1 North Sentinel Island
North Sentinel Island is one of the Andaman Islands, in the Bay of Bengal. The heavily forested island is surrounded by coral reefs and lacks natural harbours.
But finding a harbour should be the least of your worries as you may not make it to the shore because the island is home to the Sentinelese, an indigenous people in voluntary isolation who have rejected, often violently, any contact with the outside world. They are among the last tribal people to remain virtually untouched by modern civilisation.
In January 2006, two fishermen fishing illegally in prohibited waters were killed by the Sentinelese when their boat drifted too close to the island. In November 2018, John Allen Chau, a 26-year-old US missionary was killed during an illegal trip to the restricted island, planning to preach Christianity to the Sentinelese.
The area is patrolled by the Indian Navy.