Explore Eastern Gulf

"Meet one of the most fascinating creatures in the ocean—small yet powerful, these nudibranchs inhabit waters around the globe, from the Southern Ocean to the Arctic and everywhere in between." Welcome to the Nudibranch Ecology course, where you’ll explore the world of sea slugs in seven detailed sessions. Begin with their classification and habitats, then learn about their movement, sensory, and respiratory systems. Discover their complex reproductive strategies, relationships with other marine organisms, feeding habits, and crucial role in ecosystems. Explore their defense mechanisms and interactions with humans, emphasizing their importance in research and conservation. This course will deepen your understanding of these extraordinary creatures—perfect for marine biology enthusiasts, students, or anyone with a curious mind. Join us and uncover the secrets of nudibranchs.

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

The scuba diving trial course is suitable for those with no prior diving experience and limited time, yet still looking to gain knowledge and have fun.

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

SSI Open Water Diver – 3 Days in Koh KoodBecome a certified scuba diver in just 3 days with Koh Kood Divers. The SSI Open Water Diver course is designed for beginners and gives you the knowledge, skills and confidence to dive independently with a buddy anywhere in the world.Your course combines online SSI theory, confined-water training and 4 open-water dives in the warm tropical waters around Koh Kood. We keep our groups small, with a maximum of 4 students per instructor, so you receive plenty of personal attention and time to become comfortable underwater.3-Day Program: Day 1: Confined-water training – learn and practice the essential scuba skills in shallow, protected water. Day 2: Open Water Dives 1 & 2 – put your new skills into practice and start exploring underwater. Day 3: Open Water Dives 3 & 4 – develop your buoyancy, confidence and diving skills while enjoying real dive sites.The course includes SSI digital learning materials, professional SSI instructor, full scuba equipment, 4 open-water training dives, boat trips, hotel pickup, lunch, snacks and drinks on the boat.After successfully completing the course, you'll receive your internationally recognized SSI Open Water Diver certification, allowing you to dive to a maximum depth of 18 metres with a buddy.Duration: 3 days Experience required: None – complete beginners welcome Minimum age: 10 years Maximum depth: 18 metres for adults (age restrictions apply to Junior Open Water Divers) Group size: Maximum 4 students per instructor Location: Koh Kood, ThailandLearn to dive. Build real confidence underwater. Discover a whole new world.

Weekly Liveaboard Trip departing from Rayong every weekend from October to April

Welcome to underwater world. let's start and booking your course today.

This globally recognized certification program is the best way to begin your lifelong adventures as a certified scuba diver. Personalized training is combined with in-water practice sessions to ensure you have the skills and experience required to become truly comfortable underwater. You will earn the SSI Open Water Diver certification.

The Dive Guide program is the first step on an exciting journey. Learn to safely lead certified divers in various environments and conditions. By giving dive briefings, doing site evaluations, and leading dives, you will become a confident Dive Guide in no time. Begin your diving career working as a Professional Dive Guide or continue the qualifications for Divemaster.

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Open Water Diver program! With this program, you can try a variety of specialties before committing to full specialty programs. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Open Water Diver Program, you will try out 5 different specialties. You will complete one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. With this trial program in specialty diving, you will have total freedom to explore. You can complete the full specialty programs any time in the future and credit your Advanced Open Water Diver training towards them.

The SSI Diver Stress and Rescue specialty program teaches you the skills you need to protect yourself and other divers. You will learn how to identify stress, how to prevent accidents and be taught practical techniques to conduct rescues and provide emergency care. With a combination of pool and open water practice sessions, you will become well prepared and confident at handling emergency and rescue situations. Upon completion, you will earn the SSI Diver Stress and Rescue Specialty certification.

Weekly Liveaboard Trip departing from Rayong every weekend from October to April

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Open Water Diver program! You will try Deep Diving and Navigation plus a variety of 3 more specialty areas of choice before committing to full specialty training. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Open Water Diver Program, you will experience 5 different specialties by completing one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. By taking this program you will have total freedom to explore. You can complete the full Specialty trainings any time in the future and credit your Advanced Open Water Diver training towards them.

If you cannot decide which specialty programs are the best choice for you, join the SSI Advanced Open Water Diver program! With this program, you can try a variety of specialties before committing to full specialty programs. It is a great way to experience what advanced diver training is all about and how valuable it can be to your diving adventures. During the Advanced Open Water Diver Program, you will try out 5 different specialties. You will complete one open water training dive per specialty after a comprehensive briefing with your SSI Instructor. With this trial program in specialty diving, you will have total freedom to explore. You can complete the full specialty programs any time in the future and credit your Advanced Open Water Diver training towards them.

