Canned tuna is big business. Australians buy over 250 million cans a year. The choices tuna brands make have a huge impact on our oceans. While many brands are switching to sustainable fishing methods, the biggest brand - John West - is hooked on destructive fish aggregating devices (FADs) with purse seine nets. For every 9kg of tuna caught using this fishing method, an extra 1kg is 'bycatch' like sharks, rays, baby tuna and turtles. John West is the largest seller of canned tuna in Australia - it has a responsibility to stop destroying our oceans and ban the use of destructive FADs.