Radiata refers to a classification in the animal kingdom, specifically within the phylum Cnidaria. This group includes organisms such as jellyfish, corals, and sea anemones. Radiata are characterized by their radial symmetry, meaning their body parts are arranged around a central axis, allowing them to interact with their environment from all directions. In addition to their unique body structure, Radiata possess specialized cells called cnidocytes, which contain stinging structures used for capturing prey and defense. These organisms are primarily aquatic and play essential roles in marine ecosystems, contributing to biodiversity and serving as important food sources for various species.