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. Explore the profound importance of squid to Japan's history and culture.