Pulo Jehat is an island located in the Straits of Johor. The name means Wicked Island.It is located south of Tioman Island. Heritiera littoralis can be found on the island.In 1938, the British built three gun emplacements on the island to defend the straits. The island is the supposed resting place of a witch doctor named Merah, placed there because it was believed that his spirit could not cross water.