Echinodermata

Echinodermata are a phylum of marine invertebrates (animals without a backbone). They are characterized by their hard external skeletons and radial symmetry. Echinoderms have remarkable regeneration and developmental abilities, which makes them extremely important for scientific research. Examples of species include starfish, sea urchins, and sea cucumbers. Echinoderms are also essential components of marine ecosystems, providing food for many other species. They can help to protect coastal areas by filtering water, breaking down plant and animal matter, and providing habitats for other organisms. Their presence is also important in coral reef systems and they are vital to the deep-sea environment due to their ability to absorb toxic chemicals and pollutants.