Japan's Dentsu dives into AI to grade tuna quality in Indonesia / Canned tuna giant Thai Union anchors growth hopes in pet food / Mercury content in tuna can be reduced with new packaging solution / Some Century-brand tuna recalled because of undeclared wheat / Motorbike-sized tuna sold to Tokyo sushi restaurateurs for $1.3m / Tuna weighing as much as a grizzly bear sells for $2.3 million in Japan / US tuna cans linked to reports of forced labour of Indonesian fishers: Greenpeace Southeast Asia report / Is the EU going to lower the levels of mercury allowed in tuna? / Only one of Australia's most popular tuna brands passes sustainability test, first-of-its-kind review finds / Meet the Star of Sushi-Con: A 400-Pound Tuna