Another source would be fisheries' bycatch.

These animals and their demise occurs in the tuna fisheries.

And that's the fisheries off the state of North Carolina.

People are losing their jobs because the fisheries are collapsing.

And then we have the under performance of fisheries that is 50 billion dollars.

The consequence of that is that all those nutrients that fuel the great anchoveta fisheries, of the sardines of California or in Peru or whatever, those slow down and those fisheries collapse.

And in the Mediterranean, in the swordfish net fisheries, they make up up to 90 percent.

And I was free for dinner, and I went out to dinner with the Minister of Fisheries in Kiribati.

I could imagine a policy that lets Canada and America fish, because they manage their fisheries well, they're doing a good job.

And to be able to do that is a tremendous fisheries tool, because knowing how many fish are there is really critical.

And the fisheries for this tilapia sustained lots of fish and they had a good time and they earned more than average in Ghana.

The Phoenix Islands and all the equatorial parts of our planet are very important for tuna fisheries, especially this yellowfin tuna that you see here.

I know that because I have friends who work on fisheries' research vessels who have sent to me reports from boats out in the ocean.

She looked at thousands of cases of humans sharing watersheds, forestry resources, fisheries, and discovered that yes, in case after case, humans destroyed the commons that they depended on.

But many of you have said, if you get these marine protected areas, or a reasonable regime for high seas fisheries management in place, how are you going to enforce it?

After the talk, the Minister of Fisheries walked up to me and he said, Greg, do you realize that you are the first scientist who has ever come back and told us what they did?

Today, the depletion of ocean fisheries is so significant that effectively it is effecting the ability of the poor, the artisanal fisher folk and those who fish for their own livelihoods, to feed their families.

But unfortunately, CCAMLR, the regional commission in charge of conserving and managing fish stocks and other living marine resources, is unfortunately starting to give in to fishing interests and has authorized the expansion of toothfish fisheries in the region.

That is, we have regional management regimes within the exclusive economic zone, but we need to scale these up, we need to build their capacity, so they're like the Southern Ocean, where they do have the two pronged fisheries and conservation organization.

Now I remember that dinner I had with the Minister of Fisheries 10 years ago when we first brought this up and I got quite animated during the dinner and said, Well, I think that the conservation community might embrace this idea, Minister.

And if you see the benefits of the mangrove in terms of the storm protection and cyclone protection that you get and in terms of the fisheries, the fish nurseries, that provide fish for the poor, that answer is more like 11,000.

We hope that we can sometime clean up oil spills, or we can gather or collect plastic in the ocean, or we can have swarms of our machines controlled by multi player video game engines to control many of these machines, to monitor coral reefs or to monitor fisheries.

So what we need to do is to stand up boldly, singly and together, to push governments, to push regional fisheries management organizations, to declare our right to declare certain areas off limits to high seas fishing, so that the freedom to fish no longer means the freedom to fish anywhere and anytime.

They used to be fisherman, of course, but we stole their fish and dumped a load of toxic waste in their water, so what we're trying to do is create security and employment by bringing a coastguard along with the fisheries industry, and I can guarantee you, as that builds, al Shabaab and such likes will not have the poverty and injustice any longer to prey on those people.