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 diving knowledge. Available online, you can obtain your SSI Science of Diving certification from home, preparing you for a diving career. Upon completion, you will be halfway to achieving the coveted SSI Divemaster certification and obtain the SSI Science of Diving certification.