Chile's Record Toxic Tides May Have Roots in Dirty Fish Farming

A red tide crisis has stirred fishermen to unrest and may be at least partially linked to controversial aquaculture practices, while El Niño is also to blame.

Images of death have been arriving from southern Chile for weeks, each one seemingly more apocalyptic than the last. First there were thousands of dead salmon in aquaculture cages. Then there were rafts of dead sardines floating along the coast. Next, beached clams covered miles of shoreline. Then there were die-offs of jellyfish, birds, and even mammals.

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