FILE - In this April 10, 2008 file photo, a North Atlantic right whale breaks the ocean surface off Provincetown, Mass., in Cape Cod Bay. Marine conservation groups say the endangered North Atlantic right whale is having such a bad year for accidental deaths that all the mortality could challenge the species' ability to recover in the future. There are thought to be no more than 500 of the giant animals left. Biologists say there have been 12 known deaths of the whales since April, meaning about 2 percent of the population had died in just a few months. (AP Photo/Stephan Savoia, File)
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