Aquaculture is the science and technology of breeding and growing aquatic plants. Aquaculture has been in practice in China and India for more than 2000 years. However, the realisation of its role in meeting the world's food needs and of the need to develop it as an industry is more recent. Scientific aquaculture can ensure steady and regular protection of fish, which may be increased considerably with planned input of modern technology, similar to the case of scientific agriculture in relation to the production of land-based food crops. Aquaculture has therefore the potential of being the second largest means of food production next only to agriculture. This book presents various features of coastal aquacultural operations with emphasis on theoretical considerations in the planning and design of engineering structures.