Zebra shark at centre of 'virgin birth' mystery

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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.

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