I think there were many wild promises made by the Brexiteers. One of them was that leaving the EU would enable the UK to become an independent coastal state, which we were nearly 50 years ago, but I think that completely ignores some of the realities of life, one of which is that fish don't need passports to cross boundaries, and whatever policies are adopted by the European Union once we've left will affect the numbers of fish that are swimming in our waters, just as much as they did before.

I agree that the EU fisheries policy is not one of the most successful policies completed by the EU, and that was because politicians were always interfering with what were essential environmental and sustainability measures. So, always at the last-minute negotiations at 4.00 a.m. people would water down the proposals that had been put together by the experts. So, we are where we are for a lot of reasons, but not because we were or weren't a member of the European Union.

As Simon Thomas has already pointed out, most of the fish that is landed by Welsh fishermen is not subject to quotas at all, but, nevertheless, we need to ensure that the agreements that are reached with the European Union don't avoid or lose the trade that is already experienced by some of our Welsh ports. I understand that a third of the value of fish landed in Welsh ports comes from EU vessels, and presumably we want to continue to have the benefit of that trade. If half the boats in Milford Haven are Belgian boats, if we don't have a sensible arrangement with our European neighbours, then that will be to the detriment of those ports and the trade that brings.

But I absolutely agree with David Melding and Simon Thomas, and indeed the Cabinet Secretary, that environmental sustainability is a must-do in everything that we are doing relating to the fish because, if we don't, we simply will kill the golden goose. Obviously, it would be wonderful if more Welsh people were embracing the wonders of Welsh shellfish, which David Melding has waxed lyrical on often, and we need to remember that import substitution has got a lot of merits. Oysters used to be the main ingredient for scouse amongst poor people in the port of Liverpool. I'm afraid oysters are now a rare delicacy; so we don't want the same thing to happen to other shellfish, like mussels.

I have to raise the dreadful case of the scallop fishermen a few years ago, who were fined a derisory £50,000 for plundering Welsh scallop beds, when the catch alone was worth £400,000, in the Cardigan Bay special area of conservation. So, this remains a major issue regardless of whether we're in or out of the EU. We have to ensure that people aren't just flouting the law around maintaining the viability of our resources.

Obviously, one of the other massive issues that we face is the fact that all fish nowadays—you can see the plastic detectable in all fish, apparently, that is being landed. That, of course, is really undermining our enjoyment of fish. So, we need to have both of these policies going hand in hand: eliminating plastics from our oceans, and ensuring that people aren't over-fishing, in order to ensure that Welsh fishing people will continue to be able to earn a decent living from fishing—what is a very dangerous job, and something that we will continue to want to enjoy for the future.