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conservation groups are filing a lawsuit against several shipping companies that have discharged untreated ballast water into the Great Lakes in violation of the U. The nonstinging Mnemiopsis leidyi, for instance, thought to have been introduced to the Black and Caspian Seas via ballast water, has flourished to the point of decimating local ecosystems. says that he's virtually certain that transatlantic cargo ships picked up Hemimysis in ballast water in Europe. |
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