07/25/2010 05:12 am ET Updated May 25, 2011

Gulf Oil Spill: Zoos And Aquariums Are On Alert

Thirty-two national wildlife refuges are at risk because of the BP oil spill in the Gulf of Mexico. They span five states -- Alabama, Louisiana, Florida, Mississippi and Texas -- and threaten dozens of species that are already endangered, including sea turtles, manatees and whooping cranes.

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