Silent Invaders - St Lawrence Seaway System
- 8 years ago
Watch this episode and more at http://www.wildtv.ca
A debate exists over ballast water from the giant cargo ships that pass through the canal, the Great Lakes St.Lawrence Seaway system is a paradox in the daily battle with the silent invaders.
2662
A debate exists over ballast water from the giant cargo ships that pass through the canal, the Great Lakes St.Lawrence Seaway system is a paradox in the daily battle with the silent invaders.
2662