Marine biology, zoology and ecology are sub-disciplines of biology. Marine biology is the study of marine life on Earth and strives to categorize organisms as per their functions. Marine zoology, on the other hand, is the science concerned with the study of all aspects of the marine animal kingdom and the interactions between the species within this kingdom. The study of the relations of marine organisms with their surroundings is called marine ecology. The aim of this book is to provide information about the theories and techniques central to these fields while also shedding light on the theoretical advancements achieved in the scientific research. It also delves into upcoming concepts and theories that are associated with these three disciplines in comprehensive detail. This book, with its in-depth analyses and data, will prove immensely beneficial to professionals and students involved in this area at various levels.