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Big Fishing Yields Small Fish

Researchers map predator loss and predict unstable oceans

By
11:51am, March 25, 2011

Sharks, billfish, cod, tuna and other fish-eating fish — the sea’s equivalents to lions on the Serengeti — dominated the marine world as recently as four decades ago. They culled sick, lame and old animals and kept populations of marine herbivores in check, preventing marine analogs of antelopes from overgrazing their environment.

But the reign of large predators now appears over &mdash

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