Not your average baby shark: An aquarium welcomes a pup from an all-female tank

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.

Not your average baby shark: An aquarium welcomes a pup from an all-female tank
Yoko the baby swell shark was born on Jan. 3, some eight months after her egg was discovered in a tank with that only housed other female sharks.

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.

(Image credit: Morgan Nix)