This is 2/3 hours tour, which is taking you by the Local boat (Dhow) from the beach of stone town to the prison island the boat will be ride about 35 minutes to reach the island where you can see amazing Giant Aldabra tortoise of 196 years and there you will have the new experience of feeding and massaging them, and after that you you visit the ruins of the prison and enjoying the swimming or snorkeling after all that.