“This is certainly one of those interesting and rarely detected phenomena. It’s good that we have this documented as part of the world’s natural history, but we’d certainly have to find many more before we could draw any conclusions about what caused this.”
Michael Wagner, MSU assistant professor of fisheries and wildlife
MSU scientists have confirmed that they have found the world's first two-headed bull shark.
They have determined that it is a single animal, rather than conjoined twins.
It has two heads, two hearts and two stomachs, and is joined at the back to form a single tail.
MSU's research is being published in the Journal of Fish Biology.
The shark was found in the uterus of an adult bull shark in the Gulf of Mexico in April of 2011.
It died shortly after being removed.
Researchers say it is impossible to know if the animal's condition was caused by pollution.