Britain about to plunge its economy into unknown waters? If it does, with a vote to leave the EU, there's concern here they're more exposed than the average.>> I'm Reuters reporter Jacob Greaves in the Loch Neagh eel fishery in Northern Ireland where the vast majority of these are destined for continental Europe.
But with Britain's upcoming EU referendum, the journey there might be about to get a big trickier.>> In an average year, this fisherman's cooperative exports around 400 tons of eels. 80% of those are destined for the Netherlands and Germany. Chairman Pat Close fears the impact of a Brexit on day to day cost.
>> We ship all of our eels live each day, five days a week on air freight, it's very expensive. If there were other tariffs to be implemented, obviously, they would have an affect on margins.>> The British government shares these concerns, claiming Northern Ireland sells far more of its food and drink to the EU than the UK average.
And that it stands to lose more if trade with the Republic of Ireland is hit by EU tariffs after a single market exit. But Vote Leave campaigners say there are greener pastures elsewhere.>> People will talk a lot about farmers but they don't like so much talking about fisherman.
The regaining of control over waters, the ensuring that we get better shares of the quotas would be a real positive boost to the fishing industry.>> Marine fisheries across the UK have largely echoed that sentiment. But back inland there's concern about livelihoods, uncertainty for industries which are already struggling.
>> There's a lot of fair people counting on this local economy and its getting harder ever year.>> Northern Ireland is both on the fringes of the UK and frontier of the EU, leading to warnings it could be the first and worst hit by any changes looming on the horizon.