The oceans and seas are beautiful, and there is so much more to them that meets the eye! They are filled with fascinating sea creatures, like whales and narwhals, they're surrounded by beaches and swamps, and they have waves and tides. The ocean is even home to coral reefs--which are like colorful underwater forests that are home to many creatures. Readers dive into the underwater world of oceans and seas in this fact-filled guide, as full-color illustrations, fun activities, and engaging text encourage their curiosity and appreciation for an important part of the planet.