Ontario's Great Lakes shows the cultural and magnificent underwater ghosts and history of shipwrecks. However, the invasive mussels and climate change can threaten the preservation of shipwrecks. Read here.
Inside the battle to preserve the underwater ghosts of Ontario s Great Lakes cbc.ca - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cbc.ca Daily Mail and Mail on Sunday newspapers.