|"'Feejee Mermaid' has become the generic term for the many fake mermaids that can be found around the world..."
This article contains information relating to a hoax. According to Cambridge dictionary a hoax is "a plan to deceive a large group of people; a trick."
The Abita Mystery House is located at Louisiana, and it contains many fake creatures such as the fiji mermaid, but perhaps the most odd is the bassigator. The people who made it call it Buford the Bassigator. This creature is most noticeably 22 feet long, with eyes the size of beach balls. You would then notice that it appears to be half alligator, and half bass. It is assumed to be a voracious predator. The known specimens are at the UCM museum mounted on a boat trailer and at Whitey's Fish Camp in Florida. The curator says that curious visitants shouldn't get too near, due to its sharp teeth and powerful bite. He claims that even though it's dormant, it's alive.
However, the creature is only made of plywood, paper mache, and chicken wire. Dave Kelsey and Joh Preble Buford are the people who created it. There are other Bassigators though. Some of them haven't been proved to be hoaxes, but most probably are.