Looking at existing sustainability issues surrounding tinned tuna campaigns

http://www.greenpeace.org/australia/en/what-we-do/oceans/Take-action/canned-tuna-guide/

http://www.greenpeace.org/new-zealand/en/press/Fisheries-companies-win-contract-to-monitor-themselves/

http://www.greenpeace.org/new-zealand/en/campaigns/oceans/Defending-our-Pacific/The-solution-is-to-Change-Your-Tuna/

http://www.greenpeace.org/new-zealand/en/campaigns/oceans/Defending-our-Pacific/The-solution-is-to-Change-Your-Tuna/

https://www.youtube.com/watch?v=o8OAKADo9yg

 http://www.greenpeace.org/usa/oceans/tuna-guide/