In Japan, seafood is a matter of national identity. Fitting then, that the planet's largest wholesale fish and seafood market, Tsukiji, sits at right at the heart of Tokyo, on a sprawling site in Chuo ward. Doubtless Tsukiji has very real cultural and economic significance, but with dire current trends in marine biodiversity and fisheries and Tsukiji processing around 700,000 metric tonnes of marine life annually, it stands as a model for a bleak global picture.