Marine biotoxins, more or less complex molecules with various origins that can accumulate in the tissues of fish products through the food chain, are reviewed. 

The EU, aware of the danger incurred in eating certain fish products, has issued a set of hygiene and health directives for the purpose of preventing disease and safeguarding consumer health.  

Giorgio Smaldone. Biotossine algali e gravi rischi da molluschi per salute umana.