SSI Advanced Open Water Diver – 2 Days in Koh KoodTake your diving to the next level with the SSI Advanced Open Water Diver course at Koh Kood Divers. Designed for certified Open Water Divers, this course helps you improve your skills, gain confidence and experience new types of diving while exploring the tropical waters around Koh Kood.During the course, you'll complete 5 training dives with an experienced SSI instructor. You'll develop your buoyancy, underwater navigation, awareness and overall diving ability, while gaining experience at greater depths.2-Day Program: Day 1: Three training dives focused on improving your diving skills, control and confidence underwater. Day 2: Two additional training dives, including deeper diving and further skill development.We keep our groups small, with a maximum of 4 students per instructor, giving you plenty of personal attention and time to improve.The course includes SSI digital learning materials, professional SSI instructor, full scuba equipment, 5 training dives, boat trips, hotel pickup, lunch, snacks and drinks on the boat.After successfully completing the course, you'll receive your internationally recognized SSI Advanced Open Water Diver certification, allowing you to enjoy a wider range of dive sites and diving experiences.Duration: 2 days Experience required: Open Water Diver certification or equivalent Training dives: 5 dives Group size: Maximum 4 students per instructor Location: Koh Kood, ThailandImprove your skills. Go deeper. Build confidence. Become a better diver.

The SSI Advanced Open Water Diver (AOWD) course from SSI (Scuba Schools International) is the next level of scuba diving beyond the Open Water Diver course. It is designed to help divers develop their skills, build confidence, and broaden their diving experiences in a variety of ways.The key points of the course are as follows:1. Main ObjectivesDevelop Skills and Safety: Practice buoyancy control techniques, underwater navigation, and handling various situations.Extend diving limits: Allow diving to a maximum depth of 30 meters (for individuals aged 15 and older; for youth aged 10–14, depth limits will be based on age criteria)2. Course StructureSSI’s AOWD course emphasizes experience-based learning and is divided into two main parts:Theory (Digital Learning): Study through the SSI app or website, which offers flexible, self-paced learning.Practical Dives (Open Water Dives): A total of 5 practical dives (Specialty Dives) must be completed, including the following required courses: 1. Deep Diving: A required course to learn how to handle pressure conditions and faster air consumption as you descend deeper. 2. Navigation (Underwater Navigation): A required course to practice using a compass and observing the underwater environment to stay on course. There are also 3 elective dives: You may choose topics of interest based on the suitability of the location and the instructor, such as: Night & Limited Visibility Diving (Night Diving)Wreck Diving (Wreck Diving) Peak Perfect Buoyancy (Advanced Buoyancy Control – Highly Recommended) Enriched Air Nitrox (Nitrox Diving) Waves, Tides & Currents (Diving in Currents and Waves)3. PrerequisitesMust hold an SSI Open Water Diver certification (or equivalent from another organization, such as CMAS, RAID, or PADI)Be physically and mentally fit for diving (no pre-existing medical conditions that would prevent diving)Ages 10 and up (children ages 10–14 will receive a Junior Advanced Open Water Diver card)If you’d like more details on any aspect—such as course locations, duration, or costs—feel free to ask!

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

The Instructor Evaluation (IE) is the final step of SSI’s 2-Step Instructor Training Approach Divemasters or equivalent-level professionals will have to successfully complete the Instructor Training Course (ITC) first where you’ll learn how to: • Conduct academic sessions • Lead confined water training • Teach Open Water Diver and various Specialty programs like Enriched Air Nitrox, Diver Stress&Rescue, Perfect Buoyancy and more • Develop student management and communication skills Already an experienced instructor with another agency? You may be eligible for shortened oboarding options where you will only have to complete certain parts of the Instructor Training Course (ITC) followed by passing an Instructor Evaluation (IE). Contact an SSI Training Center near you to learn more. Already certified as an Assistant Instructor with another agency? You could continue your professional journey with SSI. Get in touch with a local SSI Training Center to explore your options.

