This book can be used by scuba divers and snorkellers as a quick reference guide to help them identify and learn the fish species that they will encounter underwater. The book covers all of the marine species found on the coral reefs around the world. Line drawings of fish families simplify identification underwater and general behaviour of the family along with interesting facts are listed.

Information includes the common family names, aliases, biological family names, size, identification, general information, feeding preferences and where the families occur around the globe.
Photographs of the most common of the species found when scuba diving or snorkelling are included and the fish families are organised for easy reference.