Scientist Confirm this is exactly what it seems to be – Two-Headed Bull Shark
I know what you’re thinking…this is a pair of conjoined twin sharks – Wrong! Scientists at Michigan State University have confirmed that a two-headed bull shark discovered in 2011 is, in fact, exactly what it appears to be… one shark with two heads.
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.
The deformity is also referred to as an axial bifurcation, which is the result of an embryo failing to split properly into two separate individuals… halfway through the process of forming twins, the embryo stops dividing. As the MRIs show, the sharks have their own hearts and stomachs, with the rest of the body joining together in the back half to form a single tail.