Where have all the codfish gone?

The mega-decline in cod and other fisheries across the North Atlantic Ocean threatens the livelihood of fishermen and communities in New England and Atlantic Canada. One suspect in the disappearance of cod and other groundfish is the food source for their young: a planktonic copepod crustacean, no larger than a grain of rice. Recent changes in local copepod populations have co-occurred with declines in fisheries elsewhere, such as the collapse of the cod fishery in Europe's North Sea.

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