Sea Monsters on MedievalThe sea monsters on medieval and Renaissance maps, whether swimming vigorously, gambolling amid the waves, attacking ships, or simply displaying themselves for our appreciation, are one of the most visually engaging elements on these maps, and yet they have never been carefully studied. The subject is important not only in the history of cartography, art, and zoological illustration, but also in the history of the geography of the 'marvellous' and of