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May 24, 2012 05:05 PM ET // Tim Wall
The Peruvian government claims that nearly 900 dolphins died of natural causes. A separate study disagrees.
Jan 23, 2012 10:55 AM ET // Tim Wall
Apr 4, 2012 06:31 AM ET // Tim Wall
In Peru, more than 3,000 dolphins have washed ashore dead on the north coast beaches so far this year.
Mar 29, 2012 06:29 AM ET // Tim Wall
The survival rate of the rare Hector's dolphins in the protected area increased by 5.4 percent over the past 21 years.
Apr 3, 2012 07:06 AM ET // Tim Wall
NOAA biologists believe that the 714 dead dolphins found since February 2010 represents only a fraction of the actual death count and has declared the die-off an "Unusual Mortality Event."