Spirilla (genus of bacteria)

Spirilla are a genus of bacteria known for their spiral or corkscrew shape. They belong to the group of prokaryotes, which means they are single-celled organisms without a nucleus. Spirilla are often found in aquatic environments and can play roles in nutrient cycles. Some species are known to be involved in processes such as nitrogen fixation, which helps convert atmospheric nitrogen into a usable form for plants. While most spirilla are harmless or beneficial, certain types can cause disease in humans and animals. Understanding these bacteria contributes to our knowledge of ecology and microbiology.