Enroll in the SSI Scuba Science specialty and you will develop a thorough understanding of the underwater world and its effect on the human body. This specialty is the required training for many SSI Professional programs, as well as some Extended Range programs, and is an essential way to expand your diving knowledge. Available online, you can receive the Diving Science Specialty certification from home and prepare to start your professional career. Upon completion of the program, you will be halfway to receiving the coveted SSI Divemaster rank.