Discover some of the ocean’s most fascinating creatures hiding in a brightly tinged coral reef, lurking on the murky sea floor, or frolicking among the surf and waves in a colorful introduction to underwater life. From angelfish and anemones to sea dragons, orcas, and giant squid, lift the flaps behind dozens of finned, flippered, and tentacled denizens of the deep for illustrated fun facts illuminating the mysteries and treasures found in this hidden world.