The children's song 'Baby Shark' has entered the US music charts.
The catchy tune from South Korea's Pinkfong is in the Billboard charts at number 32.
It's also currently at number 22 in the official Irish chart, compiled by IRMA, for the week ending January 4th.
It gained its most recent popularity after the video went viral in Indonesia, and then spread to other countries.
The 'Baby Shark Challenge' can also find people singing along while making shark-shaped hand motions.
The video has 1.9 billion global views, doo doo doo doo doo doo...