Good Diver is a diving school based in Seogwipo, on Jeju Island, run from a facility that also organizes regular marine-life survey dives. The school's course menu covers the full recreational path -- Discover Scuba trial dives, Scuba Diver, Open Water Diver, a Reactivate refresher for lapsed divers, Adventure Diver, Advanced Diver, Rescue Diver and Emergency First Response -- plus a range of specialty courses, continuing up to Divemaster and Instructor level. Good Diver also offers equipment rental and package deals combined with instructor registration. A distinctive part of its community program is a citizen-science style survey group (nicknamed the 'snail class' and 'fish class') that conducts regular underwater surveys at well-known Seogwipo dive sites -- Seopseom near Bomok harbor, Munseom near Seogwipo harbor, and Beomseom near Beophwan harbor -- logging fish and invertebrate sightings and publishing the results. The center is located in the central hills area of Seogwipo and communicates primarily in Korean.