The spinal cord begins at the occipital bone and extends down to the space between the first and second lumbar vertebrae; it does not extend the entire length of the vertebral column.
Earthworms are invertebrates, lacking a skeleton. To support and shape the body, they are filled with coelomic fluid. Earthworms sometimes appear to have a belt or saddle around their bodies; this is a clitelum, a structure containing maturing eggs.
/ Body Colours One of the key features of an earthworm is the colour of its body. Some species of earthworms have a dark-red or red-violet body while other species are muddy-green. However, there are species that do not have these colours.