Scientists seek to understand increase in grey whale deaths on West Coast

The recent sighting of an emaciated grey whale off Vancouver Island and the discovery of a dead whale washed up on a B.C. beach highlights concerns that the marine mammals are dying in increasing numbers. 

Angela Menzies was beachcombing with her son on northern Vancouver Island in April when they spied something on the beach that looked like a huge tree trunk, but with a fin.

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