There are about 100 uncontacted native groups around the world, but none of them are more isolated than the Sentinelese tribe. Located in the northern Andaman Islands of India, these indigenous people conscientiously separate themselves from the outside world. In fact, their isolation has likely saved lives, as nearby tribes have suffered losses at the hands of outsiders who carry diseases or create hostility. Explorers commonly exploit native people and kill the animals they hunt for food.