According to Medieval legend, this race of Sea Turtle was the largest beast on the planet. So large, that Great Blue Whale would appear to be nothing more than a small ''Minnow Fish''. The Aspidochelone were said to be quite ancient (and it took many thousands of years for them to grow so large). In fact, the shell of the creature often grew into a small island or related land source. Many sailors would see mysterious islands seemingly appear and disappear (owing to The Aspidochelone going up to the service for air). They would often stay at the surface (afloat for several weeks before submerging).