Matthew Arnold wrote a poem called "The Forsaken Merman" about a merman whose human wife abandoned him and their children.[8][9] Mermen may feature in science fiction and fantasy literature, for example, science fiction writer Joe Haldeman wrote two books on Attar the Merman in which genetically enhanced mermen can communicate telepathically with dolphins. Samuel R. Delany wrote the short story Driftglass in which mermen are deliberately created surgically as amphibious human beings with gills,[10] while in J. K. Rowling's Harry Potter series merpeople live in a lake outside Hogwarts.[11]