Sharks have inhabited the world’s oceans for over 400 million years, and in that time they’ve developed some amazing evolutionary characteristics. From snouts studded with complex electro-receptors to skin made of tiny tooth-like structures, called dermal denticles, sharks are perfectly adapted to their environment. How a shark reproduces is one of the most interesting aspects of its biology. The precise mating and reproduction rituals of most shark species are still unknown, thanks to the difficulty of researching subjects dispersed across the vast expanse of the ocean. However, through observation of individuals both in captivity and in the wild, we do know that sharks produce young in a variety of ways; by laying eggs, by producing eggs that hatch in the womb, and by giving birth to live babies. There is one specific method of shark reproduction, however, that is truly astounding, known scientifically as parthenogenesis.