Yesterday saw the start of the world's largest seafood trading event – the Brussels Seafood Expo 2007. Between the 24 and 26 April seafood companies from all over the planet will attend the Expo, where millions of euros worth of seafood are bought and sold. Much of this seafood comes from stocks that are massively over-exploited and caught using fishing gear that is highly destructive of the marine environment. So 35 Greenpeace campaigners from across Europe have converged on the site to engage with business people from the international seafood trade and ask them - what are you doing to make your industry more sustainable?