Via The Conversation
"Tuna is the most popular canned fish eaten in Australia and one of the most popular fish produced worldwide. The total catch of tuna in 2013 was about 7.4 million tonnes. Tuna is a massive industry and most of this catch ends up in cans. But while each can of tuna might look similar, the environmental impacts of different brands vary. So, with a sea of “eco-friendly” labels and choices, how do you know which is the most sustainable?"