“Baby Shark,” the wildly popular children’s YouTube video that dives into a song about sharks, landed on the Billboard Hot 100 chart this week.
The video kicked off by taking the viewer beneath the ocean’s surface before a boy appeared to sing “Baby shark, doo doo doo doo doo doo.” The song’s lyrics continued in a similar way, changing the words to other family members like “Mommy shark” and “Grandpa shark.”
The tune was initially shared online in 2015 by South Korean company SmartStudy, which has created kid-friendly clips under Pinkfong’s umbrella, The New York Times said. After reportedly undergoing a remix, it was shared again in June 2016.
It gained popularity in the U.S. last year following the onset of a social media challenge which encouraged listeners to record themselves busting a move to it.