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Associated Press
This undated picture released by the National Science Foundation on Wednesday, July 11, 2012, shows a close-up of an adult male gnathiid parasite. Arkansas State University marine biologist Paul Sikkel discovered the tiny blood-sucking marine parasite, a new species within the family of gnathiids, that infests fish on Caribbean coral reefs and named it "Gnathia marleyi" after Jamaican reggae icon Bob Marley. (AP Photo/National Science Foundation,  John Artim, Department of Biology, Arkansas State University)

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