Chile's jack mackerel in turn went farther south, cutting its catch by 40% in the first quarter of this year.

ECONOMIST: The season of El Niño | The

Also on the list: the abundant Chilean jack mackerel in the southern Pacific Ocean, for human consumption in Africa, and Antarctic krill, for fish oil and fishmeal.

FORBES: Blue Waters Gray Areas

From 1995 to 2011, the jack mackerel catch fell by 94%.

ECONOMIST: A paradise for anglers but a headache for regulators