Spirochetes are a group of bacteria characterized by their unique spiral shape and flexible structure. They are known for their ability to move in a corkscrew motion, which helps them navigate through various environments, including soil and water. Some spirochetes are harmless, while others can cause diseases in humans and animals. One well-known disease caused by spirochetes is Lyme disease, which is transmitted through the bite of infected ticks. Another example is syphilis, a sexually transmitted infection caused by the spirochete Treponema pallidum. These bacteria play important roles in both health and disease.