What happens in the ocean after dark? Use the magic flashlights on every page to reveal the hidden creatures in the ocean's depthsEach spread appears to be dark, but point the flashlight and watch brilliant aquatic life illustrations magically illuminate. Readers of all ages will be amazed by this innovative paper technology--no batteries necessaryEvery spread features a different underwater animal, but it's the reader's job to locate the hidden creatures. Perfect for curious older readers, each page has a ``Did you Know . . .?`` section filled with amazing facts about ocean creatures and their habits.