SANTIAGO, CHILE – A "red tide" outbreak is widening in southern Chile's fishing-rich waters, the government said Wednesday, deepening what is already believed to be one of the country's worst environmental crises in recent years.

The red tide — an algal bloom that turns the seawater red and makes seafood toxic — is a common, naturally recurring phenomenon in southern Chile, but the extent of the current outbreak is unprecedented.

The southern region of Los Lagos has been affected in recent weeks by the largest red tide in its history, prompting fishermen deprived of their livelihoods to angrily demand more support from the government.

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