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Fisherman Atsushi Sasaki reaches for his rod to fish for tuna in the Tsgaru Straits near Oma in northern Japan on 23 September 2008. Sasaki is one of around 200 fishermen in Japan who employ a sustainable method of fishing known as "ippon-zuri", or single-hook hand-line fishing, to land giant tuna. .Photographer: Robert Gilhooly