Yoko the swell shark was born in a habitat of all-female sharks who hadn't seen a male in years. The aquarium has two possible explanations — and hopes to get confirmation in the coming months.

A female swell shark gives birth to a pup without coming in contact with a male, and now scientists are wondering how this is ...

No Daddy Shark in sight: Zoo greets a cute shark pup after apparent parthenogenesis ... Feldheim said, from the bonnethead to the common smooth-hound. With some, like the zebra shark and ...

Meanwhile, there have been published cases of parthenogenesis involving more than half a dozen shark species, Feldheim said, from the bonnethead to the common smooth-hound. With some, like the ...