Annelids: Lumbricus, Earthworm


Earthworms burrow in soil feeding and processing through their gut. This brings leaf debris and its nutrients into the soil, benefiting many organisms.

Next Generation Science Standards for this Video

Earthworms are adapted for digging and feeding in the dirt. They squeeze their circular muscles to dig.  As they eat they process food through their one-way gut and poop into the soil.

Though annelids originally evolved in the ocean, when there was sufficient food available on land, the earthworm became an important part of the terrestrial ecosystem.

Earthworms extend from their burrows to feed on decaying leaves and other debris, thus recycling nutrients.