An earthworm is a soil -dwelling terrestrial invertebrate that belongs to the phylum Annelida. The term is the common name for the largest members of the class (or subclass, depending on the …

Dec 20, 2025 · Earthworm, any one of more than 1,800 species of terrestrial worms of the class Oligochaeta (phylum Annelida)—in particular, members of the genus Lumbricus. Seventeen …

Earthworms are harmless, often beneficial residents of the soil. Earthworms breakdown dead and decaying organic matter into rich humus soil, thereby supporting plant growth. They also dig …

Oct 31, 2025 · Earthworms are a group of terrestrial annelids that constitute the suborder Lumbricina. They are characterized by an elongated, segmented body equipped with bristle …

Learn all you wanted to know about common earthworms with pictures, videos, photos, facts, and news from National Geographic.

Sep 1, 2025 · Earthworms, recognized as keystone species and ecosystem engineers, constitute the largest portion of animal biomass in soils and serve as vital indicators within the soil quality …

Earthworm is the common name for the larger terrestrial invertebrates of the Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida (segmented worms).

May 8, 2025 · An earthworm is a terrestrial annelid invertebrate that belongs to the Lumbricidae family. Earthworms derive their name from where they live (earth). They are adaptable to any …

Earthworms are more than just fish bait. They are the main contributors to enriching and improving soil for plants, animals and even humans. Earthworms create tunnels in the soil by …

Earthworms are distinguished from other groups of Oligochaeta by their ecology. Earthworms are predominantly terrestrial, though they can be found in some freshwater environments such …