Ocean optics refers to the study of the interaction sunlight with water and the substances found in water. The research in this area includes the study of sea, lakes, coastal waters, rivers, large ocean basins, and inland waters. Knowledge of ocean optics is required in aquatic remote sensing research for comprehending the information which can be derived from the color of the water, as seen by satellite sensors in space. Ocean optics has been used to investigate topics such as zooplanktons, warming of the upper ocean, and shallow-water habitats (such as coral reefs and seagrass beds). Furthermore, it is applied to study the ocean biological pump as well as marine biogeochemistry. It also uses optical tools for measuring the size spectrum of particles in the ocean. This book contains some path-breaking studies on various topics related to ocean optics. It consists of contributions made by international experts. Students, researchers, experts, and all associated with the study of this field will benefit alike from this book.