PADI4D

padi 4dpadi 4d menonjolkan kualitas dan relevansi penelitian yang tinggi, memberikan kontribusi snifikan terhadap pengembangan ilmu pengetahuan dan solusi untukPADI (the Professional Association of Diving Instructors) is the most recognized dive training organization worldwide with over 30 million divers and counting. PADI Dive Instructors