Includes bibliographical references and index.

There is still so little we know about all that happens in the world's vast oceans. The dark depths beneath the waves are a mysterious realm scientists are still exploring. That means there's plenty of freaky creatures we don't yet understand or haven't yet seen, hiding in the blackness. Readers will delight in learning about otherworldly and ghastly sea animals, such as the prehistoric-looking frill shark and the fierce anglerfish. They'll even discover how the Titanic is being eaten by bacteria! Amazing color photographs of the underwater world and fact-filled sidebars further enhance this high-interest journey beneath the sea.