In an astonishing twist of nature, a baby swell shark has been born in Louisiana’sShreveport Aquarium, despite being housed in a tank with only female sharks. The birth of Yoko, a shark pup, has raised eyebrows among scientists and aquarium staff alike, as there has been no male presence in the enclosure for over three years. The arrival of this little one has sent ripples through the scientific community, as this rare and mysterious event points to one of nature’s most mind-boggling reproductive feats. With no male sharks around, how exactly did…