Bluefin

An ex-bluefin tuna found during the Rainbow Warrior's previous visit to the Mediterranean in 2007 © Greenpeace/Care

Imagine you are an Atlantic bluefin tuna. You've been out at sea most of the year in cooler waters, feeding away and generally getting on with being a big ol' fish at the top of your food chain. You have not a care in the world, save the occasional orca or shark scare.

Then spring is sprung, and the urge takes you. Forces you don't really understand compel you to head back to warmer waters, and a certain key place, sacred to you bluefin. The bluefin equivalent of a romantic dinner and some subdued lighting is a sheltered warm sea, and conditions have to be perfect, or it ain't happening. But even that's not enough. Because of the, er, messy, way most fish reproduce, they congregate together, and only release sperm and eggs when the time and the temperature is right: 23 degrees Celsius. It's the perfect temperature for a bluefin love-in.

For many people it seems that 'tuna' is synonymous with 'sushi'. And there's certainly no doubt that the demand for high quality tuna to feed the fashionable sushi restaurant demand has had a devastating impact on some tuna populations. None more so than bluefin tuna.

Both the Atlantic and Southern bluefin species are in dire trouble, trouble caused by overfishing, to satisfy a demand for the fatty red belly meat in expensive sushi, sold as 'toro'. It's a demand that has led to a fishing frenzy, in places like the Mediterranean , over the past few decades. It's a frenzy that has trampled over artisanal fishing methods and harvested bluefin tuna with little or no regard to the scientific advice, or the law. They are fisheries that have been so spectacularly mismanaged, it's not even laughable.

I've tried several times to write a 'wrap-up' blog for this year's CITES meeting. But usually I end up just banging my head against the keyboard in despair.

This CITES meeting was a turning point – the governments in the room decided that they weren't there to restrict trade to protect species, but rather there to protect trade as best they could. Nowhere was that more evident than the marine proposals.

Sharks were shafted, corals crushed, and bluefin obliterated, as the assembled governments played politics, and wrung their hands earnestly over the adverse economic effects of actually protecting any of these endangered species. Conveniently ignoring the fact that it's their inability to restrain trade which endangered them in the first place...

The breaking news today is that governments at the CITES meeting at Doha have voted AGAINST a trade ban on Atlantic bluefin.

Words cannot express how frustrating this is. The science and scientific backing is incontrovertible. The public will and pressure is immense. The species could be  commercially extinct within just a few years.