We first acknowledge the contribution of Prof. T.K Tseng, now deceased, who contributed to the Seaweed components of the first and second editions of this book, and whose legacy is reflected in this edition. Helen Lucas and Dawn Southgate assisted with editorial, administrative and support activities required for completion of this book and Dr. Kate Hutson assisted with editorial input to chapters other than her own. Many people have assisted the editors and authors of chapters with photographs, translations, information and opinions, and we express our sincere gratitude for their contributions. Finally, we express our sincere gratitude to all authors for their commitment, patience and enthusiasm for this project.