African penguins put researchers in a flap. Controlled fishing experiment raises controversy over cause of birds' decline on Robben Island.

BY MICHAEL CHERRY 
Robben Island is notorious as the site where Nelson Mandela spent 18 years in prison, but now the island’s 1,200 breeding pairs of African penguins are sparking a scientific controversy. At stake is the survival of an endangered species, as well as how fisheries around the world are managed.
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