The SSI Science of Diving Specialty course provides you with a comprehensive understanding of the underwater world and its effects on the human body. The course is the foundation for most SSI Professional courses as well as some Extended Range courses and is an essential part of deepening your diving knowledge. You can complete your SSI Science of Diving Specialty certification online from the comfort of your own home. Upon completion of the course, you will be halfway to the coveted SSI Divemaster and receive your Science of Diving certification.

SSI Ecology Specialty programs provide students with the basic knowledge and skills needed to identify various species of marine organisms and explains their role in ocean ecosystems.

The SSI Enriched Air Nitrox program will teach you how to safely plan and dive with enriched air mixtures of up to 40% oxygen. Diving with enriched air can increase your no-decompression limits, increase your safety, and reduce the required length of your surface intervals when compared to air.

Becoming an SSI Specialty Instructor is easy. Continue your diving education as an instructor by enrolling in a Specialty Instructor Seminar for each of the diving specialties you would like to teach.

As a dry suit diver you can dive warm and comfortable in cold waters all year round. Only dry suit diving opens up the special underwater landscapes of cold water to you: dives on the icebergs in the remote Arctic or fascinating places teeming with life despite the cold. Dry suits are also great if you dive several times a day. Instead of struggling to get out of the cold, wet wetsuit each time, the dry suit diver simply leaves his suit on. The best way to dry suit dive is the SSI Dry Suit Diver Specialty course. Here you will gain the necessary knowledge and learn all the skills you need to dive safely and comfortably in a dry suit. This includes how to use the special equipment and how to deal with difficult situations and problems with the dry suit. At the end of the course you will receive the SSI Dry Suit Diving Specialty certification.

SSI Advanced Open Water Diver - Discover new depths with Diving Cres If you can't decide which specialty programs suit you best, the SSI Advanced Open Water Diver program at Diving Cres is for you! This course gives you the opportunity to try out five different specialty areas - including Deep Diving and Navigation, plus three others of your choice. The Advanced Open Water Diver program is the perfect opportunity to expand your knowledge, learn new skills and experience exciting adventures in the underwater world around Cres, Croatia. During the program, after a detailed briefing with your SSI Instructor from Diving Cres, you will complete one open water training dive per specialty. You will gain a comprehensive insight into each discipline - from deep dives and navigation to other specialty topics such as buoyancy control, night diving or wreck diving. The best thing about it: you have full flexibility! You can complete the entire specialty training at any time, and all dives already completed will count towards your Advanced Open Water Diver training. With the SSI Advanced Open Water Diver course at Diving Cres, you will develop into a more experienced, safer and more versatile diver - ready for any new adventure underwater. Expand your diving skills with Diving Cres - your SSI Dive Center on the island of Cres! Book your Advanced Open Water Diver course in Croatia now and discover new depths!

The SSI Try Scuba program is the best way to try scuba diving for the first time. You will be in confined water and well looked after by your instructor, so you can enjoy those first unforgettable breaths underwater and experience the magic of scuba diving. At the end of this short course, you will have earned your SSI Try Scuba recognition card and undoubtedly want to go diving again. Endless scuba diving adventures are waiting for you and this course is where it all begins. Start today!

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!

Many exciting dive sites are located in deeper water. Without proper training, this kind of diving puts you at risk. The SSI Deep Diving Specialty will give you the ability to safely and comfortably plan and conduct dives beyond 18 meters, and is a prerequisite for some advanced training.