The Common Earthworm (Lumbricus terrestris) is a terrestrial (land) invertebrate (without a backbone) in the Lumbricidae family of earthworms. It is also known as the Lob Worm.
The Common Earthworm is pinkish-greyish-purple. The body is cylindrical and a tube-in-a-tube, with a series of segments, called metamerisms. The last segment is the tail, and the first segment has the mouth and prostomium (flat paddle-shaped lobe). Each segment has bristle-like hairs called lateral setae. These hairs help it to move by gripping the surface of the soil. It has pores (holes) in its body that enables it to breathe. It exudes a fluid that keeps the body moist and stops it from drying out.
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