The refresher course has two parts: online learning and physical training. In the online course, you will go over the basic principles of scuba diving, including dive planning, dive equipment, and underwater communication. You will review the information through a series of interactive quizzes and videos. You’ll need instructors for the physical training. This training involves confined water skills practice and open water dives. The confined water skills practice component takes place in a swimming pool or shallow water environment, where you will have the opportunity to practice basic scuba skills such as mask clearing, regulator recovery, and buoyancy control. Your PADI instructor will guide you through the skills and provide feedback and coaching as needed. Finally, the open water dives component involves at least two dives in a natural environment in one of the many diving sites in the Andamans. It can be a coral reef or even a wreck site. During the dives, you will apply the skills and knowledge you learned in the knowledge review and confined water skills practice components, under the guidance of your instructor.