Scientists have confirmed the discovery of the first-ever,
two-headed bull shark.
The study, led by Michigan State University and appearing in
the Journal of Fish Biology, confirmed the specimen, found in the Gulf of
Mexico April 7, 2011, was a single shark with two heads, rather than conjoined
twins.
There have been other species of sharks, such as blue sharks
and tope sharks, born with two heads. This is the first record of dicephalia in
a bull shark, said Michael Wagner, MSU assistant professor of fisheries and
wildlife, who confirmed the discovery with colleagues at the Florida Keys
Community College.