Does the subject want to ask, "What is the song of the little shark sleeping?" This is a song. The shark is sleeping. According to QQ music query, the lyrics of the song "Shark Family Sleep, Shark Baby, DuDu DuDu, Shark Baby, DuDu DuDu, Sleep, DuDu DuDu, Close Your Eyes". It's an original nursery rhyme of Baby Bus, released on September 28th, 20021year.