Yes, Prison Island, also known as Changuu Island, is a short boat ride away from Zanzibar. Visitors can explore this idyllic island and be enchanted by its pristine beaches and crystal-clear waters. In addition to its natural beauty, Prison Island is home to giant tortoises, some over a hundred years old. Visitors can learn about their conservation efforts and relax on the secluded beaches, enjoying the tranquility of this hidden gem.