Earthworms (Lumbricina) are common terrestrial invertebrates of the order Annelida, known as ringed or segmented worms. They are decomposers and detritivores, and are important for the natural balance ...

But just why the humble earthworm is so good at enriching the soil has remained a mystery until now. The secret is a unique digestive system that relies on metabolite molecules dubbed ...

Explore earthworm anatomy and dissection in this 1961 educational film. Covering digestive, circulatory, excretory, nervous, ...