Aquamarine is a large PADI 5 Star Career Development Center headquartered in Seoul's Gangdong district, with roughly 35 years of history in South Korea's scuba diving industry. The school covers the complete PADI training path from entry-level courses through instructor development -- including IDC staff instructor, specialty instructor, EFR instructor and MSDT instructor programs -- and also runs its own retail store for diving gear and equipment rental. Aquamarine operates branch locations beyond Seoul, including a facility in Jeju (Scuba In Jeju) and the Kingston Scuba Resort on Korea's East Coast near Uljin, used for regular weekend fun-diving trips. The center additionally runs an overseas outpost, Aquamarine Bohol, in the Philippines, offering package trips and tours for members. Its activities are organized around a monthly calendar of courses and dive trips, with galleries of trip photos, training photos and videos, and a company newsletter announcing seasonal promotions such as trial dives in Jeju and fun-diving events marking its anniversary.