Woolworths is being urged to dump Greenseas, after a survey found it was the only major canned tuna brand still using fish caught with FADs – a destructive and unsustainable method.

In its latest canned tuna shopping guide, environmental group Greenpeace has ranked Greenseas last for failing on key measures, including transparency about its sustainability policies, fishing methods and human rights record.

"Greenseas was the first to make a commitment that it will go FAD [fish aggregating device] free, but now it's the only one that hasn't met it, that's dropped it," said Greenpeace campaigner Nathaniel Pelle.

"Greenseas has provided no evidence that they have full control of their supply chain or chain of custody, which means consumers can't be certain about where and how the fish was caught."