The arrival of a baby swell shark at an aquarium in Louisiana has caused a wave of excitement, after the egg hatched despite the fact that no male sharks appear to have been involved. Shark pup ...

The arrival of a baby swell shark at an aquarium in Louisiana has caused a wave of excitement, after the egg hatched despite the fact that no male sharks appear to have been involved. Shark pup ...

The arrival of a baby swell shark at an aquarium in Louisiana has caused a wave of excitement, after the egg hatched despite the fact that no male sharks appear to have been involved. Shark pup ...

A Louisiana aquarium has been left stunned by a 'virgin birth' in its shark exhibit. Baby swell shark Yokowas born in an all-female tank at Shreveport Aquarium. Experts believe Yoko's birth is due to ...

Baby swell shark Yokowas born in an all-female tank at Shreveport Aquarium. Experts believe Yoko's birth is due to parthenogenesis, a rare form of asexual reproduction.

Stock image of a swell shark Natalie Ruffing/iStock / Getty Images Plus. Aquarium staff have two hypotheses to explain the mysterious circumstances around young Yoko's birth. One possibility is ...