With this magical puzzle, children will have fun discovering the mysteries of the ocean after dark. Once the puzzle is assembled, simply turn off the light and shine the included lamp on their creation to see the ocean’s nocturnal creatures appear. Plus, it comes with a poster! A fun 2-in-1 puzzle that develops curiosity and observation skills. Includes 1 puzzle, 1 lamp and 1 poster. The lamp works with 3 included LR41 batteries