Baby Shark - if you've heard of it, it’s probably been stuck in your head once or twice.
For those who haven’t though, it's the South Korean educational video that's become a massive worldwide phenomenon.
One of the stars of the clip is living right here in New Zealand.
Seven Sharp reporter Arrun Soma went to Masterton to meet 9-year-old Elaine Johnston - the girl the world knows as Baby Shark.
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