This ocean-themed set with spinning screws is for the littlest engineers. Hands-on construction and colorful friends in the underwater world offer a fun way to improve your fine motor skills. The large play pieces fit nicely onto the large screws and create endless building possibilities for play. The set encourages creativity and allows children to explore the relationship between cause and effect. Put the screws and colored parts in the right place on the game board, then turn the knob and watch everything come to life and start spinning.