Yes & Know Invisible Ink Trivia Game Book: Sea Life Adventures

The original invisible ink activity books are back, and better than ever! 36-page book contains classic Yes & Know games, plus trivia, fun facts, puzzles and more, all about creatures that live in the sea. The Yes & Know pen features full-color Surprize Ink technology and "magically" reveals invisible clues and answers as you fill in the pages. Terrific for travel and rainy days, plus anyone who loves to learn about ocean life. For ages 7 and up.