30 wall dive sites in Tanzania.
By area: Zanzibar (14), Pemba (9), Pwani (5) and Kaskazini-Unguja (1).
Recorded maximum depths range from 10 m to 70 m (20 of 30 sites have a depth).
By level: 9 beginner, 2 intermediate, 4 advanced and 6 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.