Andaman and Nicobar Islands
Recently, the Anthropological Survey of India (AnSI) has come up with the first authentic demographic database of the Shompen tribe. It is one of the least known particularly vulnerable tribal groups (PVTGs) in the Andaman and Nicobar Islands. The study found that the group is heterogeneous with even differences in their dialect, contrary to the earlier belief that Shompens are a homogeneous tribe.