This second edition provides an overview of the expanding scope of the field from several perspectives. Incorporating pharmacology, toxicology, chemistry, ecology, and economics, it covers several categories of toxins by function and biomechanism, potential pharmacological applications, and legal and economic perspectives. New toxins such as pfiestra, gambierol, and polycavernoside are described by their individual chemical structure, ecobiology, metabolism, detection methods, determination, pharmacology, and toxicology. Logically organized for clear understanding, this edition includes more information on the biological aspects of the bloom, the effects and actions of each toxin with emphasis on human response, detection and analysis, and food safety issues such as regulation and international trade implications.