Florida manatees swim in the Three Sisters Springs while under the watchful eye of snorkelers in Crystal River, Florida in this January 15, 2015, file photo. U.S. wildlife officials plan to announce on January 7, 2016, whether the manatee should be downgraded from endangered to threatened status, following extensive review of Florida's "sea cow," a species long considered at risk of becoming extinct. (Photo by Scott Audette/Reuters)
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