We can't be responsible for people if they are attacked. Besides, anyone foolish enough to believe all this deserves to be eaten.
Media Hoaxes - Fred Fedler

--from a "spokesman for the National Biological Foundation" from a story in the Herald-News (Roscommon, Michigan) reporting on scientists' experiment of releasing freshwater sharks into three northern Michigan lakes to see if they would breed.

 

The key bit of info here? The date of publication: April 1, 1981.

And yes, people did believe this story. Even though the final sentence is a huge hint: "Doherty also noted that April 1 is a foolish time to be telling fishy stories."

 

Quote from the book: Media Hoaxes by Fred Fedler