"JUVENILE NONFICTION Science & Nature Biology." . . "JUVENILE NONFICTION / Science & Nature / Earth Sciences / Water (Oceans, Lakes, etc.)" . . . . . . . . . . . . . . "Explore one of Earth's last frontiers: deep oceans! Learn about the freezing temperatures, dangerous wildlife and intense pressure that make deep oceans difficult to explore.--Cover."@en . . . . "Deep oceans"@en . "Deep Oceans"@en . "Deep Oceans" . "Deep oceans" . . "Op de bodem van de oceaan" . . . . "Electronic books"@en . "Read this book to learn about one of Earth's last frontiers: deep oceans. Learn about the cold and dark depths of the ocean, where scientists find extreme landforms and unusual living things."@en . . "Juvenile works"@en . "Juvenile works" .