Despite all the potential nutritional, industrial, environmental, economic and employment benefits of seaweed aquaculture, seaweed productivity is declining in many areas of the world because of climate change impacts, resulting in more frequent seaweed disease outbreaks.  While biosecurity protocols to minimize the likely risk of introduction and spread of disease pathogens and pests are applied to the production of most aquatic fish and shrimp species, they are not generally applied to seaweed production. A research study in Malaysia has shown that basic biosecurity measures can help to significantly reduce the incidence of diseases such as ice–ice syndrome occurring in seaweed farms. Application of a basic seaweed biosecurity system is technically simple and, if appropriate extension and training materials or practical training are available, seaweed producers of any scale should be able to adopt one.