The analysis of the weapons used by the indigenous people of the Gilbert Islands in the central Pacific Ocean, which primarily use shark teeth, indicate that at least three species of shark have disappeared from the waters near the islands. Joshua Drew, a conservation biologist at Columbia University in New York, studied the weapons housed in the collection of the Field Museum of Natural History in Chicago, Illinois, and presented his findings at the 2012 Ecological Society of America’s Annual Meeting in Portland last week.
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