Introducing the Ocean...

From the smallest creatures in the world to the largest, animals of all sorts live in the vast oceans. The frigid waters of the polar seas, coral reefs of warm tropical seas, tidal pools and the great depths of the ocean provide homes to millions of animals. Many marine animals are at the mercy of human activity. The demand for seafood has led to overfishing sea creatures. In addition, spills of toxic materials and other forms of pollution have reduced the numbers of some ocean species.