ITDA Advanced Scuba is unique in the industry — most agencies certify from just 1–2 dives. ITDA requires 20 open water dives plus rescue skills. The course includes deep diving with decompression (40m/132ft), UW navigation, and 3–6 specialist ratings. This is the pathway to Dive Leadership and Professional levels. Elective dives from the Specialist Diver Level 2 range may be taken as part of this course and issued as additional certifications when course standards are met. Your instructor may charge extra for each elective course program.