57 wall dive sites in Africa & Indian Ocean.
Biggest countries: Tanzania (30), Mauritius (7), Madagascar (6), Mozambique (6) and Kenya (3).
Recorded maximum depths range from 5 m to 70 m (39 of 57 sites have a depth).
By level: 15 beginner, 4 intermediate, 11 advanced and 8 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.