There are couple of tribes on those Islands (Andaman and Nicobar). Some of the tribes have been contacted, some have never been reached (and are off-limits) whi

There are couple of tribes on those Islands (Andaman and Nicobar). Some of the tribes have been contacted, some have never been reached (and are off-limits) while some tribals have moved mainland in search of jobs and have mingled with the mainlanders. One of the tribal language went extinct because most of their tribe moved mainland and learnt Hindi/English/Tamil http://content.time.com/time/world/article/0,8599,1964610,00.html http://content.time.com/time/world/article/0,8599,1964610,00... This article should talk about specifically the Sentinelese tribe (but they are mixing up Bo and Andamanese tribes with Sentinelese). As far as we know there has been no contact with them ever. https://en.wikipedia.org/wiki/Sentinelese https://en.wikipedia.org/wiki/Sentinelese The rare sighting of them was during the boxing day tsunami and they had enough knowledge to predict it few hours before and move to higher ground.