Tokyo's Tsukiji Market is the world's largest fish market - hundreds of kinds of seafood from around the world are sold there. 40,000 people work at Tsukiji each day, and hordes of foreign tourists come to check out the vast, buzzing hive of activity. This time on Japanology Plus, we explore the customs and commerce of Tsukiji Market. Our guest is Masataka Fujiwara, a seafood expert who's been visiting Tsukiji regularly for more than 30 years. And in Plus One, Tsukiji etiquette for visitors.