Advanced Open Water Diver.

Join the SSI Science of Diving specialty and you will develop a complete understanding of the underwater world and its effects on the human body. This specialty is required training for most SSI Professional programs, as well as some Extended Range programs, and is an essential way to expand your dive knowledge. Available online, you can earn your SSI Science of Diving specialty certification from home and get ready to begin your dive professional career. Upon completion, you will be halfway to earning the coveted SSI Divemaster rating and earn the SSI Science of Diving specialty certification.

The Divemaster program is the first step on an exciting journey. Earn the respect of your dive buddies and become an ambassador for diving by taking the Divemaster program. When your interest is to turn your passion into a profession by guiding certified divers, teaching Ecology programs, assisting instructors or even becoming an instructor yourself, your next step Divemaster. We offer both basic and lifestyle packages. Throughout your program you get to enjoy free fun diving as much as you want. If you book lifestyle you even gain free fun diving before and after the program (for life)! Our lifestyle package is made for people who want to turn their diving passion in to a career. No hidden costs and even internships to gain valuable experience in the industry.

The Divemaster program is the first step on an exciting journey. Earn the respect of your dive buddies and become an ambassador for diving by taking the Divemaster program. When your interest is to turn your passion into a profession by guiding certified divers, teaching Ecology programs, assisting instructors or even becoming an instructor yourself, your next step Divemaster. We offer both basic and lifestyle packages. Throughout your program you get to enjoy free fun diving as much as you want. If you book lifestyle you even gain free fun diving before and after the program (for life)! Our lifestyle package is made for people who want to turn their diving passion in to a career. No hidden costs and even internships to gain valuable experience in the industry.

The SSI Decompression Diving Specialty will teach you how to dive beyond the no-decompression limits. You will learn to plan and conduct dives to a maximum depth of 40 meters with limited decompression using your recreational total diving system and a single decompression cylinder. You will learn and practice how to effectively use your dive computer features, including switching gases, gas integration, time-to-reserve, and time-to-surface. Using these computer functions will become second nature, enabling you to safely conduct dives with limited decompression without hours of dive planning. Upon completion, you will earn the SSI Decompression Diving Specialty certification and be able to explore stunning deep dive sites or larger wrecks without being restricted by the traditional no-decompression limits. The opportunities to expand your diving adventures have just got bigger!

Why Develop Self-Reliance? While diving with a buddy is standard, there are times when experienced divers benefit from independence. Developing self-reliance enhances your skills and confidence in all dive scenarios. The Path to Independent Diving With proper training, equipment, and the right mindset, you can responsibly dive without a buddy. The Independent Diving Course teaches the techniques, mental discipline, and risk management required to dive solo or with minimal support. Focus and Confidence Independent diving emphasizes thorough planning, self-sufficiency, and the ability to handle emergencies. Strengthen your skills and dive with complete confidence, whether alone, in pairs, or in a team.

In this sidemount diving course, you’ll learn all you need to go single or two-cylinder recreational sidemount diving up to a maximum depth of 30 meters or to your certification depth, whichever is deeper. Sidemount diving is already common practice for wreck, mine, and cave divers, but now the benefits are being discovered by more recreational divers. With no heavy tank on your back, you’ll be more comfortable in the water and find your streamlining and trim improve effortlessly. By using less energy you may reduce your gas consumption so you can make the most of your dive time. With better buoyancy control, easier access to your valves and more redundancy as well, sidemount diving offers safety and peace of mind. This is the best sidemount diving course to discover and enjoy the enticing advantages of this dive style. You learn all the skills and knowledge you need to safely and comfortably dive with a single or two-cylinder sidemount equipment configuration.

In the SSI Shark Ecology program, you will learn how to interpret shark behaviours, why they are often misunderstood and how dive with sharks. This is a perfect course for shark fans and for divers who are nervous about sharks but want to overcome their fear. Upon completion of this program, you will earn your SSI Shark Ecology Specialty certification and no doubt become an avid shark diver. Start today!

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 research and conservation significance. This course will deepen your understanding of these extraordinary creatures, perfect for marine biology enthusiasts, students, or the curious. Join us and uncover the secrets of nudibranchs.

Dive into the wonders of marine invertebrates with our new SSI ecology specialty — Marine Invertebrate Ecology. This captivating series covers topics like invertebrate evolution and the ecology of simple and complex invertebrates like nematodes, sponges, jellyfish, sea stars, nudibranchs, and squids. You will explore the connections between humans and marine invertebrates and their impact on coral reefs. This program raises environmental awareness, especially within the underwater world. This program will increase your environmental awareness and help you appreciate the marine life you dive with even more! Start online today and earn your SSI Marine Invertebrate Ecology Specialty certification.

Join the SSI Manta and Ray Ecology specialty program and you will learn how to dive with rays and recognize different ray species. You will be taught how rays contribute to healthy ocean ecosystems and why these precious animals need our protection. Upon completion, you will earn your SSI Manta & Ray Ecology Specialty certification.

Dive into the World of Fish What comes to mind when you picture a fish? Vibrant colors, streamlined bodies, or fascinating behaviors? With thousands of species in the ocean, fish come in all shapes and sizes, yet they share key traits that set them apart from other marine life. Found in nearly every body of water, these incredible creatures play a vital role in maintaining ocean ecosystems. This program dives into the biology and behavior of fish, addresses common misconceptions, and examines the impact of human activity on their survival and the health of our oceans.

Discover the Hidden World of Corals Corals may seem like underwater rocks, but they’re actually living creatures that breed, feed, and die, leaving behind the structures that support ocean reef ecosystems. This program offers a deep dive into the fascinating biology of corals, their interactions, common misconceptions, and ongoing conservation efforts. With over 500 species, we’ll explore the vital role corals play in maintaining marine life and the challenges they face.

Your Journey Begins Here This course covers all the essentials of safe scuba diving, from foundational dive theory to mastering key underwater skills. Your training starts in the calm, shallow waters of our swimming pool and transitions to unforgettable dives in Koh Tao’s warm, tropical seas. With guidance from our experienced multilingual instructors, you’ll progress at your own pace, supported every step of the way. By the end of the course, you’ll not only earn your diving certification but also gain new friends and dive buddies to share the adventure with!

Dive Deeper with the Deep Diver Specialty In just two days at Crystal Dive, you can earn your Deep Diver Specialty and become certified to dive to depths of 40 meters. Training is conducted in small groups of up to four divers, where you’ll master techniques for exploring beyond 30 meters and learn to adapt to the unique challenges of deep-water environments. During the course, you’ll practice skills like underwater navigation, assess your reaction to nitrogen narcosis, and independently plan your final dive, preparing you for future deep diving adventures.

Master the Search and Recovery Specialty Whether it’s a small ring or a larger item like an outboard engine, this course teaches you the techniques to recover lost objects underwater. Perfect for those who enjoy new challenges, you’ll gain practical skills that can be applied in any aquatic environment. Learn how to locate and retrieve objects of varying sizes across different terrains and visibility conditions with ease. If you’ve ever lost something in the sea—or know someone who has—this specialty will equip you with the tools to bring it back!