The objective of this book is to give a general view of the different areas of oceanography and its applications. It is the study of oceans borrowing from varied fields like biology, physics, climatology, geology, etc. Different approaches, evaluations, methodologies and advanced studies on oceanography have been included in this book. It is a compilation of topics which include the major principles of oceanography along with its branches like biological oceanography, chemical oceanography, geological oceanography and physical oceanography, to name few. It aims to serve as a resource guide for students and experts alike and contribute to the growth of the discipline. A number of latest researches have been included to keep the readers up-to-date with the global concepts in this area of study.