640 reef dive sites in East Asia.
By country: Japan (538), Taiwan (61), China (21), South Korea (18) and Hong Kong (2).
Recorded maximum depths range from 3 m to 65 m (528 of 640 sites have a depth).
By level: 32 beginner, 15 intermediate, 16 advanced and 2 technical.
Species confirmed at these sites by diver sightings (three or more independent divers) or by two or more independent sources, with the number of sites each is confirmed at.