29 dive sites in Tamil Nadu, Sri Lanka: 13 reefs, 2 wrecks, 1 shore dive, 1 wall and 12 other sites.
Recorded maximum depths range from 3 m to 40 m (20 of 29 sites have a depth).
By level: 13 beginner, 1 intermediate and 4 advanced.
Species confirmed at sites here by diver sightings (three or more independent divers) or by two or more independent sources, with the number of sites each is confirmed at.