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.

In a rare case of fertilisation, a shark was born in an aquarium without the presence of a male specimen, causing a stir in the scientific community as they investigate the unusual occurrence. The egg was discovered at the Shreveport Aquarium in Louisiana,

In a remarkable development, the Shreveport Aquarium has announced the hatching of a healthy female swell shark pup named Yoko. This event is particularly intriguing as it occurred without male sharks,