Losin is a little rock with a Lighthouse standing lonely 72 kilometers away from the Gulf of Thailand. Under the sea, there is a 20-kilometer square beautiful coral reef. Good for hard coral landscape pictures with Swarm of Fishes. AUG 3-5 with MV Aquarian (11 DIVES) AUG 12 - 14 with MV Venus Marina (11 DIVES) ** Not included ** - Transportation cost - Equipment rental fee Price per day (BCD+REG 400.- / Full set 500.- /Divecom 300.- / Torch 100.-) - National Park Entrance fee - Diving Insurance - Alcohol drink - Tip for Boat Crew and Divelead

Fun Diving in Rayong : A day or Two days trip. Within 3 Hours driving from Bangkok

The 37m Thailand Master is a purpose-built sailing liveaboard designed by divers, for divers. Accommodating up to 18 guests in 7 air-conditioned cabins, it offers comfortable en-suite bathrooms with hot water, fresh towels, and storage space. Laid out to maximize comfort and functionality, Thailand Master provides the perfect balance between relaxation and serious diving adventure.Guests can unwind on the sundeck lounges or enjoy meals in the indoor and outdoor dining areas, where meals are served buffet-style with vegetarian and other dietary options available. Between dives, relax with a book from the onboard library—ideal for identifying marine life spotted underwater—or enjoy movies and games in a welcoming social atmosphere designed for like-minded divers.The shaded dive deck offers personal setup areas, dedicated storage, and nitrox refills. Rental equipment is available, and a diving tender ensures easy access to sites. Itineraries explore Thailand’s top dive destinations, including Koh Bon, Koh Tachai, Richelieu Rock, Koh Phi Phi, King Cruiser, Hin Muang, and Hin Daeng. From December to April, the Thailand Master also ventures into Myanmar’s spectacular Mergui Archipelago, visiting renowned sites such as Black Rock, High Rock, Tower Rock, and Torres Island.Best marine life in ThailandThailand is renowned for warm tropical waters and vibrant coral reefs playing host to a wide variety of marine life.The country’s most famous visitors are Manta Rays & Whalesharks, which can be seen on both coasts if you are lucky. The dive spots most renowned for sightings are Richeleu Rock - just north of the Similan islands, Hin Daeng & Hin Muang in the Southern Andaman & Chumpon Pinnacle in the Gulf.Leopard Sharks are another sought after encounter, found most commonly on the dive sites around Koh Phi Phi and Phuket. These elegant, bottom dwelling sharks are at their graceful best if you are fortunate enough to see them swimming.Turtles are found on both coasts of Thailand, although more regularly on the Andaman coast. Green and Hawksbill Turtles are the most common species seen.Thailand’s dive sites also play host to a wide variety of smaller marine life, including some very special finds. Octopus and Cuttlefish are regularly seen, while Seahorses, Ghost Pipefish and Harlequin Shrimps are delights for the eagle-eyed diver. Scorpionfish, Lionfish, Glassfish and Snapper are just a few of the other fish you might encounter while diving in Thailand.When is the best time to dive in Thailand?Thailand’s east and west coasts ensure that there are good diving possibilities throughout the year. When the seasonal monsoons affect one coast, the other normally has good diving conditions.On Thailand’s Andaman coast the best diving season is from November through to late April or early May. The wind direction during these months brings calm sea conditions and also the best weather. As the high season on the Andaman coast develops, humidity tends to increase ,but diving conditions remain excellent and sea temperatures are also at their warmest, sometimes in excess of 85 degrees Fahrenheit.Trip Requirements :To ensure everyone enjoys the diving safely, participants must have:Minimum 25 logged divesAdvanced Open Water Diver certificationNitrox (Enriched Air) certificationCome experience Thailand's incredible underwater world with High Sierra Divers and create memories that will last a lifetime!

Weekly Liveaboard Trip departing from Rayong every weekend from October to April

We have daily trips throughout high season and our weekly schedule is Mon/Wed/Fri/Sun trip around Koh Kood, cost is 1000 THB per snorkeler & Tue/Thu/Sat Trip to Koh Rang Marine Park, cost is 1400 THB per snorkeler (incl 200 THB Marine Park Entry fee). Children under 9 are half price. Our boat departs from Bang Bao bay at 9am daily and for the Koh Kood trip should arrive back around 3pm and for Koh Rang trip we should arrive back around 5pm. The above prices include: • Snorkelling equipment • Snorkelling guide • Resort pickup & drop-off • Lunch, snacks and refreshments • Visits to different dive sites daily(Whatsapp/Line) Email: bookings@kohkooddivers.com www.kohkooddivers.com

A trash-collecting trip to do good deeds during a special holiday