Earthworms are environmental indicators of soil health. Earthworms feed on the decaying matter in the soil and analyzing the contents of their digestive tracts gives insight into the overall condition of the soil.

Nov 5, 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 native …

Earthworms help to fertilise the soil by bringing nutrients closer to the surface. Earthworms are widespread in Britain and Europe. They have been introduced to most parts of the world. They live in …

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-like hair for …

Earthworms breakdown dead and decaying organic matter into rich humus soil, thereby supporting plant growth. They also dig tiny channels and make holes that aerate soil and improve drainage.

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 burrowing, which …

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

Slimy, slippery, pinkish, or salmon-colored earthworms are familiar to just about everyone. They are segmented worms with numerous concentric ridges, one for each body segment.

Earthworms, often unnoticed and undervalued, are essential architects of our ecosystem. These seemingly humble creatures play a pivotal role in enhancing soil fertility and maintaining the delicate …

Sep 5, 2013 · Earthworms are among the most visible of soil organisms and have received considerable attention. They play a pivotal role in maintaining the productivity of our soils. This makes …