A swell shark hatched at Shreveport Aquarium in Louisiana after an egg was found in an all-female tank. Screengrab from a video by the Shreveport Aquarium A small shark swimming around a Louisiana ...

One possibility is that this represents a case of "parthenogenesis", a rare form of asexual reproduction exhibited in sharks that lets them give birth without needing to mate. When eggs are ...

A phenomenon called parthenogenesis, a form of asexual reproduction where the embryo develops from an egg without fertilization, could have occurred, the aquarium said. Alternatively, delayed ...