If you doo doo doo not know Baby Shark, you're missing the boat! Fit Mommy Shark, Daddy Shark, Grandma Shark, Grandpa Shark or Baby Shark into their puzzle board space and trigger their line from the Baby Shark Song. This Baby Shark Chunky Wood Sound Puzzle provides a fun, engaging way for children to learn shape and sound recognition. Best of all, they get to hear the song they love over and over again. Requires 2 x AAA batteries (not included).