Oceanography: The Geological, Chemical, Biological, and Physical. Essentials of Oceanography guides readers through the complexities of what lies beneath the ocean. With an interdisciplinary approach and accessible writing style, the text is engaging for all readers. The 12th Edition discusses the ocean's biological, chemical, geological, and physical components for an in-depth understanding of this vast and elaborate topic. Complex concepts are made engaging with extensively revised art and interactive study aids that keep readers interested and excited about the material.