Take the SSI Marine Ecology Specialty course and find out how marine organisms interact with each other and their environment and how different marine ecosystems influence each other. With this newly acquired knowledge, you will probably appreciate marine life in the sea even more. Upon completion of the course, you will receive your SSI Marine Ecology Specialty certification.

Take an Enriched Air Nitrox Specialty course if you want to shorten your surface intervals and extend your dive time. You'll spend more time exploring your favorite dive sites instead of waiting! With the course you will expand your diving knowledge to plan safe dives with enriched air mixtures up to 40% oxygen. After completing the course, you will receive an SSI Enriched Air Nitrox certification for 32% or 40%.

In the SSI Manta & Ray Ecology Specialty course you will learn how to dive with rays and distinguish between different rays. You will learn about the important role of rays in the marine ecosystem and why these noble animals need our protection. Upon completion of the course, you will receive your SSI Manta & Ray Ecology Specialty certification.

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.