Bertie Gregory

So bluefin tuna previously, let's take the Mediterranean, for example, they go on this crazy migration in the Atlantic and then some of them come into the Mediterranean Sea to breed.

And so they would go past certain European countries a couple of times a year on their way into the Mediterranean and on their way out.

So these countries would get two chances to fish them each year when they swam past.

And what would happen was they would fish a huge amount during that period.

They would sell them mostly to the Japanese sushi market.

And it's classic supply and demand.

You sell lots of tuna, you flood the market, the price drops.

So what they realized is instead of fishing them and killing them, what if they ranched them?

So they would go catch a whole bunch, they would put them in these huge nets and they would keep them alive in these nets throughout the year.

So then they could sell them when the price was right.

And it was often said, oh, well, you know, this takes pressure off of hunting more from the wild.

I mean, that seems right.

Well, there's two flaws to this.

One is if you're catching a huge, huge amount,

Well, you're still removing them from the wild.

You're not actually farming those.

But the bigger issue is, okay, I visited one tuna ranch, okay?

And they had 24 nets.

In each net, they had 1,000 bluefin tuna.

And these bluefin tuna can be- Those things are massive.