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.