Marine life individuals per square meter and accounting for about 80% of all individual animals on earth, their diversity of life cycles, and their presence at various trophic levels point at an important role in many ecosystems. Echinoderms (Greek for "spiny skin") is a phylum which contains only marine invertebrates. The adults are recognizable by their radial symmetry (usually five-point) and include starfish, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies. Echinoderms are found at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7000 living species, making it the second-largest
Fiery spiny mouse Fiery spiny mouse The fiery spiny mouse ("Acomys ignitus") is a species of rodent in the family Muridae found in Kenya and Tanzania. Its natural habitats are dry savanna and rocky areas. It may be found as a commensal in human habitations. While most spiny mice are small in size, the fiery spiny mouse ("A. ignitus") is slightly larger, measuring at approximately 10 cm in length. The species gets its name from the hair on their coats that are connected in groups. These groups of hair are stiff guard hairs, resembling tiny quills and they are able to separate from