This is something I've hard multiple times, and it always reminds me
this unsettling graph:
<https://commons.wikimedia.org/wiki/File:Surexploitation_morue_surp%C3%AAcheEn.jpg>
[1]
I'm quite sure fishermen thought they had fugured out cod fishing in the
end of the 60s, but only a couple years afterwards it was too late to
stop the extinction of the stocks.
Forgive me if you don't consider it relevant.
Nemo
[1] Source:
http://www.maweb.org/documents/document.429.aspx.pdf