18 wall dive sites in Canada.
By area: British Columbia (9), Ontario (3) and Québec (1).
Recorded maximum depths range from 10 m to 183 m (16 of 18 sites have a depth).
By level: 8 beginner, 1 intermediate, 4 advanced and 3 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.