Marine biology is the scientific study of marine life, organisms in the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies species based on the environment rather than on taxonomy.

In the present book, fifteen typical literatures about marine biology published on international authoritative journals were selected to introduce the worldwide newest progress, which contains reviews or original researches on marine life, microscopic life, invertebrates, marine habitats, intertidal and near shore, deep sea and trenches, etc. We hope this book can demonstrate advances in marine biology as well as give references to the researchers, students and other related people.