 The short ri of 6 chō has long been forgotten or not in use, thus today many believe and explain incorrectly that 99 is just an inference of its long distance.The actual length of the beach is approximately 66 km, making the original measurement by Minamoto no Yoritomo the correct one.In the Edo period (1603 – 1868) a new fishing net technology was brought from Kii Province, a province that covered present-day Wakayama Prefecture, as well as the southern part of Mie Prefecture.