Canned tuna's secret catch

Check out the fishing method that is being phased out by New Zealand’s big canned tuna brands.

Video details

New Zealand’s five big tuna brands have committed to phase out a destructive tuna fishing method that kills sharks, turtles and baby tuna. This makes us the third country, behind the UK and Australia, to take steps to change to more sustainably caught tuna. This is good news for the Pacific tuna fishery which supplies most of New Zealand’s canned tuna. However, there is still more we can do to preserve tuna stocks and ensure we have tuna on our shelves, and in our Pacific Ocean, for the long-term:

  • The New Zealand Government must stand with our Pacific neighbours to ban the most destructive fishing methods, end overfishing and create marine reserves;

  • New Zealand’s tuna fishing companies must switch to more sustainable methods.

Until recently the Pacific had the world's last healthy tuna fisheries. These are now being overfished as industrial fishing fleets, which have exhausted tuna stocks in other oceans, are now concentrating their efforts in the Pacific.

All Pacific tuna stocks are in decline. Bigeye and yellowfin are the most at risk. Scientists have advised that fishing needs to be cut by up to 50 per cent to allow bigeye tuna to recover.

Many fishing fleets are using methods which are destructive catching five to 10 times more turtles, sharks and juvenile tuna compared to more sustainable fishing practices.

There are almost 6000 vessels licensed to fish in the Western and Central Pacific region. In 2012 those vessels caught over 2.6 million tonnes of tuna – around 60 per cent of the world’s tuna supply.

Foreign fishing vessels continue to steal tuna from the region, exploiting four pockets of international waters between Pacific islands nations. Illegal fishing is estimated to cost the Pacific region up to NZ$1.7 billion per year.

In 2013 we launched a report providing a blueprint for Pacific Island governments and regional bodies to promote a more sustainable and locally owned and operated tuna fishery in the region.

The report - titled Transforming Tuna Fisheries in Pacific Island Countries: An Alternative Model of Development makes detailed recommendations for how to develop smaller-scale and locally owned fisheries that will maximise economic returns, create local jobs and better protect countries’ precious tuna reserves for the long term.

The latest updates


Defend our Pacific

Image gallery | August 26, 2010

Greenpeace calls for urgent action to save Pacific tuna

Press release | August 23, 2010 at 9:58

Greenpeace is calling on the New Zealand Government to support a plan to make the Pacific's tuna fisheries sustainable following further reports of declining stocks.

Bluefin tunas

Publication | August 11, 2010 at 15:40

Southern and Atlantic bluefin tuna stocks have declined dramatically since the onset of industrialised fishing. Southern bluefin are Critically Endangered, and the two Atlantic stocks are Endangered and Critically Endangered.

NZ key to toothfish

Press release | August 6, 2010 at 11:00

In a international report released today the organization says the Ross Sea is in critical need of protection as a marine reserve and should be off limits to all fishing and industrial activity.

Defending the last ocean

Publication | August 5, 2010 at 20:09

This is the story of how our fishermen, having taken so many fish from the seas closer to home, are now venturing to the ends of the Earth in order to maintain our insatiable appetite for seafood. This is also the story of how a group of...

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