Who's Hiding? by Christiane Gunzi

From chapters.ca:
All of the delightful board books for baby feature brilliant color photo illustrations with flaps to lift and friendly creatures hiding behind each of them. The books present five two- page spreads with a "Who's hiding?" question on each left- hand page and a flap hiding various animals on the right- hand page. Babies will be amused as they turn from one spread to the next - until they find a surprise on the very last spread. When they lift that final flap they uncover a mirror that shows them their own smiling face! In this book, a fish hides behind seaweed, gulls hide behind a beach hut, starfish hide behind a beach ball, and hermit crabs hide behind a sand castle.