This MasterPieces 18" x 24" 550pc Hidden Image Glow-in-the-Dark Puzzles features a beautiful underwater scene, full of dolphins, sea turtles, plant life, and hundreds of fish. Can you find all 12 sea creatures (fish don't count!)? Some glow-in-the-dark and others are hiding in plain sight! Artist, Steve Read hides amazing hidden images within each beautiful piece of art, and his puzzles never disappoint. Find all the secrets in these wildly entertaining puzzles! To reduce their impact on our environment, the chipboard used in these puzzles is made of recycled material.