49 wall dive sites in United States.
Biggest areas: Hawaiian Islands (9), California (6), Florida (6), Mariana Archipelago (6) and Alaska (2).
Recorded maximum depths range from 3 m to 80 m (22 of 49 sites have a depth).
By level: 10 beginner, 7 intermediate, 5 advanced and 1 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.