A shark's rare "virgin birth" in an Italian aquarium may be the first of its kind, scientists say. The female baby smoothhound shark (Mustelus mustelus) — known as Ispera, or "hope" in Maltese — was recently born at the Cala Gonone Aquarium in Sardinia to a mother that has spent the past decade sharing a tank with one other female and no males, this rare phenomenon, known as parthenogenesis, is the result of females' ability to self-fertilize their own eggs in extreme scenarios. Parthenogenesis has been observed in more than 80 vertebrate species — including sharks, fish and reptiles — but this may be the first documented occurrence in a smoothhound shark.