Without light there would be no life in the sea‎.‎ Since the seas were the cradle for the evolution of all life forms‎,‎ the theme of this book is central to our understanding of the interaction between living organisms and their environments‎.‎ To express the breadth of research in this area‎,‎ leading experts in topics as diverse as satellite imagery and molecular biology have contributed to this collection of essays on light and life in the sea‎,‎ first published in 1990‎.‎ Intended for all with an interest in the marine environment‎,‎ this book aims to present the reader with a sampler of the exciting research that is underway and to provide an introduction to its broad compass‎.‎