Then the fishmongers have to clean and defrost the giant fish. Next up is cutting the massive tuna into small pieces with a bandsaw. The market is a very noisy place, full of rumbling trucks ...

or what's called kuro maguro in Japanese. They get their tuna from a number of different sources, including Japan's Tsukiji fish market. There are several different varieties of tuna, but bluefin ...

A Japanese sushi tycoon has paid a whopping $3.1m (£2.5m) for a giant tuna making it the world's most expensive. Kiyoshi Kimura bought the 278kg (612lbs) bluefin tuna, which is an endangered ...