Phylum Cnidaria

Phylum Cnidaria includes aquatic animals such as jellyfish, corals, and sea anemones. These creatures have soft, often tubular bodies with a central mouth surrounded by tentacles. The tentacles are equipped with specialized stinging cells called cnidocytes, which they use for capturing prey and defense. Cnidarians have a simple body structure with radial symmetry, meaning their body parts are arranged around a central axis. They can be free-swimming or fixed to surfaces and play important roles in marine ecosystems by providing habitats and participating in nutrient cycles.