**2.4 Cyanobacterial toxins**

Cyanobacteria create a variety of toxic secondary metabolites that are detrimental to a variety of other organisms. Scientists feel that these pollutants are currently posing a serious threat to society's health in numerous parts of the world. The toxins

produced by cyanobacteria and the species that produce them are listed in **Table 1**. Toxins produced by cyanobacteria are divided into two categories: cytotoxins and biotoxins [7]. The varieties of algal toxins produced by various blue-green algae, as well as their impacts, are listed in **Table 1**.
