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15 of the biggest scientific hoaxes

By: Bryan Nelson on July 26, 2010, 12:15 p.m.
Fiji mermaid in a water tank

Photo: Wiki Commons/public domain

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Fiji mermaid

This incredible-looking creature was a P.T. Barnum museum staple, fooling hundreds of people into believing it was the mummified remains of a real mermaid. Despite its outrageous construction, many people believed it was genuine until it was revealed to be nothing more than the torso and head of a baby monkey attached to the tail of a fish.