Provides an introduction to coral reef biology and ecology in a full colour identification guide to the better-known coral genera. It takes the reader into the tranquil underwater world of living coral colonies, brilliantly coloured fishes, sponges, algae, cowries and giant clams. This book recognises the fragility of the whole coral community in its exposure to danger, not only from adverse sea and weather conditions, but also from other inhabitants of the marine environment.