Monkey Island really exists. Its official name is Cayo Santiago, and it lies just off the east coast of Puerto Rico. Its entire population is a colony of monkeys and anyone from the University of Puerto Rico who goes there to study them. Cayo Santiago - Wikipedia PoTC has a small island near Puerto Rico. It's not as small as Cayo Santiago and it's south, rather than east, of the mainland. But PoTC's Puerto Rico is not accurate anyway as it's the stock game's Isla Muelle with a different name. So I propose that the small island which is home to a cult of Animists, at least until you go there and visit them, be renamed Monkey Island.