While the Arctic Sunrise chases trawlers fishing destructively in the North Sea, a large campaign team is challenging exhibitors at the Brussels Seafood Fair with one message – "Is Your Seafood Sustainable?" And after two days we've saturated the venue with this message, creating the 'buzz' we were hoping for, it really is the word everyone is using right now! This, despite a somewhat over-reactive clampdown by the local police on activists displaying banners and leafleting outside the venue. So much for freedom of speech in the European capital…