This Wednesday, Aug. 21, 2013 photo shows an identification tag _ the 

This Wednesday, Aug. 21, 2013 photo shows an identification tag _ the equivalent of a dolphin toe tag _ for a dolphin that had died on the Spring Lake N.J. beach and was brought to the Marine Mammal Stranding Center in Brigantine, N.J. for an examination. About 230 dolphins have died off the East Coast of the U.S. this summer, prompting a massive probe into the cause of their deaths. This dolphin was the 63rd to die on New Jersey's shores since early July. In the background is a tape measure used to calculate the size of the nearly 7-foot-long dolphin. (AP Photo/Wayne Parry)
Associated Press
This Wednesday, Aug. 21, 2013 photo shows an identification tag _ the equivalent of a dolphin toe tag _ for a dolphin that had died on the Spring Lake N.J. beach and was brought to the Marine Mammal Stranding Center in Brigantine, N.J. for an examination. About 230 dolphins have died off the East Coast of the U.S. this summer, prompting a massive probe into the cause of their deaths. This dolphin was the 63rd to die on New Jersey's shores since early July. In the background is a tape measure used to calculate the size of the nearly 7-foot-long dolphin. (AP Photo/Wayne Parry)
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