Invasive “vampire fish” on killing spree in Great Lakes

The sea lamprey is an invasive species living in Canada's Great Lakes that had been kept under control for decades — until now.

The lampreys have experienced a surge in numbers, and it could have a devastating ecological and economic impact on the country’s biggest lakes.

Global's Erica Vella explains how the pandemic fuelled a population spike among the “vampire fish” and what's being done to stop them.

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