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New threat to Pacific humpback whales in Canada?

30 November 2014 Last updated at 7.28 clock GMT

Once hunted to extinction, humpback whales, the Canadian Pacific back in greater numbers and the Canadian government has downgraded its status as "endangered" to "special concern".

However, there are concerns that new risks of further exploration of oil and natural gas play whales.

Brandy Yanchyk reported the coast of British Columbia.

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