Via Milwaukee Journal Sentinal: - «Frustrated by the mounting number of invasive species arriving in the bellies of overseas freighters, some conservationists are proposing a simple but radical solution: Ban the ships from the Great Lakes until they can figure out how to stop discharging
contaminated ballast water.
Around a decade later an unknown ship, probably from the Bay of Bengal, discharged
ballast water into the coastal
waters of Peru, releasing a strain of cholera that
contaminated shellfish.