SEOUL: Shares in the South Korean studio behind the ultra-catchy Baby Shark - YouTube's most-viewed video - surged as much as 60 per cent on Tuesday (Nov 18) as the company made its market debut in Seoul. Beloved by young children, Baby Shark Dance has racked up more than 16 billion views on YouTube, roughly double the second-place clip Despacito. It was posted on the platform nearly a decade ago by The Pinkfong Company, which owns a portfolio of children's animation and educational franchises.