The Chin and the Naga compose about 3 % of the population of Myanmar.
They are related tribes of Tibeto-Burman origin populating
a couple of hundreds of kilometers of mountain range in western
Myanmar (but not on the coast of the Indian Ocean) and the border
area to India. Both groups also live beyond the Burmese-Indian
border in India, where especially the Naga have aroused attention
by their zeal for increased autonomy.
The Chin and the Naga are for the major part attached to natural
religions, but an increasing number of both people have converted
to Christianity.
The most important are:
This page: http://www.cockatoo.com/english/myanmar/myanmar_people_chin.htm