Chet Van Duzer, author of the recent book Sea Monsters on Medieval and Renaissance Maps, will trace the history of sea monsters on European maps, beginning with the earliest mappaemundi on which they appear in the tenth century and continuing to the end of the sixteenth century. These sea monsters, whether they are depicted swimming vigorously, gamboling amid the waves, attacking ships, or simply displaying themselves for our appreciation, are one of the most visually engaging elements on these maps, yet they have never been carefully studied. Sea monsters are important not only in the history of cartography, art, and zoological illustration, but also in the history of the geography of western conceptions of the ocean. Moreover, the sea monsters depicted on maps can supply important information about the sources, influences, and methods of the cartographers who drew or painted them. In addition-- sea monsters are a lot of fun!