Japan has the world's biggest appetite for squid. Squid is eaten many different ways - sautéed, fried, as sashimi - and it features in countless local dishes across the country. However, to the Japanese, squid means more than just good eating: it's also used in rituals as a symbol of good luck. Recently, scientists have been discovering more about the fascinating lives of squid. On this edition of BEGIN Japanology, we look at the profound importance of squid to Japan's history and culture.