“Zanzibar, or the Last Reason,” translated from the German, “Sansibar oder der letzte Grund,” is a novel by Alfred Andersch where one of the protagonists (a boy) daydreams the far away Zanzibar from his small hometown in Germany.  Maybe a bad case of fernweh, this island in his mind is actually located in the Indian Ocean, but it is less a concrete goal than the utopian place of a better future.  Water temperature: 30 degrees Celcius.