virgin shark birth mystery

Zebra shark at centre of 'virgin birth' mystery

A lone zebra shark in a Dubai aquarium has prompted scientific interest after laying eggs for the fourth year in a row which hatch into healthy offspring.Zebedee, who lives in the Burj aAl Arab hotel's aquarium, has never had access to a male shark but that has not stopped her producing numerous live offspring.
Philip Hampsheir reports from Dubai.

See video here: http://www.bbc.co.uk/news/science-environment-16420848

Which begs the question :Does there have to be a breeding family of lake creatures in order for lake creatures to exist as some claim? Maybe in isolation, a female is all that is needed.