Prison Island, officially known as Koh Tarutao, is a small island located in the Andaman Sea off the coast of Thailand. It is part of the Tarutao National Marine Park and is known for its beautiful beaches, diverse marine life, and lush tropical forests. The island has a rich history, having served as a prison for political prisoners in the early 20th century. Today, Prison Island is a popular tourist destination, attracting visitors for its natural beauty and opportunities for activities like snorkeling and hiking. The remnants of the old prison can still be seen, providing a glimpse into the island's past while visitors enjoy its serene environment.