Hold on to your Mark Kurlansky books, they might become historical artifacts. The cod of the Gulf of St. Lawrence have 40 years left, at best, and only 20 years if fishing stays at current levels. Douglas P. Swain and Ghislain A. Chouinard report on this imminent extinction in the latest Canadian Journal of Fisheries and Aquatic Sciences, only, being scientists, they call it extirpation. Technically, extinction requires you to prove all the fish are gone, while an extirpated population is barely hanging on -- too small to sustain itself, much less feed people or wildlife.
This is the second Atlantic cod stock to crash in the region, and even severe restrictions haven't brought the fish back. Fish mortality is high and getting higher, with no clear answer or remedy. Once upon a time, cod were money; today they're just emulating the financial markets, with no bailout in sight.
It's open access so you can enjoy the whole paper.