Cnidaria is a diverse group of aquatic animals that includes creatures like jellyfish, coral, and sea anemones. They are known for their unique stinging cells called cnidocytes, which help them capture prey and defend against predators. Cnidarians typically have a simple body structure, featuring a central cavity surrounded by tentacles. They can be found in various marine environments, from shallow reefs to deep ocean waters. These animals exhibit two main body forms: the polyp, which is stationary and often attached to surfaces, and the medusa, which is free-swimming and bell-shaped. Cnidarians play a crucial role in marine ecosystems, providing habitat and food for many other species. Their beautiful colors and intricate forms make them fascinating subjects for study