And that's something the oceans have been doing for us for a long time. As far back as we can go, we've seen an increase in the amount of food we've been able to harvest from our oceans. It just seemed like it was continuing to increase, until about 1980, when we started to see a decline. You've heard of peak oil. Maybe this is peak fish. I hope not. I'm going to come back to that. But you can see about an 18-percent decline in the amount of fish we've gotten in our world catch since 1980. And this is a big problem. It's continuing. This red line is continuing to go down.