This performance based adventure program is designed to lead you step-by-step in your future exploration of the underwater world. Open Water dives are not required, but encouraged! The agency is 'SDA' (Scuba Divers of America). An accredited new agency is the same as PADI, NAUI, SSI, YMCA, NASE, CMAS, IDEA, NASDS, etc..If your concern is.. 'Will it work-' 'Can I go anywhere and get Nitrox-' The answer is Yes! You get the book work done from home, complete each quiz and the final exam, we send a Nitrox Scuba Diver Card to you. That is it! Begin your adventure today!!This Nitrox Scuba Diving home study course allows you to learn at your own pace. Everything is done online, so there is nothing to download.Simply add the course to your shopping cart and we will send you a Username and Password so you can log on to the course right away.Students can complete the course entirely from home or office at any time of the day or night. Don't spend valuable vacation time in the classroom! Get the book work done from home!This Nitrox scuba course is designed to teach you the Physics and Physiology of Nitrox Scuba Diving. Graduates receive a Certificate of Completion and Nitrox Scuba Certification Card that is recognized anywhere in the world. After completing each section, you will be given a quiz. You must receive a 100% score on each quiz before proceeding to the next section. Don't worry, our staff of Certified Instructors will help you, FREE of charge, if you get stuck! After you have completed all the quizzes, you will be given a Final Exam.