After giving a talk at the Bailey-Matthews National Shell Museum in Sanibel, Cynthia Barnett was haunted by something she learned during her visit.

A survey of mostly out-of-state museum-goers revealed an overwhelming majority of visitors – some 90 percent – did not know that seashells are built by a living animal.

“Most people thought they were some kind of rock or stone,” Barnett said. “I was so disturbed by that fact I couldn’t even sleep that night.”

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