Six aboriginal tribes are living in these islands. In the Andaman group of islands, there are four tribes, namely the Jarawas, the Great Andamanese, the Onges and the Sentinelese. They all belong to Negrito stock In the Nicobar group of islands live the Nicobarese and the Shompens, who belong to Mongoloid race. Out of above six tribes, the Nicobarese are in the mainstream of the society, employed in the administration and are quite advanced. Other five tribes are hunter-gatherers. Population wise, the Great Andamanese are less than 40 in numbers whereas Nicobarese are more than 4000. Other tribes’ numbers lie between the above two figures. The Sentinelese, who reside in the isolated North Sentinal island, are still hostile to human beings.