This particular two-head is a bull shark embryo found inside a bull shark caught off the coast of Florida. The fisherman shared his find with scientists who published a paper on the specimen in the Journal of Fish Biology. Two headedness is called dicephalia, for those of you who want some big words to use to impress people in the bar after work. This is the first known 2-headed bull shark specimen.
The shark probably wouldn’t have lived because the two heads would cause problems when chasing prey, as well as a stunted body.