Incredibly rich and realistic illustrations take readers up close to the curious creatures and plants that thrive in the vast severe habitat of the ocean's floor. Marine biologist and renowned children's book writer Sneed B. Collard III introduces children to many fascinating sea creatures–from bioluminescent fish to giant tube worms–that survive without sunlight. A history of deep-sea exploration from sonar to submersibles shows how far scientists have come in their ability to investigate these great depths. Inspire young readers to explore the possibilities of marine science.