Introduction

The first thought which comes to mind when people hear the word “bacteria” is germs - a micro-organism, especially one that produces diseases in animals and plants. In fact, these “bacteria”, such as cyanobacteria , make it possible for Earth to sustain life.

Cyanobacteria, also known as blue-green algae or pond scum, lives in aquatic environments and are photosynthetic; manufacturing their own food. Without struggle, cyanobacteria existed since 3.5 billion years ago, distinguished as being one of the oldest known fossils. Surviving as one of Earth’s important group of bacteria, cyanobacteria contribute a lot to the survival of organisms. 

Other common types of cyanobacteria include spirulina, oscillatoria, anabaena, and nostoc.