Ballast water release from ocean vessels has been a major source of invasive species in the Great Lakes for over 60 years.
Articles on St. Lawrence Seaway
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The St. Lawrence is one of the most difficult rivers in the world to navigate. It has been the site of collisions, groundings and shipwrecks. Several thousand wrecks lie beneath its surface.
Approximately 8,000 merchant vessels travel the St. Lawrence each year. Its ports have become the catalysts that link trade, development and industrial innovation.


