The study of distribution of plants and animals is called biogeography which is a branch of biology. Aquatic biogeography is defined as the study of aquatic ecosystem spatially distributed across globe. This book covers in detail some existent theories and innovative concepts revolving around aquatic biogeography. It aims to provide to its readers a wide variety of topics dealing with aquatic biogeography and its various aspects which are innovative and important. There has been rapid progress in this field and its applications are finding their way across multiple industries. The book is appropriate for students seeking detailed information in this area as well as for experts. It attempts to assist those with a goal of delving into the field of aquatic biogeography.