Two headed bull shark. Photo courtesy of Michigan University

EAST LANSING (USA) – Scientists at Michigan State University have confirmed the discovery of the world’s first-ever two-headed bull shark. It has two heads, two hearts and two stomachs, and is joined at the back to form a single tail.

The shark was found in the uterus of an adult bull shark in the Gulf of Mexico in April of 2011.

The scientists call it “certainly one of those interesting and rarely detected phenomena”, but cannot yet draw any conclusions about what caused this.

The shark had little, if any, chance to survive in the wild, according to the scientists.

The research was published in the Journal of Fish Biology.