Giant viruses are a unique group of viruses that are significantly larger than typical viruses, often exceeding 200 nanometers in size. They possess complex structures and can contain a large number of genes, sometimes more than some bacteria. These viruses can infect various organisms, including amoebas, and are often studied for their unusual characteristics and evolutionary significance. One of the most well-known giant viruses is Mimivirus, which was discovered in 2003. Giant viruses challenge traditional definitions of viruses and have sparked interest in the field of virology, leading researchers to explore their role in ecosystems and their potential impact on human health.