completion, you will earn an SSI Enriched Air Nitrox 32% or 40% certification.

Push your limits, explore depths of up to 30 meters, and discover 5 new aspects of scuba diving in complete safety.Are you Open Water certified (or equivalent) and looking to take your diving to the next level? The SSI Advanced Open Water Diver program is the ideal next step to refine your technique without getting bogged down in lengthy theory classes.This course is hands-on: you’ll complete 5 themed adventure dives to try out different specialties and expand your diving capabilities to a depth of 30 meters.Access to the most beautiful sites: The 30m certification opens the doors to iconic deep sites such as Hin Daeng & Hin Muang or the caves of Koh Haa.Maximum of 2 students per instructor: Personalized attention and tailored advice to help you perfect your buoyancy.100% Hands-On: No lengthy written exams—just briefings and fun in the water.Counts toward your future specialties: Each dive completed counts as the first dive of the corresponding SSI Specialty course 100% French-speaking instruction: Clear explanations and a stress-free learning experience.

Exceptional Dives on Thailand’s Most Stunning ReefsWhether you’re a newly certified diver or a seasoned underwater explorer, Koh Lanta offers quick access to world-renowned dive sites.At Apo Dhatu Divers, we run full-day trips on fully-equipped, comfortable boats to help you discover the wonders of the Mu Koh Lanta and Koh Phi Phi marine national parks. Enjoy seamless logistics and personalized guiding for completely stress-free diving.Must-Dive Sites Departing from Koh LantaHin Daeng & Hin Muang (Red Rock & Purple Rock) World-class deep pinnacle dives famous for dramatic drop-offs, vibrant soft corals, and frequent encounters with pelagics like manta rays and whale sharks.Koh Haa (The Five Islands) Crystal-clear waters featuring stunning light-filled caverns (The Cathedral), dramatic swim-throughs, and gentle lagoons perfect for both divers and snorkelers.Koh Bida (Bida Nai & Bida Nok) Located near Koh Phi Phi, these iconic limestone islands are teeming with colorful reef life, sea turtles, sea snakes, and blacktip reef sharks.Koh Phi Phi (Palong & Malong) Sheltered reef sites renowned for consistent turtle sightings, harmless reef sharks, and lush underwater scenery.Why Choose Apo Dhatu DiversSafety & Small Groups Maximum of 4 divers per guide to ensure your freedom, enhance safety, and protect the fragile marine environment.French-Speaking Guides Detailed briefings in your native language and attentive, caring support underwater.All-Inclusive Comfort Round-trip hotel transfer included (a small surcharge may apply for remote locations).Fully Catered on Board Breakfast, a hot cooked lunch (dietary options available), delicious snacks, refreshing drinks, and fresh tropical fruit.Complete Gear Included Top-tier, regularly serviced dive equipment provided for maximum safety.Dive Computer Provided Personal dive computer included for optimal profile tracking and safety.Insurance Included Complimentary coverage for the entire duration of your activity.Share the Same Ocean Day at Your Own Pace! Traveling together with different interests? No problem at all! You can both join the exact same boat trip. While one explores the depths on a dive, the other can snorkel the reef or relax on deck as a passenger. You can even swap roles during the day with our switcher option!

Exceptional Dives on Thailand’s Most Stunning ReefsWhether you’re a newly certified diver or a seasoned underwater explorer, Koh Lanta offers quick access to world-renowned dive sites.At Apo Dhatu Divers, we run full-day trips on fully equipped, comfortable boats to help you discover the wonders of the Mu Koh Lanta and Koh Phi Phi marine national parks. Enjoy seamless logistics and personalized guiding for completely stress-free diving.Hin Daeng & Hin MuangThailand’s legendary drop-offs, bursting with vibrant soft corals and famous for unforgettable encounters with manta rays and whale sharks.Why Choose Apo Dhatu DiversSafety & Small Groups Maximum of 4 divers per guide to ensure your freedom, enhance safety, and protect the fragile marine environment.English-Speaking Guides Detailed briefings in your native language and attentive, caring support underwater.All-Inclusive Comfort Round-trip hotel transfer included (a small surcharge may apply for remote locations).Fully Catered on Board Breakfast, a hot cooked lunch (dietary options available), delicious snacks, refreshing drinks, and fresh tropical fruit.Complete Gear Included Top-tier, regularly serviced dive equipment provided for maximum safety.Dive Computer Provided Personal dive computer included for optimal profile tracking and safety.Insurance Included Complimentary coverage for the entire duration of your activity.