When last we checked in on the world’s commercial fish stocks, they were in danger of collapsing within decades. And, sorry to say, they still are, according to a United Nations Environment Program report ominously titled “In Dead Water.” Factor in climate change, overfishing, and pollution “and you see you’re potentially putting a death nail in the coffin of world fisheries,” says UNEP head Achim Steiner. To give a sense of the scale (ho ho) of the problem, our finned friends are the main protein source for some 2.6 billion people.