Mitsubishi-owned international food and drink group Princes is on track to supply 100 percent responsibly sourced tuna by the end of 2019, for all brands and in all territories, having already reached the level of 90 percent by the end of 2017.

Princes defines "responsibly sourced" as fisheries that are either already certified according to the standards of the Marine Stewardship Council (MSC), or are involved in a time-bound Fishery Improvement Project (FIP) that is working towards achieving standards required for MSC certification.