One of the last tribes untouched by modern civilisation, the Sentinelese do not welcome visitors of any kind. Even when the Indian Navy attempted to give aid after the 2004 tsunami, they attempted to shoot the helicopter down with spears.
After a series of viscous attacks on unwanted visitors, the Indian government have implemented a 3 mile ban around the island.
Filmmaker Shan Mohammad has made a short documentary on the tribe, compiling rare and unseen footage: