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 author) …

Apr 25, 2026 · What are earthworms. Where & how long do they live. What & how do they eat. How do they move. Learn their taxonomy, organ system, reproduction & life cycle with pictures.

The most common earthworm, the red wiggler, can live between one to five years. A nematode named Caenorhabditis elegans is a popular worm used in studies because of its 25 day lifespan. What …

14. Earthworms engineer the soil Earthworm burrows mix soil horizons, aerate the substrate and convert complex organic matter into nutrient-rich poops that sit on the soil surface and are readily available to …

May 12, 2026 · 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 …

The earthworm has a closed circulatory system. An earthworm circulates blood exclusively through vessels. There are three main vessels that supply the blood to organs within the earthworm. These …

Apr 15, 2026 · EarthWorms (Lumbricus terrestris) Earth Worm Characteristics Earthworms are made up of many small segments known as ‘annuli’. These annuli are ridged and covered in minute hairs that …

Although native to Europe, earthworms are found throughout North America and western Asia. They do not live in deserts or regions where there is permafrost or permanent snow and ice. Typically only a …

Nov 10, 2025 · An earthworm’s diet doesn’t just keep it alive — it also enriches the environment. The organic materials they process become humus, improving soil aeration and fertility. Their activity …

Oct 24, 2024 · What is an earthworm? In this video for kids, you'll discover that earthworms are small, tube-shaped animals that live in the ground. They have long, soft bo...