A plan in Nova Scotia to build North America's first coastal refuge for whales formerly kept in marine parks has come under fire from Marineland Canada. The marine park in Niagara Falls, Ont. — the only venue in Canada that has captive whales — released a study this week alleging the proposed site for the Whale Sanctuary Project is too polluted. Citing provincial studies, Marineland said the site in a bay near Port Hilford, N.S., has been contaminated by two toxic tailings dumps left behind by gold mines that operated between 1860 and 1939 in the historic Wine Harbour Gold District.