FILE - In a April 28, 2009 file photo, water pours off the tail of a humpback whale as it dives at the Stellwagen Bank National Marine Sanctuary off the coast of Massachusetts. Efforts to save ... more 
FILE - In a April 28, 2009 file photo, water pours off the tail of a humpback whale as it dives at the Stellwagen Bank National Marine Sanctuary off the coast of Massachusetts. Efforts to save endangered animals are making a measureable difference, even as a fifth of the world's backboned species _ mammals, birds, reptiles, amphibians and fishes _ are threatened with extinction, a huge new analysis says. less 
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Associated Press | Photo By Charles Krupa, File
Tue, Oct 26, 2010 7:12 PM EDT